690
FXUS64 KLUB 212307
AFDLUB
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LUBBOCK TX
607 PM CDT TUE MAY 21 2013
.AVIATION...
VFR CONDITIONS EXPECTED THROUGH THE PERIOD. LIGHT NORTH WINDS TO
BECOME SOUTHERLY THIS EVENING THEN INCREASE TOWARDS 15 KTS BY
MIDDAY WEDNESDAY.
&&
.PREV DISCUSSION... /ISSUED 404 PM CDT TUE MAY 21 2013/
SHORT TERM...
LARGE-SCALE ASCENT ASSOCIATED WITH A 60-70 KT ULJ ON THE SRN FLANK
OF A SHORTWAVE TROUGH MOVING ACROSS THE PANHANDLES IS MAINTAINING
SOME MODEST CONVECTION ACROSS THE SRN PANHANDLE AND ROLLING PLAINS
THIS MID-AFTERNOON. INSTABILITY IS VERY MEAGER...SBCAPES UNDER 200
J/KG...SO WE BARELY EXPECT THUNDER WITH THIS ACTIVITY. HOWEVER...A
MID-LVL COLD POCKET ROTATING SWD AROUND THE WRN FLANK OF THE TROUGH
IS INCREASING MID-LVL INSTABILITY ACROSS NE NM AND THE WRN
PANHANDLES WITH SBCAPES ANALYZED TO AROUND 500 J/KG. THIS AREA WILL
PROGRESS SEWD TOWARD THE FA LATE THIS AFTERNOON AND EVENING AND AS A
RESULT WE COULD SEE ANOTHER BATCH OF SHOWERS/TSTMS DEVELOP AND MOVE
SEWD TOWARD MAINLY OUR NRN ZONES. LIMITED MOISTURE SHOULD KEEP THE
ACTIVITY ISOLATED TO WIDELY SCATTERED. AN ISOLD STRONG STORM WITH
SMALL HAIL IS NOT OUT OF THE QUESTION UNTIL THE BOUNDARY LAYER
BEGINS TO STABILIZE AROUND SUNSET. SFC RIDGING WILL BRING LIGHT
WINDS OVERNIGHT WITH SEASONABLY COOL TEMPS. THEN FOR WEDNESDAY...A
RETURN TO SRLY WINDS AND AN UPPER RIDGE APPROACHING FROM THE WEST
SHOULD RESULT IN WARMER TEMPS...RIGHT AROUND 90F EXPECTED FOR MANY
LOCATIONS. SHALLOW MOISTURE WILL MIX OUT ACROSS THE CAPROCK.
MOISTURE WILL LIKELY BE SUFFICIENTLY DEEP TO GENERATE SOME POTENTIAL
INSTABILITY IN THE ROLLING PLAINS...BUT THE ATMOSPHERE IS EXPECTED
TO REMAIN CAPPED WITH BUILDING HEIGHTS ALOFT.
LONG TERM...
INITIALLY PROGRESSIVE FLOW REGIME WILL TREND MORE BLOCKY LATER
THIS WEEK IN RESPONSE TO LONGWAVE RIDGING EMERGING FROM THE
CENTRAL GREAT PLAINS ALL THE WAY NORTH TO THE OIL SANDS OF FORT
MCMURRAY, ALBERTA. FORTUNATELY...THE SOUTH PLAINS OF TEXAS WILL
FALL UNDER THE SUBTROPICAL JET RESIDING SOUTH OF THE REGION OF
STRONG HEIGHT RISES. THIS RIDGE WILL EDGE SLOWLY EASTWARD THROUGH
THE HOLIDAY WEEKEND SUBJECTING THE CWA TO SOUTHWEST UPPER FLOW
DOWNSTREAM OF A SEMI-STATIONARY TROUGH OVER THE WESTERN CONUS.
UPSHOT OF THIS IS AN INCREASINGLY ACTIVE PATTERN FOR OUR DOMAIN
BEGINNING THURSDAY BEFORE THE MEAN DRYLINE BECOMES SITUATED WEST
OF THE 100TH MERIDIAN THEREAFTER...ULTIMATELY GIVING OUR FRIENDS
IN OKLAHOMA A MUCH-NEEDED BREAK FROM THEIR RECENT RASH OF SEVERE
WEATHER.
BIGGEST FORECAST CHALLENGE FOR THE NEXT WEEK IS THIS THURSDAY AND
CONCERNS THE THREAT FOR SIGNIFICANT SEVERE CONVECTION. DESPITE THE
500MB RIDGE AXIS DIRECTLY OVER THE SOUTH PLAINS...THIS AREA IS
UNDER A RELATIVE WEAKNESS IN THE RIDGE AS THE SUBTROPICAL JET WILL
BE OVER THE REGION. AMPLE MOISTURE CURRENTLY IN CENTRAL TX WILL BE
CHANNELED WEST-NORTHWEST WED AFTERNOON AND OVERNIGHT LEADING TO
RICH PWATS BY THURSDAY AHEAD OF A DRYLINE AND CRUCIAL FRONTAL
BOUNDARY PROGGED TO BACKDOOR SLOWLY ACROSS THE TX PANHANDLE. HAVE
KEPT TIMING OF THIS FRONT ON TRACK WITH EARLIER FORECASTS FAVORING
STRONG LL CONVERGENCE OVER OUR N-NERN COUNTIES BY PEAK HEATING.
FORECAST SOUNDINGS ARE NOTHING SHORT OF IMPRESSIVE FOR ORGANIZED
SEVERE MODES INCLUDING SUPERCELLS. LOCATION OF THE FRONT WILL
PROVE CRITICAL FOR A TORNADIC THREAT AS 0-3KM HELICITIES NEAR THIS
BOUNDARY ARE SHOWN TO REACH IN EXCESS OF 300 M2/S2. DID ADD SEVERE
MENTION AND LOCALLY HEAVY RAIN LATE THURSDAY FOR THE NERN QUARTER
OF OUR CWA NEAR THIS BOUNDARY WHERE STRONG CAPE AND PWATS AOA ONE
INCH APPEAR LIKELY.
THEREAFTER...GULF MOISTURE WILL REMAIN INTACT OVER MUCH OF THE CWA
WITHIN SUSTAINED S-SELY 850MB FLOW. DAILY DRYLINE POSITION THROUGH
AT LEAST EARLY NEXT WEEK FAVORS THE NM STATE LINE AREA WITH
PERHAPS DAILY CHANCES FOR TSTORMS...BUT FOR NOW HAVE ENDED MENTION
AFTER SUNDAY NIGHT GIVEN THIS IS OVER FIVE DAYS OUT. HOWEVER...THE
UPPER FLOW DOES MAINTAIN A FAVORABLY UNSETTLED SWLY MID-LEVEL
FLOW THAT COULD CERTAINLY WARRANT DAILY DRYLINE STORMS. BARRING
CONVECTIVE DEBRIS...TEMPS LOOK TO HOLD WITHIN 5 DEGS OR SO OF
SEASONABLE AVERAGES THROUGH THE PERIOD.
&&
.PRELIMINARY POINT TEMPS/POPS...
FRIONA 50 87 57 87 58 / 10 0 10 20 30
TULIA 53 88 59 87 61 / 10 0 10 30 30
PLAINVIEW 53 88 61 88 63 / 10 0 10 30 40
LEVELLAND 53 90 63 90 63 / 0 0 10 20 30
LUBBOCK 55 90 64 90 65 / 10 0 10 20 40
DENVER CITY 54 90 64 94 64 / 0 0 10 20 20
BROWNFIELD 54 92 65 91 64 / 0 0 10 20 20
CHILDRESS 55 90 63 89 64 / 10 10 10 50 50
SPUR 55 90 63 91 66 / 0 10 10 20 40
ASPERMONT 58 93 67 93 68 / 10 10 10 20 40
&&
.LUB WATCHES/WARNINGS/ADVISORIES...
NONE.
&&
$$
07
528
FXUS64 KLUB 212104
AFDLUB
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LUBBOCK TX
404 PM CDT TUE MAY 21 2013
.SHORT TERM...
LARGE-SCALE ASCENT ASSOCIATED WITH A 60-70 KT ULJ ON THE SRN FLANK
OF A SHORTWAVE TROUGH MOVING ACROSS THE PANHANDLES IS MAINTAINING
SOME MODEST CONVECTION ACROSS THE SRN PANHANDLE AND ROLLING PLAINS
THIS MID-AFTERNOON. INSTABILITY IS VERY MEAGER...SBCAPES UNDER 200
J/KG...SO WE BARELY EXPECT THUNDER WITH THIS ACTIVITY. HOWEVER...A
MID-LVL COLD POCKET ROTATING SWD AROUND THE WRN FLANK OF THE TROUGH
IS INCREASING MID-LVL INSTABILITY ACROSS NE NM AND THE WRN
PANHANDLES WITH SBCAPES ANALYZED TO AROUND 500 J/KG. THIS AREA WILL
PROGRESS SEWD TOWARD THE FA LATE THIS AFTERNOON AND EVENING AND AS A
RESULT WE COULD SEE ANOTHER BATCH OF SHOWERS/TSTMS DEVELOP AND MOVE
SEWD TOWARD MAINLY OUR NRN ZONES. LIMITED MOISTURE SHOULD KEEP THE
ACTIVITY ISOLATED TO WIDELY SCATTERED. AN ISOLD STRONG STORM WITH
SMALL HAIL IS NOT OUT OF THE QUESTION UNTIL THE BOUNDARY LAYER
BEGINS TO STABILIZE AROUND SUNSET. SFC RIDGING WILL BRING LIGHT
WINDS OVERNIGHT WITH SEASONABLY COOL TEMPS. THEN FOR WEDNESDAY...A
RETURN TO SRLY WINDS AND AN UPPER RIDGE APPROACHING FROM THE WEST
SHOULD RESULT IN WARMER TEMPS...RIGHT AROUND 90F EXPECTED FOR MANY
LOCATIONS. SHALLOW MOISTURE WILL MIX OUT ACROSS THE CAPROCK.
MOISTURE WILL LIKELY BE SUFFICIENTLY DEEP TO GENERATE SOME POTENTIAL
INSTABILITY IN THE ROLLING PLAINS...BUT THE ATMOSPHERE IS EXPECTED
TO REMAIN CAPPED WITH BUILDING HEIGHTS ALOFT.
&&
.LONG TERM...
INITIALLY PROGRESSIVE FLOW REGIME WILL TREND MORE BLOCKY LATER
THIS WEEK IN RESPONSE TO LONGWAVE RIDGING EMERGING FROM THE
CENTRAL GREAT PLAINS ALL THE WAY NORTH TO THE OIL SANDS OF FORT
MCMURRAY, ALBERTA. FORTUNATELY...THE SOUTH PLAINS OF TEXAS WILL
FALL UNDER THE SUBTROPICAL JET RESIDING SOUTH OF THE REGION OF
STRONG HEIGHT RISES. THIS RIDGE WILL EDGE SLOWLY EASTWARD THROUGH
THE HOLIDAY WEEKEND SUBJECTING THE CWA TO SOUTHWEST UPPER FLOW
DOWNSTREAM OF A SEMI-STATIONARY TROUGH OVER THE WESTERN CONUS.
UPSHOT OF THIS IS AN INCREASINGLY ACTIVE PATTERN FOR OUR DOMAIN
BEGINNING THURSDAY BEFORE THE MEAN DRYLINE BECOMES SITUATED WEST
OF THE 100TH MERIDIAN THEREAFTER...ULTIMATELY GIVING OUR FRIENDS
IN OKLAHOMA A MUCH-NEEDED BREAK FROM THEIR RECENT RASH OF SEVERE
WEATHER.
BIGGEST FORECAST CHALLENGE FOR THE NEXT WEEK IS THIS THURSDAY AND
CONCERNS THE THREAT FOR SIGNIFICANT SEVERE CONVECTION. DESPITE THE
500MB RIDGE AXIS DIRECTLY OVER THE SOUTH PLAINS...THIS AREA IS
UNDER A RELATIVE WEAKNESS IN THE RIDGE AS THE SUBTROPICAL JET WILL
BE OVER THE REGION. AMPLE MOISTURE CURRENTLY IN CENTRAL TX WILL BE
CHANNELED WEST-NORTHWEST WED AFTERNOON AND OVERNIGHT LEADING TO
RICH PWATS BY THURSDAY AHEAD OF A DRYLINE AND CRUCIAL FRONTAL
BOUNDARY PROGGED TO BACKDOOR SLOWLY ACROSS THE TX PANHANDLE. HAVE
KEPT TIMING OF THIS FRONT ON TRACK WITH EARLIER FORECASTS FAVORING
STRONG LL CONVERGENCE OVER OUR N-NERN COUNTIES BY PEAK HEATING.
FORECAST SOUNDINGS ARE NOTHING SHORT OF IMPRESSIVE FOR ORGANIZED
SEVERE MODES INCLUDING SUPERCELLS. LOCATION OF THE FRONT WILL
PROVE CRITICAL FOR A TORNADIC THREAT AS 0-3KM HELICITIES NEAR THIS
BOUNDARY ARE SHOWN TO REACH IN EXCESS OF 300 M2/S2. DID ADD SEVERE
MENTION AND LOCALLY HEAVY RAIN LATE THURSDAY FOR THE NERN QUARTER
OF OUR CWA NEAR THIS BOUNDARY WHERE STRONG CAPE AND PWATS AOA ONE
INCH APPEAR LIKELY.
THEREAFTER...GULF MOISTURE WILL REMAIN INTACT OVER MUCH OF THE CWA
WITHIN SUSTAINED S-SELY 850MB FLOW. DAILY DRYLINE POSITION THROUGH
AT LEAST EARLY NEXT WEEK FAVORS THE NM STATE LINE AREA WITH
PERHAPS DAILY CHANCES FOR TSTORMS...BUT FOR NOW HAVE ENDED MENTION
AFTER SUNDAY NIGHT GIVEN THIS IS OVER FIVE DAYS OUT. HOWEVER...THE
UPPER FLOW DOES MAINTAIN A FAVORABLY UNSETTLED SWLY MID-LEVEL
FLOW THAT COULD CERTAINLY WARRANT DAILY DRYLINE STORMS. BARRING
CONVECTIVE DEBRIS...TEMPS LOOK TO HOLD WITHIN 5 DEGS OR SO OF
SEASONABLE AVERAGES THROUGH THE PERIOD.
&&
.PRELIMINARY POINT TEMPS/POPS...
FRIONA 50 87 57 87 58 / 10 0 10 20 30
TULIA 53 88 59 87 61 / 10 0 10 30 30
PLAINVIEW 53 88 61 88 63 / 10 0 10 30 40
LEVELLAND 53 90 63 90 63 / 0 0 10 20 30
LUBBOCK 55 90 64 90 65 / 10 0 10 20 40
DENVER CITY 54 90 64 94 64 / 0 0 10 20 20
BROWNFIELD 54 92 65 91 64 / 0 0 10 20 20
CHILDRESS 55 90 63 89 64 / 10 10 10 50 50
SPUR 55 90 63 91 66 / 0 10 10 20 40
ASPERMONT 58 93 67 93 68 / 10 10 10 20 40
&&
.LUB WATCHES/WARNINGS/ADVISORIES...
NONE.
&&
$$
33/93
666
FXUS64 KLUB 211824
AFDLUB
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LUBBOCK TX
124 PM CDT TUE MAY 21 2013
.AVIATION...
BREEZY NORTH WINDS WILL DIMINISH THIS AFTERNOON...BECOMING LIGHT
AND VARIABLE BY EVENING. THERE IS THE POSSIBILITY FOR LIGHT FOG EARLY
WED MORNING AT EITHER TERMINAL...BUT WE PULLED MENTION AT KCDS
DUE TO VERY LOW CONFIDENCE. SRLY WINDS WILL RETURN ON WED
MORNING...INCREASING BY AFTERNOON.
&&
.PREV DISCUSSION... /ISSUED 638 AM CDT TUE MAY 21 2013/
UPDATE...
HAVE INCREASED POPS ACROSS THE NORTH GIVEN CONVECTIVE TREND AHEAD
OF SMALL BUT INTENSE UPPER LEVEL STORM SYSTEM ACROSS NEW MEXICO.
AVIATION...
PERIOD OF MVFR THIS MORNING WILL GIVE WAY TO VFR CONDITIONS AFTER
STORM SYSTEM ASSOCIATED WITH AN INTENSE BUT SMALL UPPER LEVEL LOW
ACROSS EASTERN NEW MEXICO. THERE EXISTS A SMALL OPPORTUNITY FOR
TSTMS TO AFFECT KLBB /FM 12-15Z/ AND CDS /13-16Z/ THOUGH
CONFIDENCE IS INSUFFICIENT TO INSERT IN TAF ATTM. NORTHERLY WINDS
WILL DIMINISH AS THE UPPER LEVEL SYSTEM PASSES. FINALLY...BR/FG
MAY BE POSSIBLE LATE TONIGHT AT BOTH TERMINALS.
PREV DISCUSSION... /ISSUED 445 AM CDT TUE MAY 21 2013/
SHORT TERM...
PRIMARY WEATHER FEATURE AFFECTING THE COUNTRY/S SENSIBLE WEATHER
CONTINUES TO BE THE MATURE LOW PRESSURE SYSTEM ACROSS THE DAKOTAS.
A TROUGH AXIS EXTENDS FROM THIS LOW INTO EASTERN NEW MEXICO EARLY
THIS MORNING WHICH HAS RESULTED IN SOME HIGH BASED RADAR ECHOES TO
OUR NORTH. AS THE TROUGH SWINGS THROUGH WEST TEXAS AROUND MID
DAY...UPPER LEVEL FLOW WILL QUICKLY TRANSITION TO NORTHWESTERLY AS
LARGE SCALE RIDGE BEGINS TO DEVELOP FROM THE DESERT SOUTHWEST INTO
CANADA. THIS WILL BECOME AN INCREASINGLY SIGNIFICANT PLAYER IN THE
EXTENDED FORECAST AS YET ANOTHER STRONG LOW COMES ASHORE THE PACIFIC
NORTHWEST.
WATER VAPOR IMAGERY DEPICTS AN AREA OF ENHANCED LIFT ACROSS
NORTHEASTERN NEW MEXICO AS THE AFOREMENTIONED TROUGH AXIS MAKES ITS
ATTEMPT TO DEEPEN. AS MODEL GUIDANCE AND ACARS PLOTS CONTINUE TO
SHOW ENHANCED WIND FIELD ON THE WESTERN PERIPHERY OF THIS
TROUGH...ALL INDICATIONS CONTINUE TO POINT TOWARD A STRENGTHENING
TREND AS IT SWINGS ACROSS THE REGION BECOMING MORE NEGATIVELY TILTED
WITH TIME. THIS IN TURN HAS ALREADY DRIVEN A SURFACE COLD FRONT
THROUGH THE ENTIRE CWFA WITH INCREASING MOISTURE IN ITS WAKE. THIS
WILL PLACE MUCH OF THE AREA WITHIN LIFT REGION AROUND SUNRISE. THE
REAL QUESTION WILL BE IF CONVECTIVE INITIATION WILL OCCUR LATER THIS
MORNING. THERE APPEARS TO BE A NEARLY STATION MESOSCALE CONVECTIVE
VORTEX ACROSS WESTERN QUAY COUNTY NM WITH ENHANCEMENT IN THE
VICINITY. AS THIS BEGINS TO KICK OUT OVER THE NEXT FEW HOURS...SOME
TSTM ACTIVITY WILL BE POSSIBLE...MAINLY OVER THE NORTHERN HALF OF
THE REGION. AT PRESENT NLDN DATA IS NOT AVAILABLE DUE TO AN OUTAGE
AND NO SFERIC ACTIVITY HAS BEEN DETECTED BY THE TTU LMA. IF IT CAN
BECOME ESTABLISHED...WOULD EXPECT ACTIVITY TO REMAIN ELEVATED WITH
THE COOLER/MORE MOIST AIR BEHIND THE FRONT HELPING TO MITIGATE THE
DOWNBURST THREAT. WE MAY SEE SOME LIGHT ACTIVITY ACROSS THE
SOUTHWEST LATER THIS MORNING AS A LEAD IMPULSE OVERSPREADS REGION
OF LOW LEVEL MOISTURE CONVERGENCE. OTHERWISE...DESPITE SOME
RESIDUAL CLOUDINESS...IT WILL BE REFRESHINGLY COOL TODAY AS
COMPARED TO MUCH OF THE LAST WEEK.
LONG TERM...
BLOCKING RIDGE WILL SET UP ACROSS THE NATION/S MIDSECTION WITH UPPER
LOWS LOCATED ACROSS EITHER COAST. AFTER DEEP MIXING BEHIND A ROLLING
PLAINS/BIG COUNTRY DESTINED DRYLINE WEDNESDAY...MOISTURE WILL RETURN
TO THE SOUTH PLAINS AS AN INFLUX OF GULF MOISTURE BACKS THE DRYLINE
UP IN VICINITY OF THE NEW MEXICO STATE LINE FOR SEVERAL DAYS
BEGINNING THURSDAY.
A SLIGHT CHANCE OF STORMS WILL EXIST ACROSS NORTHEAST ZONES
WEDNESDAY NIGHT AS A 30-40 KNOT LOW LEVEL JET BEGINS USHERING
MOISTURE INTO THE SOUTH PLAINS AND A SHORTWAVE TROUGH ROUNDS THE
CREST OF THE AFOREMENTIONED DEVELOPING RIDGE. THURSDAY APPEARS TO
PRESENT THE BEST CHANCES FOR ORGANIZED CONVECTION WITH THE DRYLINE
LOCATED ACROSS THE AREA IN CONJUNCTION WITH A WARM FRONT ASSOCIATED
WITH INTENSIFYING SURFACE LOW PRESSURE ACROSS THE ROCKIES. BEST AREA
FOR CONVECTIVE INITIATION APPEARS TO BE NEAR THE EXTREME SOUTHERN
PANHANDLE INTO THE NORTHERN SOUTH/ROLLING PLAINS AREA. CAPPING WILL
ERODE THROUGHOUT THE DAY AS HEIGHTS FALL ALOFT AND LOW-MID LEVEL
COOLING INCREASES INSTABILITY ATOP A WARMING AND DEEPENING BOUNDARY
LAYER. STORM CHANCES WILL LAST INTO THE NIGHT AS THE FRONT LIFTS
NORTH AND CLOUD BASES BECOME ELEVATED.
BETTER CHANCES FOR STORMS WILL MOVE WESTWARD FRIDAY AND SATURDAY AS
THE DRYLINE STAYS PULLED BACK INTO NEW MEXICO OWING TO LEE TROUGHING
INTENSIFYING ACROSS THE FRONT RANGE. A STRENGTHENING EML MAY
PRECLUDE STORM COVERAGE TO THE EAST INTO FRIDAY AND THE
WEEKEND...FOCUSING DEVELOPMENT TO RIGHT ALONG THE DRYLINE.
QUESTIONS ARISE HEADING INTO SUNDAY AND EARLY NEXT WEEK AS TO WHEN
THE DRYLINE WILL START MIXING FARTHER EAST AGAIN AS TROUGHING
ENTERING OFF THE PACIFIC COAST BEGINS TO SLIDE THE RIDGE EAST.
&&
.PRELIMINARY POINT TEMPS/POPS...
FRIONA 80 51 88 57 87 / 40 0 0 10 20
TULIA 79 52 90 59 87 / 50 0 0 10 30
PLAINVIEW 80 54 90 61 88 / 40 0 0 10 30
LEVELLAND 81 56 90 63 90 / 10 0 0 10 20
LUBBOCK 80 56 91 65 91 / 10 0 0 10 20
DENVER CITY 81 57 90 64 94 / 10 0 0 10 20
BROWNFIELD 80 57 90 65 91 / 10 0 0 10 20
CHILDRESS 78 56 92 63 89 / 40 10 10 20 30
SPUR 77 59 93 63 91 / 10 0 10 10 30
ASPERMONT 76 60 95 67 93 / 10 10 10 10 30
&&
.LUB WATCHES/WARNINGS/ADVISORIES...
NONE.
&&
$$
33
381
FXUS64 KLUB 211138
AFDLUB
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LUBBOCK TX
638 AM CDT TUE MAY 21 2013
.UPDATE...
HAVE INCREASED POPS ACROSS THE NORTH GIVEN CONVECTIVE TREND AHEAD
OF SMALL BUT INTENSE UPPER LEVEL STORM SYSTEM ACROSS NEW MEXICO.
&&
.AVIATION...
PERIOD OF MVFR THIS MORNING WILL GIVE WAY TO VFR CONDITIONS AFTER
STORM SYSTEM ASSOCIATED WITH AN INTENSE BUT SMALL UPPER LEVEL LOW
ACROSS EASTERN NEW MEXICO. THERE EXISTS A SMALL OPPORTUNITY FOR
TSTMS TO AFFECT KLBB /FM 12-15Z/ AND CDS /13-16Z/ THOUGH
CONFIDENCE IS INSUFFICIENT TO INSERT IN TAF ATTM. NORTHERLY WINDS
WILL DIMINISH AS THE UPPER LEVEL SYSTEM PASSES. FINALLY...BR/FG
MAY BE POSSIBLE LATE TONIGHT AT BOTH TERMINALS.
&&
.PREV DISCUSSION... /ISSUED 445 AM CDT TUE MAY 21 2013/
SHORT TERM...
PRIMARY WEATHER FEATURE AFFECTING THE COUNTRY/S SENSIBLE WEATHER
CONTINUES TO BE THE MATURE LOW PRESSURE SYSTEM ACROSS THE DAKOTAS.
A TROUGH AXIS EXTENDS FROM THIS LOW INTO EASTERN NEW MEXICO EARLY
THIS MORNING WHICH HAS RESULTED IN SOME HIGH BASED RADAR ECHOES TO
OUR NORTH. AS THE TROUGH SWINGS THROUGH WEST TEXAS AROUND MID
DAY...UPPER LEVEL FLOW WILL QUICKLY TRANSITION TO NORTHWESTERLY AS
LARGE SCALE RIDGE BEGINS TO DEVELOP FROM THE DESERT SOUTHWEST INTO
CANADA. THIS WILL BECOME AN INCREASINGLY SIGNIFICANT PLAYER IN THE
EXTENDED FORECAST AS YET ANOTHER STRONG LOW COMES ASHORE THE PACIFIC
NORTHWEST.
WATER VAPOR IMAGERY DEPICTS AN AREA OF ENHANCED LIFT ACROSS
NORTHEASTERN NEW MEXICO AS THE AFOREMENTIONED TROUGH AXIS MAKES ITS
ATTEMPT TO DEEPEN. AS MODEL GUIDANCE AND ACARS PLOTS CONTINUE TO
SHOW ENHANCED WIND FIELD ON THE WESTERN PERIPHERY OF THIS
TROUGH...ALL INDICATIONS CONTINUE TO POINT TOWARD A STRENGTHENING
TREND AS IT SWINGS ACROSS THE REGION BECOMING MORE NEGATIVELY TILTED
WITH TIME. THIS IN TURN HAS ALREADY DRIVEN A SURFACE COLD FRONT
THROUGH THE ENTIRE CWFA WITH INCREASING MOISTURE IN ITS WAKE. THIS
WILL PLACE MUCH OF THE AREA WITHIN LIFT REGION AROUND SUNRISE. THE
REAL QUESTION WILL BE IF CONVECTIVE INITIATION WILL OCCUR LATER THIS
MORNING. THERE APPEARS TO BE A NEARLY STATION MESOSCALE CONVECTIVE
VORTEX ACROSS WESTERN QUAY COUNTY NM WITH ENHANCEMENT IN THE
VICINITY. AS THIS BEGINS TO KICK OUT OVER THE NEXT FEW HOURS...SOME
TSTM ACTIVITY WILL BE POSSIBLE...MAINLY OVER THE NORTHERN HALF OF
THE REGION. AT PRESENT NLDN DATA IS NOT AVAILABLE DUE TO AN OUTAGE
AND NO SFERIC ACTIVITY HAS BEEN DETECTED BY THE TTU LMA. IF IT CAN
BECOME ESTABLISHED...WOULD EXPECT ACTIVITY TO REMAIN ELEVATED WITH
THE COOLER/MORE MOIST AIR BEHIND THE FRONT HELPING TO MITIGATE THE
DOWNBURST THREAT. WE MAY SEE SOME LIGHT ACTIVITY ACROSS THE
SOUTHWEST LATER THIS MORNING AS A LEAD IMPULSE OVERSPREADS REGION
OF LOW LEVEL MOISTURE CONVERGENCE. OTHERWISE...DESPITE SOME
RESIDUAL CLOUDINESS...IT WILL BE REFRESHINGLY COOL TODAY AS
COMPARED TO MUCH OF THE LAST WEEK.
LONG TERM...
BLOCKING RIDGE WILL SET UP ACROSS THE NATION/S MIDSECTION WITH UPPER
LOWS LOCATED ACROSS EITHER COAST. AFTER DEEP MIXING BEHIND A ROLLING
PLAINS/BIG COUNTRY DESTINED DRYLINE WEDNESDAY...MOISTURE WILL RETURN
TO THE SOUTH PLAINS AS AN INFLUX OF GULF MOISTURE BACKS THE DRYLINE
UP IN VICINITY OF THE NEW MEXICO STATE LINE FOR SEVERAL DAYS
BEGINNING THURSDAY.
A SLIGHT CHANCE OF STORMS WILL EXIST ACROSS NORTHEAST ZONES
WEDNESDAY NIGHT AS A 30-40 KNOT LOW LEVEL JET BEGINS USHERING
MOISTURE INTO THE SOUTH PLAINS AND A SHORTWAVE TROUGH ROUNDS THE
CREST OF THE AFOREMENTIONED DEVELOPING RIDGE. THURSDAY APPEARS TO
PRESENT THE BEST CHANCES FOR ORGANIZED CONVECTION WITH THE DRYLINE
LOCATED ACROSS THE AREA IN CONJUNCTION WITH A WARM FRONT ASSOCIATED
WITH INTENSIFYING SURFACE LOW PRESSURE ACROSS THE ROCKIES. BEST AREA
FOR CONVECTIVE INITIATION APPEARS TO BE NEAR THE EXTREME SOUTHERN
PANHANDLE INTO THE NORTHERN SOUTH/ROLLING PLAINS AREA. CAPPING WILL
ERODE THROUGHOUT THE DAY AS HEIGHTS FALL ALOFT AND LOW-MID LEVEL
COOLING INCREASES INSTABILITY ATOP A WARMING AND DEEPENING BOUNDARY
LAYER. STORM CHANCES WILL LAST INTO THE NIGHT AS THE FRONT LIFTS
NORTH AND CLOUD BASES BECOME ELEVATED.
BETTER CHANCES FOR STORMS WILL MOVE WESTWARD FRIDAY AND SATURDAY AS
THE DRYLINE STAYS PULLED BACK INTO NEW MEXICO OWING TO LEE TROUGHING
INTENSIFYING ACROSS THE FRONT RANGE. A STRENGTHENING EML MAY
PRECLUDE STORM COVERAGE TO THE EAST INTO FRIDAY AND THE
WEEKEND...FOCUSING DEVELOPMENT TO RIGHT ALONG THE DRYLINE.
QUESTIONS ARISE HEADING INTO SUNDAY AND EARLY NEXT WEEK AS TO WHEN
THE DRYLINE WILL START MIXING FARTHER EAST AGAIN AS TROUGHING
ENTERING OFF THE PACIFIC COAST BEGINS TO SLIDE THE RIDGE EAST.
&&
.PRELIMINARY POINT TEMPS/POPS...
FRIONA 80 51 88 57 87 / 50 0 0 10 20
TULIA 79 52 90 59 87 / 40 0 0 10 30
PLAINVIEW 80 54 90 61 88 / 40 0 0 10 30
LEVELLAND 81 56 90 63 90 / 20 0 0 10 20
LUBBOCK 80 56 91 64 90 / 20 0 0 10 20
DENVER CITY 81 57 90 64 94 / 10 0 0 10 20
BROWNFIELD 80 57 90 65 91 / 10 0 0 10 20
CHILDRESS 78 56 92 63 89 / 20 10 10 20 30
SPUR 77 59 93 63 91 / 10 0 10 10 30
ASPERMONT 76 60 95 67 93 / 10 10 10 10 30
&&
.LUB WATCHES/WARNINGS/ADVISORIES...
NONE.
&&
$$
99/99/26
810
FXUS64 KLUB 210945
AFDLUB
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LUBBOCK TX
445 AM CDT TUE MAY 21 2013
.SHORT TERM...
PRIMARY WEATHER FEATURE AFFECTING THE COUNTRY/S SENSIBLE WEATHER
CONTINUES TO BE THE MATURE LOW PRESSURE SYSTEM ACROSS THE DAKOTAS.
A TROUGH AXIS EXTENDS FROM THIS LOW INTO EASTERN NEW MEXICO EARLY
THIS MORNING WHICH HAS RESULTED IN SOME HIGH BASED RADAR ECHOES TO
OUR NORTH. AS THE TROUGH SWINGS THROUGH WEST TEXAS AROUND MID
DAY...UPPER LEVEL FLOW WILL QUICKLY TRANSITION TO NORTHWESTERLY AS
LARGE SCALE RIDGE BEGINS TO DEVELOP FROM THE DESERT SOUTHWEST INTO
CANADA. THIS WILL BECOME AN INCREASINGLY SIGNIFICANT PLAYER IN THE
EXTENDED FORECAST AS YET ANOTHER STRONG LOW COMES ASHORE THE PACIFIC
NORTHWEST.
WATER VAPOR IMAGERY DEPICTS AN AREA OF ENHANCED LIFT ACROSS
NORTHEASTERN NEW MEXICO AS THE AFOREMENTIONED TROUGH AXIS MAKES ITS
ATTEMPT TO DEEPEN. AS MODEL GUIDANCE AND ACARS PLOTS CONTINUE TO
SHOW ENHANCED WIND FIELD ON THE WESTERN PERIPHERY OF THIS
TROUGH...ALL INDICATIONS CONTINUE TO POINT TOWARD A STRENGTHENING
TREND AS IT SWINGS ACROSS THE REGION BECOMING MORE NEGATIVELY TILTED
WITH TIME. THIS IN TURN HAS ALREADY DRIVEN A SURFACE COLD FRONT
THROUGH THE ENTIRE CWFA WITH INCREASING MOISTURE IN ITS WAKE. THIS
WILL PLACE MUCH OF THE AREA WITHIN LIFT REGION AROUND SUNRISE. THE
REAL QUESTION WILL BE IF CONVECTIVE INITIATION WILL OCCUR LATER THIS
MORNING. THERE APPEARS TO BE A NEARLY STATION MESOSCALE CONVECTIVE
VORTEX ACROSS WESTERN QUAY COUNTY NM WITH ENHANCEMENT IN THE
VICINITY. AS THIS BEGINS TO KICK OUT OVER THE NEXT FEW HOURS...SOME
TSTM ACTIVITY WILL BE POSSIBLE...MAINLY OVER THE NORTHERN HALF OF
THE REGION. AT PRESENT NLDN DATA IS NOT AVAILABLE DUE TO AN OUTAGE
AND NO SFERIC ACTIVITY HAS BEEN DETECTED BY THE TTU LMA. IF IT CAN
BECOME ESTABLISHED...WOULD EXPECT ACTIVITY TO REMAIN ELEVATED WITH
THE COOLER/MORE MOIST AIR BEHIND THE FRONT HELPING TO MITIGATE THE
DOWNBURST THREAT. WE MAY SEE SOME LIGHT ACTIVITY ACROSS THE
SOUTHWEST LATER THIS MORNING AS A LEAD IMPULSE OVERSPREADS REGION
OF LOW LEVEL MOISTURE CONVERGENCE. OTHERWISE...DESPITE SOME
RESIDUAL CLOUDINESS...IT WILL BE REFRESHINGLY COOL TODAY AS
COMPARED TO MUCH OF THE LAST WEEK.
&&
.LONG TERM...
BLOCKING RIDGE WILL SET UP ACROSS THE NATION/S MIDSECTION WITH UPPER
LOWS LOCATED ACROSS EITHER COAST. AFTER DEEP MIXING BEHIND A ROLLING
PLAINS/BIG COUNTRY DESTINED DRYLINE WEDNESDAY...MOISTURE WILL RETURN
TO THE SOUTH PLAINS AS AN INFLUX OF GULF MOISTURE BACKS THE DRYLINE
UP IN VICINITY OF THE NEW MEXICO STATE LINE FOR SEVERAL DAYS
BEGINNING THURSDAY.
A SLIGHT CHANCE OF STORMS WILL EXIST ACROSS NORTHEAST ZONES
WEDNESDAY NIGHT AS A 30-40 KNOT LOW LEVEL JET BEGINS USHERING
MOISTURE INTO THE SOUTH PLAINS AND A SHORTWAVE TROUGH ROUNDS THE
CREST OF THE AFOREMENTIONED DEVELOPING RIDGE. THURSDAY APPEARS TO
PRESENT THE BEST CHANCES FOR ORGANIZED CONVECTION WITH THE DRYLINE
LOCATED ACROSS THE AREA IN CONJUNCTION WITH A WARM FRONT ASSOCIATED
WITH INTENSIFYING SURFACE LOW PRESSURE ACROSS THE ROCKIES. BEST AREA
FOR CONVECTIVE INITIATION APPEARS TO BE NEAR THE EXTREME SOUTHERN
PANHANDLE INTO THE NORTHERN SOUTH/ROLLING PLAINS AREA. CAPPING WILL
ERODE THROUGHOUT THE DAY AS HEIGHTS FALL ALOFT AND LOW-MID LEVEL
COOLING INCREASES INSTABILITY ATOP A WARMING AND DEEPENING BOUNDARY
LAYER. STORM CHANCES WILL LAST INTO THE NIGHT AS THE FRONT LIFTS
NORTH AND CLOUD BASES BECOME ELEVATED.
BETTER CHANCES FOR STORMS WILL MOVE WESTWARD FRIDAY AND SATURDAY AS
THE DRYLINE STAYS PULLED BACK INTO NEW MEXICO OWING TO LEE TROUGHING
INTENSIFYING ACROSS THE FRONT RANGE. A STRENGTHENING EML MAY
PRECLUDE STORM COVERAGE TO THE EAST INTO FRIDAY AND THE
WEEKEND...FOCUSING DEVELOPMENT TO RIGHT ALONG THE DRYLINE.
QUESTIONS ARISE HEADING INTO SUNDAY AND EARLY NEXT WEEK AS TO WHEN
THE DRYLINE WILL START MIXING FARTHER EAST AGAIN AS TROUGHING
ENTERING OFF THE PACIFIC COAST BEGINS TO SLIDE THE RIDGE EAST.
&&
.PRELIMINARY POINT TEMPS/POPS...
FRIONA 80 51 88 57 87 / 20 0 0 10 20
TULIA 79 52 90 59 87 / 20 0 0 10 30
PLAINVIEW 80 54 90 61 88 / 20 0 0 10 30
LEVELLAND 81 56 90 63 90 / 10 0 0 10 20
LUBBOCK 80 56 91 64 90 / 10 0 0 10 20
DENVER CITY 81 57 90 64 94 / 10 0 0 10 20
BROWNFIELD 80 57 90 65 91 / 10 0 0 10 20
CHILDRESS 78 56 92 63 89 / 10 10 10 20 30
SPUR 77 59 93 63 91 / 10 0 10 10 30
ASPERMONT 76 60 95 67 93 / 10 10 10 10 30
&&
.LUB WATCHES/WARNINGS/ADVISORIES...
NONE.
&&
$$
26/31
068
FXUS64 KLUB 210433
AFDLUB
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LUBBOCK TX
1133 PM CDT MON MAY 20 2013
.AVIATION...
COLD FRONT NOW SOUTH OF BOTH TAF SITES AND FOCUS SHIFTS TO PRECIP
POTENTIAL TOWARD 12Z. UPPER LEVEL DISTURBANCE TO MOVE ACROSS THE
PANHANDLE LOOKS TO HAVE BETTER LOW LEVEL MOISTURE TO WORK VCNTY OF
KCDS WITH TS POTENTIAL LOOKING GREATER THAN IT PREVIOUSLY DID.
WOULD ANTICIPATE THE 12Z-15Z WINDOW TO OFFER THE HIGHEST CHANCE
FOR TSRA...BUT WITH THAT PERIOD IN FIRST NINE HOURS OF THE TAF AND
CONFIDENCE NOT HIGH ENOUGH TO RUN WITH A TEMPO GROUP...WILL LEAVE
TS MENTION OUT ATTM. CHANCES LOOK LOWER AT KLBB WHERE LOW LEVEL
MOISTURE NOT AS PLENTIFUL AND WITH BEST LIFT FROM THE DISTURBANCE
PASSING NORTH OF THE TAF SITE.
&&
.PREV DISCUSSION... /ISSUED 620 PM CDT MON MAY 20 2013/
AVIATION...
COLD FRONT TO MOVE PAST BOTH TAF SITES THIS EVENING. TOWARD
SUNRISE TUESDAY WILL SEE AN UPPER LEVEL DISTURBANCE MOVE ACROSS
THE PANHANDLE THAT COULD BRING SOME LIGHT SHOWERS. PRECIP CHANCES
STILL LOOKING TOO SMALL TO PLACE IN TAFS BUT SHOULD SEE AT LEAST A
BROKEN MID LEVEL DECK THROUGH THE MORNING.
PREV DISCUSSION... /ISSUED 341 PM CDT MON MAY 20 2013/
SHORT TERM...
A QUIET WEATHER DAY ACROSS OUR CWA...ESPECIALLY WHAT IS CURRENTLY
UNFOLDING TO OUR EASTERN NEIGHBORS/NWS NORMAN. DRY AIR HAS PUSHED
ACROSS OUR REGION WITH UPPER TEEN DEWPOINTS OVER THE NORTHWESTERN
SOUTH PLAINS TO NEAR 30 DEGREES OVER THE NORTHEASTERN ROLLING
PLAINS. FARTHER NORTH ACROSS THE TEXAS PANHANDLE...A COLD FRONT
WAS SLOWLY PUSHING SOUTH OF A CLAYTON...DALHART...BORGER...TO
CANADIAN LINE AND THIS WILL CONTINUE TO SLIDE SOUTH THROUGH
TONIGHT AND PUSH ACROSS OUR FORECAST AREA BY AROUND 6 AM TOMORROW
MORNING. THE MODELS DO INCREASE DEWPOINTS BEHIND THE FRONT AND
THERE WILL BE A TROUGH MOVING OVERHEAD TOMORROW MORNING. THIS TROF
SHOULD HELP INCREASE LIFT ACROSS THE REGION THROUGH THE EARLY
MORNING AND MID-LEVEL MOISTURE WILL INCREASE AS WELL.
HOWEVER...VERY DRY BOUNDARY LAYER SHOULD EVAPORATE ANY
PRECIPITATION THAT IS ABLE TO DEVELOP. CONDITIONS MAY ALSO FAVOR A
FEW HEAT BURSTS OVERNIGHT TONIGHT WITH THE DISSIPATION OF ANY OF
THESE HIGH BASED SHOWERS. UNFORTUNATELY THE COVERAGE AND ALSO
CONFIDENCE IS NOT HIGH ENOUGH TO PUT MENTIONABLE POPS IN AT THIS
TIME.
TROF AXIS WILL BE EAST OF THE REGION FOR TUESDAY AFTERNOON WHICH
WILL BRING A RAPID CUTOFF TO ANY PRECIPITATION. COOL AIR WILL BE IN
PLACE ACROSS THE REGION WHICH WILL HELP TO BRING HIGH TEMPERATURES
BACK DOWN INTO THE UPPER 70S NORTHWEST TO UPPER 80S SOUTHEAST WITH
CLEAR SKIES.
JORDAN
LONG TERM...
AFTER A SLIGHT COOL DOWN TOMORROW DUE TO A COLD FRONTAL PASSAGE
ASSOCIATED WITH AN UA LOW PROPAGATING ENE TOWARDS THE GREAT LAKES
REGION...TEMPS WILL QUICKLY CLIMB BACK INTO THE 90S BY MIDWEEK...AS
AN AMPLIFIED UA RIDGE DOMINATES THE CENTRAL CONUS. THE OMNIPRESENT
DRYLINE WILL SURGE TO NEAR THE TEXAS/NEW MEXICO BORDER
WEDNESDAY...TO MORE SO ACROSS EASTERN NEW MEXICO BY THURSDAY...AS
THE LLJ RAMPS UP TO 30-40 KTS THUS INCREASING LOW LEVEL MOISTURE
/DEWPOINTS IN THE 50S AND 60S BY THU MORNING/. MODEL SOLUTIONS
HINT AT AN UA IMPULSE ROUNDING THE UA RIDGE AND MOVING NEAR THE
EASTERN PANHANDLES WEDNESDAY EVENING...WHICH PERHAPS MAY BE A
SYNOPTIC SPARK FOR SHOWERS AND THUNDERSTORMS ACROSS THE SERN TEXAS
PANHANDLE. HAVE GONE AHEAD AND INSERTED SLIGHT CHANCE POPS FOR
THIS POTENTIAL. PRECIP WILL PERSIST INTO THURSDAY AS UPSLOPE SFC
WINDS ENCOURAGE LIGHT PRECIP IN THE MORNING...WITH STORMS POSSIBLE
BY THE AFTN THANKS TO PLENTIFUL SUNSHINE AND HENCE DAYTIME
DESTABILIZATION /SFC-BASED CAPE OF 2.0-3.0 KJ/KG/. SEVERE POTENTIAL
WILL BE ISOLATED AT BEST SINCE LARGE SCALE SUBSIDENCE WILL BE
OVERSPREADING THE REGION. HOWEVER THE CAP APPEARS MINIMAL AND WILL
HOLD ON TO MENTIONABLE POPS THURSDAY AND INTO FRIDAY AS THE SAME
SCENARIO WILL EXIST EXCEPT FOR THE DRYLINE RETREATING FARTHER INTO
EASTERN NEW MEXICO BY WEEKS END. BETTER PRECIP CHANCES WILL LIKELY
OCCUR ACROSS THE ROLLING PLAINS...NEAREST TO BEST MOISTURE AXIS.
DURING THE DAY SATURDAY...THE CAP APPEARS TO BE STRONG ENOUGH TO
MITIGATE THE DEVELOPMENT OF PRECIP ACROSS THE CWA. THUS STORMS MAY BE
CONFINED TO CENTRAL/EASTERN NEW MEXICO COINCIDING WITH THE LOCATION
OF THE DRYLINE...AND THE TRANSPORT OF GULF MOISTURE DUE TO THE
ORIENTATION OF THE UA RIDGE. HOWEVER BY THE EVENING HOURS...THE CAP
WOULD HAVE WEAKENED ACROSS THE WESTERN ZONES AND IT IS NO WONDER
LONG TERM SOLUTIONS DISPLAY PRECIP NEAR THE TEXAS/NEW MEXICO
BORDER DURING THE AFOREMENTIONED PERIOD. THIS SEEMS VALID AND WILL
ADD SLIGHT CHANCE POPS SATURDAY EVENING-NIGHT. BY WEEKEND/S
END...THE UA RIDGE WILL COMMENCE TO SHIFT EAST AS A BROAD UA LOW
DOMINATES THE PACIFIC NW REGION. THE DRYLINE AND ASSOCIATED PRECIP
MAY THEREFORE NEAR WESTERN ZONES ON SUNDAY AND MONDAY. AS A
RESULT...HAVE BUMPED UP POPS TO 10-14 PERCENT ACROSS THE SAID
AREAS.
EXPECT WARM TEMPS THROUGHOUT THE EXTENDED PERIOD WITH HIGHS
GENERALLY IN THE 90S...WITH THE EXCEPTION OF A FEW 80S ON THURSDAY
AND FRIDAY GIVEN ANTICIPATED PRECIP AND THUS INCREASED CLOUDINESS.
COULD SEE TEMPS DIP BACK INTO THE 80S CWA-WIDE ON TUESDAY SINCE THE
UA RIDGE IS NO LONGER OVERHEAD.
FIRE WEATHER...
BREEZY SRLY WINDS WEDNESDAY AFTN COMBINED WITH TEMPS IN THE LOWER
TO MID 90S /8-10 DEGREES ABOVE NORM/ WILL RESULT IN RELATIVE
HUMIDITY VALUES DROPPING TO 10-15 PERCENT MORE SO ON THE CAPROCK.
LOWEST HUMIDITIES ARE EXPECTED NEAR THE TEXAS NEW MEXICO BORDER. AS
SUCH...ELEVATED TO CRITICAL FIRE WEATHER CONDITIONS WILL EXIST.
THERE IS A MENTION IN THE HAZARDOUS WEATHER OUTLOOK BUT ADDITIONAL
HIGHLIGHTS MAY BE WARRANTED.
&&
.PRELIMINARY POINT TEMPS/POPS...
FRIONA 49 78 52 90 56 / 10 10 0 0 10
TULIA 53 79 54 92 58 / 10 10 0 10 10
PLAINVIEW 55 80 56 92 60 / 10 10 0 10 10
LEVELLAND 57 83 56 92 62 / 0 0 0 0 10
LUBBOCK 57 82 57 93 63 / 10 10 0 10 10
DENVER CITY 55 84 55 92 63 / 0 10 0 0 10
BROWNFIELD 59 84 56 92 64 / 0 10 0 0 10
CHILDRESS 59 81 57 94 62 / 10 10 10 10 20
SPUR 63 86 57 95 62 / 10 10 0 10 10
ASPERMONT 63 87 61 97 66 / 10 10 10 10 10
&&
.LUB WATCHES/WARNINGS/ADVISORIES...
NONE.
&&
$$
07
579
FXUS64 KLUB 202320
AFDLUB
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LUBBOCK TX
620 PM CDT MON MAY 20 2013
.AVIATION...
COLD FRONT TO MOVE PAST BOTH TAF SITES THIS EVENING. TOWARD
SUNRISE TUESDAY WILL SEE AN UPPER LEVEL DISTURBANCE MOVE ACROSS
THE PANHANDLE THAT COULD BRING SOME LIGHT SHOWERS. PRECIP CHANCES
STILL LOOKING TOO SMALL TO PLACE IN TAFS BUT SHOULD SEE AT LEAST A
BROKEN MID LEVEL DECK THROUGH THE MORNING.
&&
.PREV DISCUSSION... /ISSUED 341 PM CDT MON MAY 20 2013/
SHORT TERM...
A QUIET WEATHER DAY ACROSS OUR CWA...ESPECIALLY WHAT IS CURRENTLY
UNFOLDING TO OUR EASTERN NEIGHBORS/NWS NORMAN. DRY AIR HAS PUSHED
ACROSS OUR REGION WITH UPPER TEEN DEWPOINTS OVER THE NORTHWESTERN
SOUTH PLAINS TO NEAR 30 DEGREES OVER THE NORTHEASTERN ROLLING
PLAINS. FARTHER NORTH ACROSS THE TEXAS PANHANDLE...A COLD FRONT
WAS SLOWLY PUSHING SOUTH OF A CLAYTON...DALHART...BORGER...TO
CANADIAN LINE AND THIS WILL CONTINUE TO SLIDE SOUTH THROUGH
TONIGHT AND PUSH ACROSS OUR FORECAST AREA BY AROUND 6 AM TOMORROW
MORNING. THE MODELS DO INCREASE DEWPOINTS BEHIND THE FRONT AND
THERE WILL BE A TROUGH MOVING OVERHEAD TOMORROW MORNING. THIS TROF
SHOULD HELP INCREASE LIFT ACROSS THE REGION THROUGH THE EARLY
MORNING AND MID-LEVEL MOISTURE WILL INCREASE AS WELL.
HOWEVER...VERY DRY BOUNDARY LAYER SHOULD EVAPORATE ANY
PRECIPITATION THAT IS ABLE TO DEVELOP. CONDITIONS MAY ALSO FAVOR A
FEW HEAT BURSTS OVERNIGHT TONIGHT WITH THE DISSIPATION OF ANY OF
THESE HIGH BASED SHOWERS. UNFORTUNATELY THE COVERAGE AND ALSO
CONFIDENCE IS NOT HIGH ENOUGH TO PUT MENTIONABLE POPS IN AT THIS
TIME.
TROF AXIS WILL BE EAST OF THE REGION FOR TUESDAY AFTERNOON WHICH
WILL BRING A RAPID CUTOFF TO ANY PRECIPITATION. COOL AIR WILL BE IN
PLACE ACROSS THE REGION WHICH WILL HELP TO BRING HIGH TEMPERATURES
BACK DOWN INTO THE UPPER 70S NORTHWEST TO UPPER 80S SOUTHEAST WITH
CLEAR SKIES.
JORDAN
LONG TERM...
AFTER A SLIGHT COOL DOWN TOMORROW DUE TO A COLD FRONTAL PASSAGE
ASSOCIATED WITH AN UA LOW PROPAGATING ENE TOWARDS THE GREAT LAKES
REGION...TEMPS WILL QUICKLY CLIMB BACK INTO THE 90S BY MIDWEEK...AS
AN AMPLIFIED UA RIDGE DOMINATES THE CENTRAL CONUS. THE OMNIPRESENT
DRYLINE WILL SURGE TO NEAR THE TEXAS/NEW MEXICO BORDER
WEDNESDAY...TO MORE SO ACROSS EASTERN NEW MEXICO BY THURSDAY...AS
THE LLJ RAMPS UP TO 30-40 KTS THUS INCREASING LOW LEVEL MOISTURE
/DEWPOINTS IN THE 50S AND 60S BY THU MORNING/. MODEL SOLUTIONS
HINT AT AN UA IMPULSE ROUNDING THE UA RIDGE AND MOVING NEAR THE
EASTERN PANHANDLES WEDNESDAY EVENING...WHICH PERHAPS MAY BE A
SYNOPTIC SPARK FOR SHOWERS AND THUNDERSTORMS ACROSS THE SERN TEXAS
PANHANDLE. HAVE GONE AHEAD AND INSERTED SLIGHT CHANCE POPS FOR
THIS POTENTIAL. PRECIP WILL PERSIST INTO THURSDAY AS UPSLOPE SFC
WINDS ENCOURAGE LIGHT PRECIP IN THE MORNING...WITH STORMS POSSIBLE
BY THE AFTN THANKS TO PLENTIFUL SUNSHINE AND HENCE DAYTIME
DESTABILIZATION /SFC-BASED CAPE OF 2.0-3.0 KJ/KG/. SEVERE POTENTIAL
WILL BE ISOLATED AT BEST SINCE LARGE SCALE SUBSIDENCE WILL BE
OVERSPREADING THE REGION. HOWEVER THE CAP APPEARS MINIMAL AND WILL
HOLD ON TO MENTIONABLE POPS THURSDAY AND INTO FRIDAY AS THE SAME
SCENARIO WILL EXIST EXCEPT FOR THE DRYLINE RETREATING FARTHER INTO
EASTERN NEW MEXICO BY WEEKS END. BETTER PRECIP CHANCES WILL LIKELY
OCCUR ACROSS THE ROLLING PLAINS...NEAREST TO BEST MOISTURE AXIS.
DURING THE DAY SATURDAY...THE CAP APPEARS TO BE STRONG ENOUGH TO
MITIGATE THE DEVELOPMENT OF PRECIP ACROSS THE CWA. THUS STORMS MAY BE
CONFINED TO CENTRAL/EASTERN NEW MEXICO COINCIDING WITH THE LOCATION
OF THE DRYLINE...AND THE TRANSPORT OF GULF MOISTURE DUE TO THE
ORIENTATION OF THE UA RIDGE. HOWEVER BY THE EVENING HOURS...THE CAP
WOULD HAVE WEAKENED ACROSS THE WESTERN ZONES AND IT IS NO WONDER
LONG TERM SOLUTIONS DISPLAY PRECIP NEAR THE TEXAS/NEW MEXICO
BORDER DURING THE AFOREMENTIONED PERIOD. THIS SEEMS VALID AND WILL
ADD SLIGHT CHANCE POPS SATURDAY EVENING-NIGHT. BY WEEKEND/S
END...THE UA RIDGE WILL COMMENCE TO SHIFT EAST AS A BROAD UA LOW
DOMINATES THE PACIFIC NW REGION. THE DRYLINE AND ASSOCIATED PRECIP
MAY THEREFORE NEAR WESTERN ZONES ON SUNDAY AND MONDAY. AS A
RESULT...HAVE BUMPED UP POPS TO 10-14 PERCENT ACROSS THE SAID
AREAS.
EXPECT WARM TEMPS THROUGHOUT THE EXTENDED PERIOD WITH HIGHS
GENERALLY IN THE 90S...WITH THE EXCEPTION OF A FEW 80S ON THURSDAY
AND FRIDAY GIVEN ANTICIPATED PRECIP AND THUS INCREASED CLOUDINESS.
COULD SEE TEMPS DIP BACK INTO THE 80S CWA-WIDE ON TUESDAY SINCE THE
UA RIDGE IS NO LONGER OVERHEAD.
FIRE WEATHER...
BREEZY SRLY WINDS WEDNESDAY AFTN COMBINED WITH TEMPS IN THE LOWER
TO MID 90S /8-10 DEGREES ABOVE NORM/ WILL RESULT IN RELATIVE
HUMIDITY VALUES DROPPING TO 10-15 PERCENT MORE SO ON THE CAPROCK.
LOWEST HUMIDITIES ARE EXPECTED NEAR THE TEXAS NEW MEXICO BORDER. AS
SUCH...ELEVATED TO CRITICAL FIRE WEATHER CONDITIONS WILL EXIST.
THERE IS A MENTION IN THE HAZARDOUS WEATHER OUTLOOK BUT ADDITIONAL
HIGHLIGHTS MAY BE WARRANTED.
&&
.PRELIMINARY POINT TEMPS/POPS...
FRIONA 49 78 52 90 56 / 10 10 0 0 10
TULIA 53 79 54 92 58 / 10 10 0 10 10
PLAINVIEW 55 80 56 92 60 / 10 10 0 10 10
LEVELLAND 57 83 56 92 62 / 0 0 0 0 10
LUBBOCK 57 82 57 93 63 / 10 10 0 10 10
DENVER CITY 55 84 55 92 63 / 0 10 0 0 10
BROWNFIELD 59 84 56 92 64 / 0 10 0 0 10
CHILDRESS 59 81 57 94 62 / 10 10 10 10 20
SPUR 63 86 57 95 62 / 10 10 0 10 10
ASPERMONT 63 87 61 97 66 / 10 10 10 10 10
&&
.LUB WATCHES/WARNINGS/ADVISORIES...
NONE.
&&
$$
07
070
FXUS64 KLUB 202041
AFDLUB
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LUBBOCK TX
341 PM CDT MON MAY 20 2013
.SHORT TERM...
A QUIET WEATHER DAY ACROSS OUR CWA...ESPECIALLY WHAT IS CURRENTLY
UNFOLDING TO OUR EASTERN NEIGHBORS/NWS NORMAN. DRY AIR HAS PUSHED
ACROSS OUR REGION WITH UPPER TEEN DEWPOINTS OVER THE NORTHWESTERN
SOUTH PLAINS TO NEAR 30 DEGREES OVER THE NORTHEASTERN ROLLING
PLAINS. FARTHER NORTH ACROSS THE TEXAS PANHANDLE...A COLD FRONT
WAS SLOWLY PUSHING SOUTH OF A CLAYTON...DALHART...BORGER...TO
CANADIAN LINE AND THIS WILL CONTINUE TO SLIDE SOUTH THROUGH
TONIGHT AND PUSH ACROSS OUR FORECAST AREA BY AROUND 6 AM TOMORROW
MORNING. THE MODELS DO INCREASE DEWPOINTS BEHIND THE FRONT AND
THERE WILL BE A TROUGH MOVING OVERHEAD TOMORROW MORNING. THIS TROF
SHOULD HELP INCREASE LIFT ACROSS THE REGION THROUGH THE EARLY
MORNING AND MID-LEVEL MOISTURE WILL INCREASE AS WELL.
HOWEVER...VERY DRY BOUNDARY LAYER SHOULD EVAPORATE ANY
PRECIPITATION THAT IS ABLE TO DEVELOP. CONDITIONS MAY ALSO FAVOR A
FEW HEAT BURSTS OVERNIGHT TONIGHT WITH THE DISSIPATION OF ANY OF
THESE HIGH BASED SHOWERS. UNFORTUNATELY THE COVERAGE AND ALSO
CONFIDENCE IS NOT HIGH ENOUGH TO PUT MENTIONABLE POPS IN AT THIS
TIME.
TROF AXIS WILL BE EAST OF THE REGION FOR TUESDAY AFTERNOON WHICH
WILL BRING A RAPID CUTOFF TO ANY PRECIPITATION. COOL AIR WILL BE IN
PLACE ACROSS THE REGION WHICH WILL HELP TO BRING HIGH TEMPERATURES
BACK DOWN INTO THE UPPER 70S NORTHWEST TO UPPER 80S SOUTHEAST WITH
CLEAR SKIES.
JORDAN
&&
.LONG TERM...
AFTER A SLIGHT COOL DOWN TOMORROW DUE TO A COLD FRONTAL PASSAGE
ASSOCIATED WITH AN UA LOW PROPAGATING ENE TOWARDS THE GREAT LAKES
REGION...TEMPS WILL QUICKLY CLIMB BACK INTO THE 90S BY MIDWEEK...AS
AN AMPLIFIED UA RIDGE DOMINATES THE CENTRAL CONUS. THE OMNIPRESENT
DRYLINE WILL SURGE TO NEAR THE TEXAS/NEW MEXICO BORDER
WEDNESDAY...TO MORE SO ACROSS EASTERN NEW MEXICO BY THURSDAY...AS
THE LLJ RAMPS UP TO 30-40 KTS THUS INCREASING LOW LEVEL MOISTURE
/DEWPOINTS IN THE 50S AND 60S BY THU MORNING/. MODEL SOLUTIONS
HINT AT AN UA IMPULSE ROUNDING THE UA RIDGE AND MOVING NEAR THE
EASTERN PANHANDLES WEDNESDAY EVENING...WHICH PERHAPS MAY BE A
SYNOPTIC SPARK FOR SHOWERS AND THUNDERSTORMS ACROSS THE SERN TEXAS
PANHANDLE. HAVE GONE AHEAD AND INSERTED SLIGHT CHANCE POPS FOR
THIS POTENTIAL. PRECIP WILL PERSIST INTO THURSDAY AS UPSLOPE SFC
WINDS ENCOURAGE LIGHT PRECIP IN THE MORNING...WITH STORMS POSSIBLE
BY THE AFTN THANKS TO PLENTIFUL SUNSHINE AND HENCE DAYTIME
DESTABILIZATION /SFC-BASED CAPE OF 2.0-3.0 KJ/KG/. SEVERE POTENTIAL
WILL BE ISOLATED AT BEST SINCE LARGE SCALE SUBSIDENCE WILL BE
OVERSPREADING THE REGION. HOWEVER THE CAP APPEARS MINIMAL AND WILL
HOLD ON TO MENTIONABLE POPS THURSDAY AND INTO FRIDAY AS THE SAME
SCENARIO WILL EXIST EXCEPT FOR THE DRYLINE RETREATING FARTHER INTO
EASTERN NEW MEXICO BY WEEKS END. BETTER PRECIP CHANCES WILL LIKELY
OCCUR ACROSS THE ROLLING PLAINS...NEAREST TO BEST MOISTURE AXIS.
DURING THE DAY SATURDAY...THE CAP APPEARS TO BE STRONG ENOUGH TO
MITIGATE THE DEVELOPMENT OF PRECIP ACROSS THE CWA. THUS STORMS MAY BE
CONFINED TO CENTRAL/EASTERN NEW MEXICO COINCIDING WITH THE LOCATION
OF THE DRYLINE...AND THE TRANSPORT OF GULF MOISTURE DUE TO THE
ORIENTATION OF THE UA RIDGE. HOWEVER BY THE EVENING HOURS...THE CAP
WOULD HAVE WEAKENED ACROSS THE WESTERN ZONES AND IT IS NO WONDER
LONG TERM SOLUTIONS DISPLAY PRECIP NEAR THE TEXAS/NEW MEXICO
BORDER DURING THE AFOREMENTIONED PERIOD. THIS SEEMS VALID AND WILL
ADD SLIGHT CHANCE POPS SATURDAY EVENING-NIGHT. BY WEEKEND/S
END...THE UA RIDGE WILL COMMENCE TO SHIFT EAST AS A BROAD UA LOW
DOMINATES THE PACIFIC NW REGION. THE DRYLINE AND ASSOCIATED PRECIP
MAY THEREFORE NEAR WESTERN ZONES ON SUNDAY AND MONDAY. AS A
RESULT...HAVE BUMPED UP POPS TO 10-14 PERCENT ACROSS THE SAID
AREAS.
EXPECT WARM TEMPS THROUGHOUT THE EXTENDED PERIOD WITH HIGHS
GENERALLY IN THE 90S...WITH THE EXCEPTION OF A FEW 80S ON THURSDAY
AND FRIDAY GIVEN ANTICIPATED PRECIP AND THUS INCREASED CLOUDINESS.
COULD SEE TEMPS DIP BACK INTO THE 80S CWA-WIDE ON TUESDAY SINCE THE
UA RIDGE IS NO LONGER OVERHEAD.
&&
.FIRE WEATHER...
BREEZY SRLY WINDS WEDNESDAY AFTN COMBINED WITH TEMPS IN THE LOWER
TO MID 90S /8-10 DEGREES ABOVE NORM/ WILL RESULT IN RELATIVE
HUMIDITY VALUES DROPPING TO 10-15 PERCENT MORE SO ON THE CAPROCK.
LOWEST HUMIDITIES ARE EXPECTED NEAR THE TEXAS NEW MEXICO BORDER. AS
SUCH...ELEVATED TO CRITICAL FIRE WEATHER CONDITIONS WILL EXIST.
THERE IS A MENTION IN THE HAZARDOUS WEATHER OUTLOOK BUT ADDITIONAL
HIGHLIGHTS MAY BE WARRANTED.
&&
.PRELIMINARY POINT TEMPS/POPS...
FRIONA 49 78 52 90 56 / 10 10 0 0 10
TULIA 53 79 54 92 58 / 10 10 0 10 10
PLAINVIEW 55 80 56 92 60 / 10 10 0 10 10
LEVELLAND 57 83 56 92 62 / 0 0 0 0 10
LUBBOCK 58 82 58 93 64 / 0 0 0 10 10
DENVER CITY 55 84 55 92 63 / 0 10 0 0 10
BROWNFIELD 59 84 56 92 64 / 0 10 0 0 10
CHILDRESS 59 81 57 94 62 / 10 10 10 10 20
SPUR 63 86 57 95 62 / 10 10 0 10 10
ASPERMONT 63 87 61 97 66 / 10 10 10 10 10
&&
.LUB WATCHES/WARNINGS/ADVISORIES...
NONE.
&&
$$
14/29
824
FXUS64 KLUB 201139
AFDLUB
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LUBBOCK TX
639 AM CDT MON MAY 20 2013
.AVIATION...
PREVAILING VFR CONDITIONS. WEST WINDS WILL INCREASE TO 15 TO 20
KNOTS EARLY THIS AFTERNOON AT KLBB WITH GUSTS OF 20 TO 25 KNOTS. A
DRY FRONT WILL PUSH TOWARD KCDS LATE THIS AFTERNOON AND EARLY THIS
EVENING VEERING WINDS TO THE NORTH ABOVE 12 KNOTS WITH GUSTS TO
NEAR 20 KNOTS. FRONT WILL IMPACT KLBB THIS EVENING WITH WINDS
BECOMING NORTH/NORTHEAST BY MIDNIGHT. WILL SEE SCATTERED CLOUDS
DEVELOP AROUND FL150 AT BOTH TERMINALS THIS EVENING AND TONIGHT.
&&
.PREV DISCUSSION... /ISSUED 415 AM CDT MON MAY 20 2013/
SHORT TERM...
UPPER LOW ACROSS THE NORTHERN AND CENTRAL GREAT PLAINS WILL NOT MAKE
MUCH IF ANY HEADWAY TODAY. THE FIRST IMPULSE ROTATING AROUND THE
BASE OF THIS LOW IS CURRENTLY PRODUCING SOME MID LEVEL CLOUDINESS
ACROSS PORTIONS OF THE EXTREME SOUTHERN PANHANDLE...WHICH WILL
LIFT TO THE NORTHEAST THIS MORNING. AT THE SURFACE...AN AREA OF LOW
PRESSURE WILL DEEPEN ACROSS THE ROLLING PLAINS INTO THE BIG
COUNTRY...ALLOWING THE DRYLINE TO MIX QUICKLY EAST OF THE AREA LATER
THIS MORNING AND EARLY THIS AFTERNOON. BREEZY WINDS WILL BACK
WEST/SOUTHWEST LATER THIS MORNING AND THIS AFTERNOON AS DEEP MIXING
TAKES PLACE AND A DRY AIRMASS ONCE AGAIN DOMINATES THE FAR SOUTHERN
PANHANDLE...SOUTH PLAINS...AND ROLLING PLAINS UNDER CLEAR SKIES.
ANOTHER TOASTY DAY IS THUS ON TAP WITH TEMPERATURES RANGING FROM THE
MID TO UPPER 80S NORTHWEST TO NEAR 100 SOUTHEAST. ELEVATED TO
BRIEFLY CRITICAL FIRE WEATHER CONDITIONS WILL ONCE AGAIN DEVELOP
ACROSS THE AREA. SEE FIRE WEATHER SECTION BELOW.
THE SECOND DISTURBANCE INDUCED BY THE AFOREMENTIONED UPPER LOW WILL
IMPACT THE REGION THIS EVENING AND TONIGHT. WINDS WILL VEER
NORTHERLY AS MID LEVEL CLOUDS MOVE IN FROM THE NORTH. FORECAST
SOUNDINGS DO NOT SUGGEST ENOUGH MOISTENING IN THE LOW LEVELS TO
WARRANT MENTIONABLE RAIN CHANCES AT THIS TIME...BUT WILL LIKELY SEE
SOME VIRGA SHOWERS DEVELOP AND PERHAPS A FEW RUMBLES OF THUNDER. DRY
AIR NEAR THE SURFACE WILL BRING ABOUT THE POSSIBILITY OF LOCALIZED
DOWNBURSTS OR HEAT BURSTS TONIGHT INTO MID-MORNING ON TUESDAY.
LONG TERM...
NOT MUCH CHANGE IN THE LARGE SCALE EVOLUTION FOR THIS WEEK THOUGH
THERE ARE SOME DETAILS WHICH DESERVE SOME MENTION. MAIN STORM
SYSTEM WILL BE ACROSS THE EASTERN DAKOTAS BY TUESDAY MORNING WITH A
DRAGGING TROUGH INTO EASTERN NEW MEXICO WHICH SHOULD PUSH EAST OFF
THE AREA BY 00Z. BY MID WEEK...RIDGING BUILDS BACK INTO THE CENTRAL
STATES AS PACIFIC NORTHWEST LOW COMES ASHORE. THE HIGH AMPLITUDE
RIDGE THEN KEEPS THE ENERGY BLOCKED ACROSS THE NORTHWESTERN STATES
AND YIELDS PROTRACTED SOUTHWESTERLY FLOW THROUGH THE END OF THE
PERIOD.
THE MUCH ANTICIPATED COLD FRONT SHOULD BE THROUGH THE ENTIRE CWFA BY
DAYBREAK TUESDAY THOUGH ITS EFFECTS ARE NOT AS PRONOUNCED AS EARLIER
PROGS INDICATED. RETURN FLOW SHOULD SET UP BY LATE AFTERNOON AND
THOUGH WHILE THE BULK OF PRECIPITATION WILL BE EAST OF THE
REGION...THERE WILL EXISTS FOR A FEW HIGH BASED VIRGA SHOWERS
DURING THE AFTERNOON WHICH COULD PRODUCE GUSTY SURFACE WINDS. THAT
SAID...PROSPECTS FOR MEASURABLE PRECIPITATION REMAIN BELOW
THRESHOLDS FOR EXPLICIT MENTION IN THE FCST. MORE SUBSTANTIAL LOW
LEVEL MOIST ADVECTION WILL OCCUR TUESDAY NIGHT DRIVING THE DRYLINE
ALL THE WAY TO NEW MEXICO. ONCE AGAIN...WE WILL PROBABLY SEE SOME
HIGH BASED VIRGA SHOWERS ONCE AGAIN. BY THURSDAY...DRYLINE
PROGRESSION WILL BE DAMPENED THUS REMAINING NEAR THE STATE LINE
WITH TSTMS POSSIBLE OVER MUCH OF THE REGION. WITH PW UP IN THE
25MM RANGE WE COULD SEE SOME DECENT RAINFALL AMOUNTS AND HAVE
CONTINUED THE UPWARD TREND ON POPS FOR THU/FRI AND EVEN INTO
SATURDAY THOUGH WE MAY SEE STORMS LIMITED TO THE EASTERN ZONES.
HOWEVER...AS TIME PROGRESSES...WE WILL PROBABLY SEE MORE STORMS
BEGIN TO FIRE ACROSS EASTERN NEW MEXICO LATE THIS WEEKEND WHICH
COULD MOVE INTO THE WEST EACH AFTERNOON.
FIRE WEATHER...
ELEVATED TO BRIEFLY CRITICAL CONDITIONS WILL DEVELOP THIS
AFTERNOON...WITH THE GREATEST THREAT FOR CONCERN WEST OF A VIGO PARK
TO LITTLEFIELD LINE. THIS IS WHERE WINDS WILL BE HIGHEST AT AROUND
20 MPH AS RELATIVE HUMIDITIES WILL FALL INTO THE SINGLE DIGITS
AREAWIDE. WILL ISSUE A RANGELAND FIRE DANGER STATEMENT GIVEN THE
MARGINAL WIND SPEEDS. THE OTHER AREA OF CONCERN IS SOUTHEAST OF A
LINE FROM GUTHRIE TO JUSTICEBURG AS A WEAKENING LOW LEVEL JET WILL
LINGER INTO THE AFTERNOON. GIVEN THAT THE LLJ WILL MOVE EAST AND
WEAKEN CONSIDERABLY BY PEAK HEATING THIS AFTERNOON AND THE EXTRA
DISTANCE FOR HIGHER MOMENTUM TO MIX TO THE SURFACE OFF THE
CAPROCK...WILL LEAVE THIS AREA OUT OF ANY HIGHLIGHTS TODAY.
ELEVATED TO NEAR CRITICAL FIRE WEATHER CONDITIONS WILL RETURN TO
THE TX/NM STATE LINE COUNTIES ON WEDNESDAY.
&&
.PRELIMINARY POINT TEMPS/POPS...
FRIONA 84 49 77 54 90 / 0 10 10 10 0
TULIA 88 52 80 55 91 / 0 10 10 10 0
PLAINVIEW 90 54 81 58 91 / 0 10 10 10 0
LEVELLAND 89 56 83 59 91 / 0 10 0 0 0
LUBBOCK 92 56 83 60 92 / 0 10 10 0 0
DENVER CITY 89 58 84 58 92 / 0 10 10 0 0
BROWNFIELD 91 58 84 59 92 / 0 10 10 0 0
CHILDRESS 97 57 86 58 91 / 0 10 10 10 10
SPUR 96 58 87 60 94 / 0 10 10 10 0
ASPERMONT 101 62 89 63 97 / 0 10 10 10 10
&&
.LUB WATCHES/WARNINGS/ADVISORIES...
NONE.
&&
$$
31
369
FXUS64 KLUB 200915
AFDLUB
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LUBBOCK TX
415 AM CDT MON MAY 20 2013
.SHORT TERM...
UPPER LOW ACROSS THE NORTHERN AND CENTRAL GREAT PLAINS WILL NOT MAKE
MUCH IF ANY HEADWAY TODAY. THE FIRST IMPULSE ROTATING AROUND THE
BASE OF THIS LOW IS CURRENTLY PRODUCING SOME MID LEVEL CLOUDINESS
ACROSS PORTIONS OF THE EXTREME SOUTHERN PANHANDLE...WHICH WILL
LIFT TO THE NORTHEAST THIS MORNING. AT THE SURFACE...AN AREA OF LOW
PRESSURE WILL DEEPEN ACROSS THE ROLLING PLAINS INTO THE BIG
COUNTRY...ALLOWING THE DRYLINE TO MIX QUICKLY EAST OF THE AREA LATER
THIS MORNING AND EARLY THIS AFTERNOON. BREEZY WINDS WILL BACK
WEST/SOUTHWEST LATER THIS MORNING AND THIS AFTERNOON AS DEEP MIXING
TAKES PLACE AND A DRY AIRMASS ONCE AGAIN DOMINATES THE FAR SOUTHERN
PANHANDLE...SOUTH PLAINS...AND ROLLING PLAINS UNDER CLEAR SKIES.
ANOTHER TOASTY DAY IS THUS ON TAP WITH TEMPERATURES RANGING FROM THE
MID TO UPPER 80S NORTHWEST TO NEAR 100 SOUTHEAST. ELEVATED TO
BRIEFLY CRITICAL FIRE WEATHER CONDITIONS WILL ONCE AGAIN DEVELOP
ACROSS THE AREA. SEE FIRE WEATHER SECTION BELOW.
THE SECOND DISTURBANCE INDUCED BY THE AFOREMENTIONED UPPER LOW WILL
IMPACT THE REGION THIS EVENING AND TONIGHT. WINDS WILL VEER
NORTHERLY AS MID LEVEL CLOUDS MOVE IN FROM THE NORTH. FORECAST
SOUNDINGS DO NOT SUGGEST ENOUGH MOISTENING IN THE LOW LEVELS TO
WARRANT MENTIONABLE RAIN CHANCES AT THIS TIME...BUT WILL LIKELY SEE
SOME VIRGA SHOWERS DEVELOP AND PERHAPS A FEW RUMBLES OF THUNDER. DRY
AIR NEAR THE SURFACE WILL BRING ABOUT THE POSSIBILITY OF LOCALIZED
DOWNBURSTS OR HEAT BURSTS TONIGHT INTO MID-MORNING ON TUESDAY.
&&
.LONG TERM...
NOT MUCH CHANGE IN THE LARGE SCALE EVOLUTION FOR THIS WEEK THOUGH
THERE ARE SOME DETAILS WHICH DESERVE SOME MENTION. MAIN STORM
SYSTEM WILL BE ACROSS THE EASTERN DAKOTAS BY TUESDAY MORNING WITH A
DRAGGING TROUGH INTO EASTERN NEW MEXICO WHICH SHOULD PUSH EAST OFF
THE AREA BY 00Z. BY MID WEEK...RIDGING BUILDS BACK INTO THE CENTRAL
STATES AS PACIFIC NORTHWEST LOW COMES ASHORE. THE HIGH AMPLITUDE
RIDGE THEN KEEPS THE ENERGY BLOCKED ACROSS THE NORTHWESTERN STATES
AND YIELDS PROTRACTED SOUTHWESTERLY FLOW THROUGH THE END OF THE
PERIOD.
THE MUCH ANTICIPATED COLD FRONT SHOULD BE THROUGH THE ENTIRE CWFA BY
DAYBREAK TUESDAY THOUGH ITS EFFECTS ARE NOT AS PRONOUNCED AS EARLIER
PROGS INDICATED. RETURN FLOW SHOULD SET UP BY LATE AFTERNOON AND
THOUGH WHILE THE BULK OF PRECIPITATION WILL BE EAST OF THE
REGION...THERE WILL EXISTS FOR A FEW HIGH BASED VIRGA SHOWERS
DURING THE AFTERNOON WHICH COULD PRODUCE GUSTY SURFACE WINDS. THAT
SAID...PROSPECTS FOR MEASURABLE PRECIPITATION REMAIN BELOW
THRESHOLDS FOR EXPLICIT MENTION IN THE FCST. MORE SUBSTANTIAL LOW
LEVEL MOIST ADVECTION WILL OCCUR TUESDAY NIGHT DRIVING THE DRYLINE
ALL THE WAY TO NEW MEXICO. ONCE AGAIN...WE WILL PROBABLY SEE SOME
HIGH BASED VIRGA SHOWERS ONCE AGAIN. BY THURSDAY...DRYLINE
PROGRESSION WILL BE DAMPENED THUS REMAINING NEAR THE STATE LINE
WITH TSTMS POSSIBLE OVER MUCH OF THE REGION. WITH PW UP IN THE
25MM RANGE WE COULD SEE SOME DECENT RAINFALL AMOUNTS AND HAVE
CONTINUED THE UPWARD TREND ON POPS FOR THU/FRI AND EVEN INTO
SATURDAY THOUGH WE MAY SEE STORMS LIMITED TO THE EASTERN ZONES.
HOWEVER...AS TIME PROGRESSES...WE WILL PROBABLY SEE MORE STORMS
BEGIN TO FIRE ACROSS EASTERN NEW MEXICO LATE THIS WEEKEND WHICH
COULD MOVE INTO THE WEST EACH AFTERNOON.
&&
.FIRE WEATHER...
ELEVATED TO BRIEFLY CRITICAL CONDITIONS WILL DEVELOP THIS
AFTERNOON...WITH THE GREATEST THREAT FOR CONCERN WEST OF A VIGO PARK
TO LITTLEFIELD LINE. THIS IS WHERE WINDS WILL BE HIGHEST AT AROUND
20 MPH AS RELATIVE HUMIDITIES WILL FALL INTO THE SINGLE DIGITS
AREAWIDE. WILL ISSUE A RANGELAND FIRE DANGER STATEMENT GIVEN THE
MARGINAL WIND SPEEDS. THE OTHER AREA OF CONCERN IS SOUTHEAST OF A
LINE FROM GUTHRIE TO JUSTICEBURG AS A WEAKENING LOW LEVEL JET WILL
LINGER INTO THE AFTERNOON. GIVEN THAT THE LLJ WILL MOVE EAST AND
WEAKEN CONSIDERABLY BY PEAK HEATING THIS AFTERNOON AND THE EXTRA
DISTANCE FOR HIGHER MOMENTUM TO MIX TO THE SURFACE OFF THE
CAPROCK...WILL LEAVE THIS AREA OUT OF ANY HIGHLIGHTS TODAY.
ELEVATED TO NEAR CRITICAL FIRE WEATHER CONDITIONS WILL RETURN TO
THE TX/NM STATE LINE COUNTIES ON WEDNESDAY.
&&
.PRELIMINARY POINT TEMPS/POPS...
FRIONA 84 49 77 54 90 / 0 10 10 10 0
TULIA 88 52 80 55 91 / 0 10 10 10 0
PLAINVIEW 90 54 81 58 91 / 0 10 10 10 0
LEVELLAND 89 56 83 59 91 / 0 10 0 0 0
LUBBOCK 92 56 83 60 92 / 0 10 10 0 0
DENVER CITY 89 58 84 58 92 / 0 10 10 0 0
BROWNFIELD 91 58 84 59 92 / 0 10 10 0 0
CHILDRESS 97 57 86 58 91 / 0 10 10 10 10
SPUR 96 58 87 60 94 / 0 10 10 10 0
ASPERMONT 101 62 89 63 97 / 0 10 10 10 10
&&
.LUB WATCHES/WARNINGS/ADVISORIES...
NONE.
&&
$$
31/26
537
FXUS64 KLUB 200434
AFDLUB
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LUBBOCK TX
1134 PM CDT SUN MAY 19 2013
.AVIATION...
LIGHT SURFACE FLOW BOTH KLBB AND KCDS FOR THE NEXT 12 HOURS OR SO
BEHIND A WEAK SURFACE FRONT OR TROUGH THAT WAS SAGGING SOUTHWARD
THROUGH THE AREA. GUSTY WESTERLY WINDS WILL REDEVELOP AT KLBB BY
MIDDAY MONDAY...BUT ARE LESS CERTAIN AT KCDS. MODERATELY STRONG
COLD FRONT WILL MOVE SOUTHWARD MONDAY EVENING. VFR CONTINUING.
RMCQUEEN
&&
.PREV DISCUSSION... /ISSUED 716 PM CDT SUN MAY 19 2013/
AVIATION...
SURFACE LOW PRESSURE TROUGH WILL MAINTAIN VERY DRY DOWNSLOPE
COMPONENT WINDS THROUGH THE EVENING. A VERY WEAK COLD FRONT OVER
THE TEXAS PANHANDLE MAY SAG BRIEFLY INTO KCDS THOUGH PROBABLY NOT
KLBB LATER TONIGHT BEFORE THE DRY WESTERLY BREEZES DEVELOP AGAIN
LATER MONDAY MORNING OR EARLY AFTERNOON. RMCQUEEN
PREV DISCUSSION... /ISSUED 313 PM CDT SUN MAY 19 2013/
SHORT TERM...
THE DRYLINE HAS PUSHED WELL EAST OF THE AREA THIS AFTERNOON LEAVING
WARM TO HOT TEMPERATURES AND DRY AND GUSTY WESTERLY WINDS IN ITS
WAKE ACROSS THE SOUTH PLAINS REGION. THIS IS OCCURRING AS A COMPLEX
UPPER LEVEL STORM SYSTEM IS WINDING UP ACROSS THE CENTRAL AND
NORTHERN HIGH PLAINS WITH SEVERAL EMBEDDED IMPULSES RIDING AROUND
AND UNDER THE LOW FROM THE PACIFIC NORTHWEST THROUGH THE 4-CORNERS
AND ACROSS THE SOUTHERN HIGH PLAINS. THESE MID/UPPER LEVEL RELATIVE
VORTICITY MAXIMA SWINGING BY WILL HAVE LITTLE MOISTURE TO WORK WITH
LOCALLY...SO A DRY FORECAST REMAINS IN PLACE THE NEXT 24 HOURS.
THERE IS SOME CONCERN THAT LIFT WORKING ON THE DRY ATMOSPHERE FROM
ONE OF THESE WAVES COULD BRING A RISK OF MORE HEAT BURST ACTIVITY
ACROSS THE NORTHWESTERN AND NORTH-CENTRAL ZONES LATE TONIGHT /LIKE
WE SAW A COUPLE OF NIGHTS AGO/ BUT IT APPEARS THE MAGNITUDE OF THE
LIFT AND MID-LEVEL MOISTURE WILL BE SUBDUED FROM WHAT WE SAW FRIDAY
NIGHT. THUS...THE THREAT FOR HEAT BURSTS SHOULD BE LOW.
INSTEAD...THE GUSTY WESTERLY WINDS THIS AFTERNOON WILL QUICKLY
SUBSIDE THIS EVENING AND TURN NORTHWESTERLY OR NORTHERLY /BUT LIGHT/
LATE TONIGHT AS A SFC TROUGH SAGS THROUGH. LIGHT WINDS...DRY AIR AND
MOSTLY CLEAR TO CLEAR SKIES WILL PROVIDE A PLEASANTLY COOL NIGHT
WITH LOWS BY MORNING RANGING FROM THE LOWER 50S ACROSS THE NW ZONES
TO MID-60S SOUTHEAST...WHERE LOW-LEVEL MOISTURE MAY BRIEFLY RETURN.
MONDAY MORNING SHOULD BE PLEASANT...BUT GUSTY WESTERLY TO
SOUTHWESTERLY WINDS WILL DEVELOP DURING THE AFTERNOON AS THE MORNING
BOUNDARY MIXES OUT AND WE TAP HIGHER MOMENTUM AIR ALOFT. IT DOES
APPEAR THE WIND FIELDS WILL BE SLIGHTLY WEAKER THAN TODAY...THOUGH
COUPLED WITH ANOTHER WARM AND DRY DAY...WE WILL SEE ANOTHER BOUT OF
ELEVATED TO BRIEFLY CRITICAL FIRE WEATHER. HIGHS ON MONDAY WILL VARY
FROM THE LOWER TO MIDDLE 80S NEAR FRIONA TO AROUND THE TRIPLE DIGIT
MARK IN ASPERMONT.
LONG TERM...
INTI AL PART OF THE LONG TERM PERIOD LIKELY TO BE DRY...BUT WILL
HAVE TO WATCH POTENTIAL FOR SOME PRECIP SKIRTING ACROSS THE NERN
ZONES...THE BEST CHANCE POSSIBLY COMING MONDAY NIGHT WHEN AN UPPER
SHORT WAVE TROUGH MOVES ONTO THE HIGH PLAINS WITH POSSIBLE
CONVECTIVE INITIATION SWRN KS TO NWRN PANHANDLE THEN MOVING ESEWD.
NOT SOLD ON PRECIP EITHER DEVELOPING OR MAKING IT INTO THE FCST
AREA IF IT DOES...AND WILL KEEP POPS BELOW MENTION ATTM. SOME HIGH
TERRAIN CONVECTION POSSIBLE AGAIN TUESDAY BUT WITH LESS UPPER
SUPPORT MAKING POPS EVEN LESS LIKELY FOR THE FCST AREA. WILL GET
SOME RELIEF WITH TEMPS AS A COLD FRONT STILL PROGGED TO MOVE
THROUGH THE FCST AREA EARLY TUESDAY AND ENOUGH COLD ADVECTION TO
LOWER HIGH TEMPS NEAR OR JUST BELOW SEASONAL NORMS.
LATTER HALF OF THE WEEK INTO THE WEEKEND STILL WITH SLIGHT CHC TO
CHANCE POPS AS ALTHOUGH UPPER RIDGING MOVES OVERHEAD...POTENTIAL
EXISTS FOR IT TO OF THE DIRTY VARIETY WITH LOW LEVEL MOISTURE
PULLED BACK INTO THE AREA...MID TO UPPER LEVEL MOISTURE POSSIBLY
ARRIVING FROM THE PACIFIC...AND A SLOSHING DRYLINE. THURSDAY NOW
LOOKING LIKE IT HAS AS MUCH POTENTIAL AS FRIDAY AND WILL NUDGE
THOSE POPS UP SIMILAR TO WHERE FRIDAYS ARE.
FIRE WEATHER...
GUSTY...DRY AND WARM TO HOT SOUTHWESTERLY TO WESTERLY WINDS WEST OF
THE DRYLINE WERE RESULTING IN ELEVATED TO CRITICAL FIRE WEATHER
CONDITIONS ACROSS THE ENTIRE AREA THIS AFTERNOON. THE STRONGEST
WINDS TO THIS POINT HAVE BEEN CENTERED ACROSS THE CENTRAL ZONES WHERE
MANY RED FLAG MINUTES HAVE ALREADY BEEN TALLIED. HOWEVER...THIS
CORRIDOR OF STRONG WINDS HAS BEEN WEAKENING A BIT AS OF LATE WITH
ANOTHER CORRIDOR OF SOMEWHAT ENHANCED WINDS EXPECTED TO AFFECT THE
NORTHWESTERN ZONES THROUGH EARLY THIS EVENING. THUS...THE CURRENT
RED FLAG WARNING AND FIRE DANGER STATEMENT REMAIN VALID. WINDS WILL
QUICKLY DIMINISH AROUND SUNSET EASING THE FIRE DANGER.
HOWEVER...OVERNIGHT RH RECOVERIES WILL BE POOR. WINDS WILL REMAIN
LIGHT THOUGH SOMEWHAT VARIABLE IN DIRECTION THROUGH MONDAY MORNING
BEFORE GUSTY SOUTHWEST TO WESTERLY WINDS RETURN MONDAY AFTERNOON.
THE MAGNITUDE OF THE WINDS SHOULD BE A LITTLE LOWER THAN TODAY ON
MONDAY...BUT WITH HUMIDITIES AGAIN FALLING TO AND BELOW 10
PERCENT...IT LOOKS LIKE ANOTHER BOUT OF ELEVATED TO BRIEFLY CRITICAL
FIRE WEATHER FOR MUCH OR ALL OF THE FA. THE EXCEPTION TO THIS COULD
BE ACROSS THE SOUTHEAST TEXAS PANHANDLE WHERE WINDS MAY REMAIN LIGHT
ALL DAY.
&&
.PRELIMINARY POINT TEMPS/POPS...
FRIONA 52 83 51 79 50 / 0 0 10 0 10
TULIA 53 87 54 80 55 / 0 0 10 0 10
PLAINVIEW 55 89 56 80 57 / 0 0 10 0 10
LEVELLAND 55 91 56 81 57 / 0 0 0 0 0
LUBBOCK 57 93 55 84 58 / 0 0 10 10 0
DENVER CITY 57 91 54 83 58 / 0 0 0 10 0
BROWNFIELD 57 93 56 83 59 / 0 0 0 10 0
CHILDRESS 61 94 56 85 57 / 0 0 10 10 10
SPUR 60 98 60 84 60 / 0 0 10 10 0
ASPERMONT 65 101 63 89 62 / 0 0 10 10 0
&&
.LUB WATCHES/WARNINGS/ADVISORIES...
NONE.
&&
$$
99/99/05
265
FXUS64 KLUB 200016
AFDLUB
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LUBBOCK TX
716 PM CDT SUN MAY 19 2013
.AVIATION...
SURFACE LOW PRESSURE TROUGH WILL MAINTAIN VERY DRY DOWNSLOPE
COMPONENT WINDS THROUGH THE EVENING. A VERY WEAK COLD FRONT OVER
THE TEXAS PANHANDLE MAY SAG BRIEFLY INTO KCDS THOUGH PROBABLY NOT
KLBB LATER TONIGHT BEFORE THE DRY WESTERLY BREEZES DEVELOP AGAIN
LATER MONDAY MORNING OR EARLY AFTERNOON. RMCQUEEN
&&
.PREV DISCUSSION... /ISSUED 313 PM CDT SUN MAY 19 2013/
SHORT TERM...
THE DRYLINE HAS PUSHED WELL EAST OF THE AREA THIS AFTERNOON LEAVING
WARM TO HOT TEMPERATURES AND DRY AND GUSTY WESTERLY WINDS IN ITS
WAKE ACROSS THE SOUTH PLAINS REGION. THIS IS OCCURRING AS A COMPLEX
UPPER LEVEL STORM SYSTEM IS WINDING UP ACROSS THE CENTRAL AND
NORTHERN HIGH PLAINS WITH SEVERAL EMBEDDED IMPULSES RIDING AROUND
AND UNDER THE LOW FROM THE PACIFIC NORTHWEST THROUGH THE 4-CORNERS
AND ACROSS THE SOUTHERN HIGH PLAINS. THESE MID/UPPER LEVEL RELATIVE
VORTICITY MAXIMA SWINGING BY WILL HAVE LITTLE MOISTURE TO WORK WITH
LOCALLY...SO A DRY FORECAST REMAINS IN PLACE THE NEXT 24 HOURS.
THERE IS SOME CONCERN THAT LIFT WORKING ON THE DRY ATMOSPHERE FROM
ONE OF THESE WAVES COULD BRING A RISK OF MORE HEAT BURST ACTIVITY
ACROSS THE NORTHWESTERN AND NORTH-CENTRAL ZONES LATE TONIGHT /LIKE
WE SAW A COUPLE OF NIGHTS AGO/ BUT IT APPEARS THE MAGNITUDE OF THE
LIFT AND MID-LEVEL MOISTURE WILL BE SUBDUED FROM WHAT WE SAW FRIDAY
NIGHT. THUS...THE THREAT FOR HEAT BURSTS SHOULD BE LOW.
INSTEAD...THE GUSTY WESTERLY WINDS THIS AFTERNOON WILL QUICKLY
SUBSIDE THIS EVENING AND TURN NORTHWESTERLY OR NORTHERLY /BUT LIGHT/
LATE TONIGHT AS A SFC TROUGH SAGS THROUGH. LIGHT WINDS...DRY AIR AND
MOSTLY CLEAR TO CLEAR SKIES WILL PROVIDE A PLEASANTLY COOL NIGHT
WITH LOWS BY MORNING RANGING FROM THE LOWER 50S ACROSS THE NW ZONES
TO MID-60S SOUTHEAST...WHERE LOW-LEVEL MOISTURE MAY BRIEFLY RETURN.
MONDAY MORNING SHOULD BE PLEASANT...BUT GUSTY WESTERLY TO
SOUTHWESTERLY WINDS WILL DEVELOP DURING THE AFTERNOON AS THE MORNING
BOUNDARY MIXES OUT AND WE TAP HIGHER MOMENTUM AIR ALOFT. IT DOES
APPEAR THE WIND FIELDS WILL BE SLIGHTLY WEAKER THAN TODAY...THOUGH
COUPLED WITH ANOTHER WARM AND DRY DAY...WE WILL SEE ANOTHER BOUT OF
ELEVATED TO BRIEFLY CRITICAL FIRE WEATHER. HIGHS ON MONDAY WILL VARY
FROM THE LOWER TO MIDDLE 80S NEAR FRIONA TO AROUND THE TRIPLE DIGIT
MARK IN ASPERMONT.
LONG TERM...
INTI AL PART OF THE LONG TERM PERIOD LIKELY TO BE DRY...BUT WILL
HAVE TO WATCH POTENTIAL FOR SOME PRECIP SKIRTING ACROSS THE NERN
ZONES...THE BEST CHANCE POSSIBLY COMING MONDAY NIGHT WHEN AN UPPER
SHORT WAVE TROUGH MOVES ONTO THE HIGH PLAINS WITH POSSIBLE
CONVECTIVE INITIATION SWRN KS TO NWRN PANHANDLE THEN MOVING ESEWD.
NOT SOLD ON PRECIP EITHER DEVELOPING OR MAKING IT INTO THE FCST
AREA IF IT DOES...AND WILL KEEP POPS BELOW MENTION ATTM. SOME HIGH
TERRAIN CONVECTION POSSIBLE AGAIN TUESDAY BUT WITH LESS UPPER
SUPPORT MAKING POPS EVEN LESS LIKELY FOR THE FCST AREA. WILL GET
SOME RELIEF WITH TEMPS AS A COLD FRONT STILL PROGGED TO MOVE
THROUGH THE FCST AREA EARLY TUESDAY AND ENOUGH COLD ADVECTION TO
LOWER HIGH TEMPS NEAR OR JUST BELOW SEASONAL NORMS.
LATTER HALF OF THE WEEK INTO THE WEEKEND STILL WITH SLIGHT CHC TO
CHANCE POPS AS ALTHOUGH UPPER RIDGING MOVES OVERHEAD...POTENTIAL
EXISTS FOR IT TO OF THE DIRTY VARIETY WITH LOW LEVEL MOISTURE
PULLED BACK INTO THE AREA...MID TO UPPER LEVEL MOISTURE POSSIBLY
ARRIVING FROM THE PACIFIC...AND A SLOSHING DRYLINE. THURSDAY NOW
LOOKING LIKE IT HAS AS MUCH POTENTIAL AS FRIDAY AND WILL NUDGE
THOSE POPS UP SIMILAR TO WHERE FRIDAYS ARE.
FIRE WEATHER...
GUSTY...DRY AND WARM TO HOT SOUTHWESTERLY TO WESTERLY WINDS WEST OF
THE DRYLINE WERE RESULTING IN ELEVATED TO CRITICAL FIRE WEATHER
CONDITIONS ACROSS THE ENTIRE AREA THIS AFTERNOON. THE STRONGEST
WINDS TO THIS POINT HAVE BEEN CENTERED ACROSS THE CENTRAL ZONES WHERE
MANY RED FLAG MINUTES HAVE ALREADY BEEN TALLIED. HOWEVER...THIS
CORRIDOR OF STRONG WINDS HAS BEEN WEAKENING A BIT AS OF LATE WITH
ANOTHER CORRIDOR OF SOMEWHAT ENHANCED WINDS EXPECTED TO AFFECT THE
NORTHWESTERN ZONES THROUGH EARLY THIS EVENING. THUS...THE CURRENT
RED FLAG WARNING AND FIRE DANGER STATEMENT REMAIN VALID. WINDS WILL
QUICKLY DIMINISH AROUND SUNSET EASING THE FIRE DANGER.
HOWEVER...OVERNIGHT RH RECOVERIES WILL BE POOR. WINDS WILL REMAIN
LIGHT THOUGH SOMEWHAT VARIABLE IN DIRECTION THROUGH MONDAY MORNING
BEFORE GUSTY SOUTHWEST TO WESTERLY WINDS RETURN MONDAY AFTERNOON.
THE MAGNITUDE OF THE WINDS SHOULD BE A LITTLE LOWER THAN TODAY ON
MONDAY...BUT WITH HUMIDITIES AGAIN FALLING TO AND BELOW 10
PERCENT...IT LOOKS LIKE ANOTHER BOUT OF ELEVATED TO BRIEFLY CRITICAL
FIRE WEATHER FOR MUCH OR ALL OF THE FA. THE EXCEPTION TO THIS COULD
BE ACROSS THE SOUTHEAST TEXAS PANHANDLE WHERE WINDS MAY REMAIN LIGHT
ALL DAY.
&&
.PRELIMINARY POINT TEMPS/POPS...
FRIONA 52 83 51 79 50 / 0 0 10 0 10
TULIA 53 87 54 80 55 / 0 0 10 0 10
PLAINVIEW 55 89 56 80 57 / 0 0 10 0 10
LEVELLAND 55 91 56 81 57 / 0 0 0 0 0
LUBBOCK 57 93 55 84 58 / 0 0 10 10 0
DENVER CITY 57 91 54 83 58 / 0 0 0 10 0
BROWNFIELD 57 93 56 83 59 / 0 0 0 10 0
CHILDRESS 61 94 56 85 57 / 0 0 10 10 10
SPUR 60 98 60 84 60 / 0 0 10 10 0
ASPERMONT 65 101 63 89 62 / 0 0 10 10 0
&&
.LUB WATCHES/WARNINGS/ADVISORIES...
RED FLAG WARNING UNTIL 9 PM CDT THIS EVENING FOR THE FOLLOWING
ZONES: TXZ021>024-027>030.
&&
$$
99/99/05
696
FXUS64 KLUB 192013
AFDLUB
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LUBBOCK TX
313 PM CDT SUN MAY 19 2013
.SHORT TERM...
THE DRYLINE HAS PUSHED WELL EAST OF THE AREA THIS AFTERNOON LEAVING
WARM TO HOT TEMPERATURES AND DRY AND GUSTY WESTERLY WINDS IN ITS
WAKE ACROSS THE SOUTH PLAINS REGION. THIS IS OCCURRING AS A COMPLEX
UPPER LEVEL STORM SYSTEM IS WINDING UP ACROSS THE CENTRAL AND
NORTHERN HIGH PLAINS WITH SEVERAL EMBEDDED IMPULSES RIDING AROUND
AND UNDER THE LOW FROM THE PACIFIC NORTHWEST THROUGH THE 4-CORNERS
AND ACROSS THE SOUTHERN HIGH PLAINS. THESE MID/UPPER LEVEL RELATIVE
VORTICITY MAXIMA SWINGING BY WILL HAVE LITTLE MOISTURE TO WORK WITH
LOCALLY...SO A DRY FORECAST REMAINS IN PLACE THE NEXT 24 HOURS.
THERE IS SOME CONCERN THAT LIFT WORKING ON THE DRY ATMOSPHERE FROM
ONE OF THESE WAVES COULD BRING A RISK OF MORE HEAT BURST ACTIVITY
ACROSS THE NORTHWESTERN AND NORTH-CENTRAL ZONES LATE TONIGHT /LIKE
WE SAW A COUPLE OF NIGHTS AGO/ BUT IT APPEARS THE MAGNITUDE OF THE
LIFT AND MID-LEVEL MOISTURE WILL BE SUBDUED FROM WHAT WE SAW FRIDAY
NIGHT. THUS...THE THREAT FOR HEAT BURSTS SHOULD BE LOW.
INSTEAD...THE GUSTY WESTERLY WINDS THIS AFTERNOON WILL QUICKLY
SUBSIDE THIS EVENING AND TURN NORTHWESTERLY OR NORTHERLY /BUT LIGHT/
LATE TONIGHT AS A SFC TROUGH SAGS THROUGH. LIGHT WINDS...DRY AIR AND
MOSTLY CLEAR TO CLEAR SKIES WILL PROVIDE A PLEASANTLY COOL NIGHT
WITH LOWS BY MORNING RANGING FROM THE LOWER 50S ACROSS THE NW ZONES
TO MID-60S SOUTHEAST...WHERE LOW-LEVEL MOISTURE MAY BRIEFLY RETURN.
MONDAY MORNING SHOULD BE PLEASANT...BUT GUSTY WESTERLY TO
SOUTHWESTERLY WINDS WILL DEVELOP DURING THE AFTERNOON AS THE MORNING
BOUNDARY MIXES OUT AND WE TAP HIGHER MOMENTUM AIR ALOFT. IT DOES
APPEAR THE WIND FIELDS WILL BE SLIGHTLY WEAKER THAN TODAY...THOUGH
COUPLED WITH ANOTHER WARM AND DRY DAY...WE WILL SEE ANOTHER BOUT OF
ELEVATED TO BRIEFLY CRITICAL FIRE WEATHER. HIGHS ON MONDAY WILL VARY
FROM THE LOWER TO MIDDLE 80S NEAR FRIONA TO AROUND THE TRIPLE DIGIT
MARK IN ASPERMONT.
&&
.LONG TERM...
INTIAL PART OF THE LONG TERM PERIOD LIKELY TO BE DRY...BUT WILL
HAVE TO WATCH POTENTIAL FOR SOME PRECIP SKIRTING ACROSS THE NERN
ZONES...THE BEST CHANCE POSSIBLY COMING MONDAY NIGHT WHEN AN UPPER
SHORT WAVE TROUGH MOVES ONTO THE HIGH PLAINS WITH POSSIBLE
CONVECTIVE INITIATION SWRN KS TO NWRN PANHANDLE THEN MOVING ESEWD.
NOT SOLD ON PRECIP EITHER DEVELOPING OR MAKING IT INTO THE FCST
AREA IF IT DOES...AND WILL KEEP POPS BELOW MENTION ATTM. SOME HIGH
TERRAIN CONVECTION POSSIBLE AGAIN TUESDAY BUT WITH LESS UPPER
SUPPORT MAKING POPS EVEN LESS LIKELY FOR THE FCST AREA. WILL GET
SOME RELIEF WITH TEMPS AS A COLD FRONT STILL PROGGED TO MOVE
THROUGH THE FCST AREA EARLY TUESDAY AND ENOUGH COLD ADVECTION TO
LOWER HIGH TEMPS NEAR OR JUST BELOW SEASONAL NORMS.
LATTER HALF OF THE WEEK INTO THE WEEKEND STILL WITH SLIGHT CHC TO
CHANCE POPS AS ALTHOUGH UPPER RIDGING MOVES OVERHEAD...POTENTIAL
EXISTS FOR IT TO OF THE DIRTY VARIETY WITH LOW LEVEL MOISTURE
PULLED BACK INTO THE AREA...MID TO UPPER LEVEL MOISTURE POSSIBLY
ARRIVING FROM THE PACIFIC...AND A SLOSHING DRYLINE. THURSDAY NOW
LOOKING LIKE IT HAS AS MUCH POTENTIAL AS FRIDAY AND WILL NUDGE
THOSE POPS UP SIMILAR TO WHERE FRIDAYS ARE.
&&
.FIRE WEATHER...
GUSTY...DRY AND WARM TO HOT SOUTHWESTERLY TO WESTERLY WINDS WEST OF
THE DRYLINE WERE RESULTING IN ELEVATED TO CRITICAL FIRE WEATHER
CONDITIONS ACROSS THE ENTIRE AREA THIS AFTERNOON. THE STRONGEST
WINDS TO THIS POINT HAVE BEEN CENTERED ACROSS THE CENTRAL ZONES WHERE
MANY RED FLAG MINUTES HAVE ALREADY BEEN TALLIED. HOWEVER...THIS
CORRIDOR OF STRONG WINDS HAS BEEN WEAKENING A BIT AS OF LATE WITH
ANOTHER CORRIDOR OF SOMEWHAT ENHANCED WINDS EXPECTED TO AFFECT THE
NORTHWESTERN ZONES THROUGH EARLY THIS EVENING. THUS...THE CURRENT
RED FLAG WARNING AND FIRE DANGER STATEMENT REMAIN VALID. WINDS WILL
QUICKLY DIMINISH AROUND SUNSET EASING THE FIRE DANGER.
HOWEVER...OVERNIGHT RH RECOVERIES WILL BE POOR. WINDS WILL REMAIN
LIGHT THOUGH SOMEWHAT VARIABLE IN DIRECTION THROUGH MONDAY MORNING
BEFORE GUSTY SOUTHWEST TO WESTERLY WINDS RETURN MONDAY AFTERNOON.
THE MAGNITUDE OF THE WINDS SHOULD BE A LITTLE LOWER THAN TODAY ON
MONDAY...BUT WITH HUMIDITIES AGAIN FALLING TO AND BELOW 10
PERCENT...IT LOOKS LIKE ANOTHER BOUT OF ELEVATED TO BRIEFLY CRITICAL
FIRE WEATHER FOR MUCH OR ALL OF THE FA. THE EXCEPTION TO THIS COULD
BE ACROSS THE SOUTHEAST TEXAS PANHANDLE WHERE WINDS MAY REMAIN LIGHT
ALL DAY.
&&
.PRELIMINARY POINT TEMPS/POPS...
FRIONA 52 83 51 79 50 / 0 0 10 0 10
TULIA 53 87 54 80 55 / 0 0 10 0 10
PLAINVIEW 55 89 56 80 57 / 0 0 10 0 10
LEVELLAND 55 91 56 81 57 / 0 0 0 0 0
LUBBOCK 56 93 55 84 58 / 0 0 10 10 0
DENVER CITY 57 91 54 83 58 / 0 0 0 10 0
BROWNFIELD 57 93 56 83 59 / 0 0 0 10 0
CHILDRESS 61 94 56 85 57 / 0 0 10 10 10
SPUR 60 98 60 84 60 / 0 0 10 10 0
ASPERMONT 65 101 63 89 62 / 0 0 10 10 0
&&
.LUB WATCHES/WARNINGS/ADVISORIES...
RED FLAG WARNING UNTIL 9 PM CDT THIS EVENING FOR THE FOLLOWING
ZONES: TXZ021>024-027>030.
&&
$$
23/07
554
FXUS64 KLUB 191729
AFDLUB
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LUBBOCK TX
1229 PM CDT SUN MAY 19 2013
.AVIATION...
BREEZY WESTERLY WINDS WILL CONTINUE THROUGH AROUND SUNSET. A WEAK
BOUNDARY WILL THEN MOVE THROUGH TONIGHT WITH LIGHT NORTHWEST TO
NORTHERLY WINDS AT THE TERMINALS THROUGH EARLY MONDAY. VFR WILL
PREVAIL.
&&
.PREV DISCUSSION... /ISSUED 1129 AM CDT SUN MAY 19 2013/
UPDATE...
MOISTURE THAT BRIEFLY INVADED THE SOUTHEAST PORTION OF THE CWA
EARLY THIS MORNING HAS QUICKLY MIXED/ADVECTED EASTWARD LEAVING
DRY...WARM AND GUSTY DOWNSLOPE BREEZES IN ITS WAKE. HUMIDITY
LEVELS HAVE ALREADY PLUNGED TO 15 PERCENT OR LOWER ACROSS MUCH OF
THE FA...AND THEY WILL CONTINUE TO TUMBLE INTO THE SINGLE DIGITS
THIS AFTERNOON. THESE CONDITIONS COUPLED WITH THE WESTERLY WINDS
SUSTAINED AT 15-25+ MPH WILL CREATE ELEVATED TO CRITICAL FIRE
WEATHER CONDITIONS ACROSS THE ENTIRE AREA. THE STRONGEST LOWER
TROPOSPHERIC WIND FIELDS SHOULD BE CONFINED TO THE SOUTHWEST
PANHANDLE AND NORTHWEST SOUTH PLAINS...WHERE A RED FLAG WARNING IS
IN EFFECT THROUGH 02Z. ELSEWHERE...WINDS SHOULD BE A LITTLE
LIGHTER...BUT STILL HIGH ENOUGH TO PRODUCE ELEVATED TO BRIEFLY
CRITICAL FIRE WEATHER THROUGH SUNSET. ONGOING FORECAST HAS A GOOD
HANDLE ON THIS...THOUGH DID OPT TO EXPAND THE FIRE DANGER
STATEMENT TO INCLUDE THE ENTIRE FA NOT ENCOMPASSED BY THE RED FLAG
WARNING. NO OTHER CHANGES WERE MADE TO THE FORECAST AT THIS POINT.
PREV DISCUSSION... /ISSUED 403 AM CDT SUN MAY 19 2013/
SHORT TERM...
SOUTHERN EXTENT OF UPPER LOW MOVING INTO THE HIGH PLAINS WILL SLIDE
ACROSS WEST TEXAS TODAY...ALLOWING FOR LOWER HEIGHTS ALOFT AND
SLIGHTLY COOLER TEMPERATURES WHEN COMPARED TO THE LAST TWO DAYS.
BREEZY DOWNSLOPE WINDS WILL STILL ALLOW FOR TEMPERATURES TO WARM
ABOVE NORMAL IN THE MID 80S TO MID 90S ON THE CAPROCK AND UPPER 90S
TO NEAR 100 EAST OF THE ESCARPMENT. A SURFACE LOW WILL SLIDE SOUTH
NEAR THE FAR SOUTHEAST PANHANDLE KEEPING THE DRYLINE EAST OF THE
ROLLING PLAINS AND DRY CONDITIONS IN PLACE ACROSS THE ENTIRE AREA.
ELEVATED TO CRITICAL FIRE WEATHER CONCERNS WILL BE SEEN AREAWIDE
WITH THE GREATEST THREAT FOR RED FLAG MINUTES ACROSS THE NORTHWEST.
PLEASE SEE FIRE WEATHER SECTION FOR DETAILS.
AFOREMENTIONED SURFACE LOW WILL CONTINUE MAKING A SLOW PUSH SOUTH
TONIGHT...VEERING WINDS TO THE NORTHWEST AS A WEAK FRONT PUSHES INTO
THE SOUTH PLAINS. NOT EXPECTING ANY IMPACTS IN TERMS OF AIRMASS
MODIFICATION OR WIND AS PRESSURE GRADIENT WILL WEAKEN UPON ITS
APPROACH. WINDS WILL BACK TOWARD THE WEST AND SOUTHWEST QUICKLY
MONDAY MORNING AS THIS FEATURE LIFTS BACK NORTH.
LONG TERM...
POTENT UPPER LEVEL STORM SYSTEM IS EXPECTED TO BE NORTH OF US ACROSS
NRN NE AND SRN SD BY MONDAY MORNING WITH A TROUGH AXIS ROTATING
AROUND THE FEATURE BACK INTO THE DESERT SOUTHWEST. LOW WILL ONLY
SLOWLY MOVE EASTWARD YIELDING A PROTRACTED PERIOD OF SEVERE WEATHER
ACROSS THE HEARTLAND. WE MAY SEE ANOTHER DAY OF ELEVATED TO
CRITICAL FIRE WEATHER OUT WEST ON MONDAY BUT INTENSITY OF
CONDITIONS APPEARS TO BE WANING OVER WHAT WE HAVE SEEN THIS
WEEKEND WITH NO KNOWN STARTS. NORTHWEST FLOW WILL RETURN INTO OUR
AREA BY TUESDAY AFTERNOON AS RIDGING BUILDS INTO OUR AREA AHEAD OF
NEXT STORM SYSTEM COMING ASHORE THE PACIFIC NORTHWEST. BY
THURSDAY...RIDGE WILL EXTEND ALL THE WAY FROM MEXICO TO ALASKA AND
SERVE TO BLOCK THE AFOREMENTIONED PACIFIC STORM LEAVING WEST TEXAS
IN PERSISTENT SOUTHWESTERLY FLOW. FORTUNATELY...THIS RIDGE WILL
BE OF THE DIRTY PERSUASION PROVIDING SEVERAL DAYS LATE THIS WEEK
WITH RAINFALL CHANCES.
DRYLINE WILL LARGELY STAY OUT EAST OR BEYOND THROUGH LATE WEDNESDAY
THOUGH WE WILL SEE A COLD FRONT MOVE IN MONDAY NIGHT GIVING A BIT OF
RELIEF OF THE TOASTY TEMPERATURES SEEN OVER THE PAST FEW DAYS. ALL
INDICATIONS CONTINUE TO POINT TO A DRY FROPA BUT TEMPERATURES WILL
BE KNOCKED BACK INTO THE 80S FOR MANY LOCATIONS. BY WEDNESDAY NIGHT
HONEST MOISTURE RETURN GETS UNDERWAY WITH DEWPOINTS IN THE UPPER 50S
TO LOW 60S FOR THE REMAINDER OF THE EXTENDED WITH THE DRYLINE
REMAINING TO OUR WEST THROUGH DAY 10. FRIDAY LOOKS TO BE THE BEST
OPPORTUNITY FOR WIDESPREAD RAIN AND HAVE BUMPED POPS INTO THE CHANCE
CATEGORY AS A SLUG OF BOTH PACIFIC AND GULF MOISTURE CONVERGE OVER
THE AREA.
FIRE WEATHER...
CRITICAL FIRE WEATHER CONDITIONS ARE EXPECTED THIS AFTERNOON WEST OF
A QUITAQUE TO LAKEVIEW LINE...WHILE ELEVATED TO BRIEFLY CRITICAL
CONDITIONS WILL TAKE PLACE TO THE SOUTH AND EAST. DRY AIR WILL
OVERSPREAD THE ENTIRE FORECAST AREA TODAY...PRODUCING RELATIVE
HUMIDITIES IN THE SINGLE DIGITS. WINDS WILL BE THE QUESTION MARK AS
HIGHEST WIND MAXIMUM WILL RIDE ACROSS THE EXTREME SOUTHERN PANHANDLE
AND NORTHERN SOUTH/ROLLING PLAINS. WILL ISSUE A RANGELAND FIRE
DANGER STATEMENT FOR AREAS NORTHWEST OF A CHILDRESS TO MATADOR LINE
AS MARGINAL WINDS ALOFT HAVE A LONGER DISTANCE TO MIX DOWN TO THE
SURFACE. WILL ALSO ISSUE AN RFD FOR COCHRAN THROUGH LUBBOCK COUNTIES
AS WIND MAXIMUM WILL LIKELY PRODUCE ELEVATED TO BRIEFLY CRITICAL
CONCERNS.
ELEVATED TO CRITICAL FIRE WEATHER CONCERNS ARE EXPECTED AGAIN ON
MONDAY WITH SUB 10 PCT RH VALUES. THE GREATEST CONCERN WILL
GENERALLY BE WEST OF THE CAPROCK ESCARPMENT.
&&
.PRELIMINARY POINT TEMPS/POPS...
FRIONA 55 83 51 78 53 / 0 0 0 0 0
TULIA 56 88 55 79 55 / 0 0 0 0 0
PLAINVIEW 57 90 55 82 57 / 0 0 0 0 0
LEVELLAND 57 90 56 85 58 / 0 0 0 0 0
LUBBOCK 58 92 57 85 59 / 0 0 0 0 0
DENVER CITY 61 90 56 86 58 / 0 0 0 0 0
BROWNFIELD 60 92 55 86 59 / 0 0 0 0 0
CHILDRESS 60 95 60 83 61 / 0 0 0 0 0
SPUR 63 96 61 86 61 / 0 0 0 0 0
ASPERMONT 65 100 66 88 64 / 0 0 0 0 0
&&
.LUB WATCHES/WARNINGS/ADVISORIES...
RED FLAG WARNING UNTIL 9 PM CDT THIS EVENING FOR THE FOLLOWING
ZONES: TXZ021>024-027>030.
&&
$$
23/07/23
118
FXUS64 KLUB 191629 AAA
AFDLUB
AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE LUBBOCK TX
1129 AM CDT SUN MAY 19 2013
.UPDATE...
MOISTURE THAT BRIEFLY INVADED THE SOUTHEAST PORTION OF THE CWA
EARLY THIS MORNING HAS QUICKLY MIXED/ADVECTED EASTWARD LEAVING
DRY...WARM AND GUSTY DOWNSLOPE BREEZES IN ITS WAKE. HUMIDITY
LEVELS HAVE ALREADY PLUNGED TO 15 PERCENT OR LOWER ACROSS MUCH OF
THE FA...AND THEY WILL CONTINUE TO TUMBLE INTO THE SINGLE DIGITS
THIS AFTERNOON. THESE CONDITIONS COUPLED WITH THE WESTERLY WINDS
SUSTAINED AT 15-25+ MPH WILL CREATE ELEVATED TO CRITICAL FIRE
WEATHER CONDITIONS ACROSS THE ENTIRE AREA. THE STRONGEST LOWER
TROPOSPHERIC WIND FIELDS SHOULD BE CONFINED TO THE SOUTHWEST
PANHANDLE AND NORTHWEST SOUTH PLAINS...WHERE A RED FLAG WARNING IS
IN EFFECT THROUGH 02Z. ELSEWHERE...WINDS SHOULD BE A LITTLE
LIGHTER...BUT STILL HIGH ENOUGH TO PRODUCE ELEVATED TO BRIEFLY
CRITICAL FIRE WEATHER THROUGH SUNSET. ONGOING FORECAST HAS A GOOD
HANDLE ON THIS...THOUGH DID OPT TO EXPAND THE FIRE DANGER
STATEMENT TO INCLUDE THE ENTIRE FA NOT ENCOMPASSED BY THE RED FLAG
WARNING. NO OTHER CHANGES WERE MADE TO THE FORECAST AT THIS POINT.
&&
.PREV DISCUSSION... /ISSUED 606 AM CDT SUN MAY 19 2013/
AVIATION...
VFR CONDITIONS THROUGH THE PERIOD. WEST WINDS WILL INCREASE TO
NEAR 20 KNOTS WITH GUSTS TO 25-30 KNOTS BY MID TO LATE MORNING AS
A HOT AND DRY AIRMASS REMAINS IN PLACE. WINDS WILL FALL TO NEAR 10
KNOTS AFTER SUNSET WITH A FEW MID CLOUDS MOVING IN AROUND FL120.
PREV DISCUSSION... /ISSUED 403 AM CDT SUN MAY 19 2013/
SHORT TERM...
SOUTHERN EXTENT OF UPPER LOW MOVING INTO THE HIGH PLAINS WILL SLIDE
ACROSS WEST TEXAS TODAY...ALLOWING FOR LOWER HEIGHTS ALOFT AND
SLIGHTLY COOLER TEMPERATURES WHEN COMPARED TO THE LAST TWO DAYS.
BREEZY DOWNSLOPE WINDS WILL STILL ALLOW FOR TEMPERATURES TO WARM
ABOVE NORMAL IN THE MID 80S TO MID 90S ON THE CAPROCK AND UPPER 90S
TO NEAR 100 EAST OF THE ESCARPMENT. A SURFACE LOW WILL SLIDE SOUTH
NEAR THE FAR SOUTHEAST PANHANDLE KEEPING THE DRYLINE EAST OF THE
ROLLING PLAINS AND DRY CONDITIONS IN PLACE ACROSS THE ENTIRE AREA.
ELEVATED TO CRITICAL FIRE WEATHER CONCERNS WILL BE SEEN AREAWIDE
WITH THE GREATEST THREAT FOR RED FLAG MINUTES ACROSS THE NORTHWEST.
PLEASE SEE FIRE WEATHER SECTION FOR DETAILS.
AFOREMENTIONED SURFACE LOW WILL CONTINUE MAKING A SLOW PUSH SOUTH
TONIGHT...VEERING WINDS TO THE NORTHWEST AS A WEAK FRONT PUSHES INTO
THE SOUTH PLAINS. NOT EXPECTING ANY IMPACTS IN TERMS OF AIRMASS
MODIFICATION OR WIND AS PRESSURE GRADIENT WILL WEAKEN UPON ITS
APPROACH. WINDS WILL BACK TOWARD THE WEST AND SOUTHWEST QUICKLY
MONDAY MORNING AS THIS FEATURE LIFTS BACK NORTH.
LONG TERM...
POTENT UPPER LEVEL STORM SYSTEM IS EXPECTED TO BE NORTH OF US ACROSS
NRN NE AND SRN SD BY MONDAY MORNING WITH A TROUGH AXIS ROTATING
AROUND THE FEATURE BACK INTO THE DESERT SOUTHWEST. LOW WILL ONLY
SLOWLY MOVE EASTWARD YIELDING A PROTRACTED PERIOD OF SEVERE WEATHER
ACROSS THE HEARTLAND. WE MAY SEE ANOTHER DAY OF ELEVATED TO
CRITICAL FIRE WEATHER OUT WEST ON MONDAY BUT INTENSITY OF
CONDITIONS APPEARS TO BE WANING OVER WHAT WE HAVE SEEN THIS
WEEKEND WITH NO KNOWN STARTS. NORTHWEST FLOW WILL RETURN INTO OUR
AREA BY TUESDAY AFTERNOON AS RIDGING BUILDS INTO OUR AREA AHEAD OF
NEXT STORM SYSTEM COMING ASHORE THE PACIFIC NORTHWEST. BY
THURSDAY...RIDGE WILL EXTEND ALL THE WAY FROM MEXICO TO ALASKA AND
SERVE TO BLOCK THE AFOREMENTIONED PACIFIC STORM LEAVING WEST TEXAS
IN PERSISTENT SOUTHWESTERLY FLOW. FORTUNATELY...THIS RIDGE WILL
BE OF THE DIRTY PERSUASION PROVIDING SEVERAL DAYS LATE THIS WEEK
WITH RAINFALL CHANCES.
DRYLINE WILL LARGELY STAY OUT EAST OR BEYOND THROUGH LATE WEDNESDAY
THOUGH WE WILL SEE A COLD FRONT MOVE IN MONDAY NIGHT GIVING A BIT OF
RELIEF OF THE TOASTY TEMPERATURES SEEN OVER THE PAST FEW DAYS. ALL
INDICATIONS CONTINUE TO POINT TO A DRY FROPA BUT TEMPERATURES WILL
BE KNOCKED BACK INTO THE 80S FOR MANY LOCATIONS. BY WEDNESDAY NIGHT
HONEST MOISTURE RETURN GETS UNDERWAY WITH DEWPOINTS IN THE UPPER 50S
TO LOW 60S FOR THE REMAINDER OF THE EXTENDED WITH THE DRYLINE
REMAINING TO OUR WEST THROUGH DAY 10. FRIDAY LOOKS TO BE THE BEST
OPPORTUNITY FOR WIDESPREAD RAIN AND HAVE BUMPED POPS INTO THE CHANCE
CATEGORY AS A SLUG OF BOTH PACIFIC AND GULF MOISTURE CONVERGE OVER
THE AREA.
FIRE WEATHER...
CRITICAL FIRE WEATHER CONDITIONS ARE EXPECTED THIS AFTERNOON WEST OF
A QUITAQUE TO LAKEVIEW LINE...WHILE ELEVATED TO BRIEFLY CRITICAL
CONDITIONS WILL TAKE PLACE TO THE SOUTH AND EAST. DRY AIR WILL
OVERSPREAD THE ENTIRE FORECAST AREA TODAY...PRODUCING RELATIVE
HUMIDITIES IN THE SINGLE DIGITS. WINDS WILL BE THE QUESTION MARK AS
HIGHEST WIND MAXIMUM WILL RIDE ACROSS THE EXTREME SOUTHERN PANHANDLE
AND NORTHERN SOUTH/ROLLING PLAINS. WILL ISSUE A RANGELAND FIRE
DANGER STATEMENT FOR AREAS NORTHWEST OF A CHILDRESS TO MATADOR LINE
AS MARGINAL WINDS ALOFT HAVE A LONGER DISTANCE TO MIX DOWN TO THE
SURFACE. WILL ALSO ISSUE AN RFD FOR COCHRAN THROUGH LUBBOCK COUNTIES
AS WIND MAXIMUM WILL LIKELY PRODUCE ELEVATED TO BRIEFLY CRITICAL
CONCERNS.
ELEVATED TO CRITICAL FIRE WEATHER CONCERNS ARE EXPECTED AGAIN ON
MONDAY WITH SUB 10 PCT RH VALUES. THE GREATEST CONCERN WILL
GENERALLY BE WEST OF THE CAPROCK ESCARPMENT.
&&
.PRELIMINARY POINT TEMPS/POPS...
FRIONA 87 55 83 51 78 / 0 0 0 0 0
TULIA 92 56 88 55 79 / 0 0 0 0 0
PLAINVIEW 91 57 90 55 82 / 0 0 0 0 0
LEVELLAND 92 57 90 56 85 / 0 0 0 0 0
LUBBOCK 93 58 92 57 85 / 0 0 0 0 0
DENVER CITY 90 61 90 56 86 / 0 0 0 0 0
BROWNFIELD 93 60 92 55 86 / 0 0 0 0 0
CHILDRESS 97 60 95 60 83 / 0 0 0 0 0
SPUR 97 63 96 61 86 / 0 0 0 0 0
ASPERMONT 100 65 100 66 88 / 0 0 0 0 0
&&
.LUB WATCHES/WARNINGS/ADVISORIES...
RED FLAG WARNING UNTIL 9 PM CDT THIS EVENING FOR THE FOLLOWING
ZONES: TXZ021>024-027>030.
&&
$$
23/99
431
FXUS64 KLUB 191106
AFDLUB
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LUBBOCK TX
606 AM CDT SUN MAY 19 2013
.AVIATION...
VFR CONDITIONS THROUGH THE PERIOD. WEST WINDS WILL INCREASE TO
NEAR 20 KNOTS WITH GUSTS TO 25-30 KNOTS BY MID TO LATE MORNING AS
A HOT AND DRY AIRMASS REMAINS IN PLACE. WINDS WILL FALL TO NEAR 10
KNOTS AFTER SUNSET WITH A FEW MID CLOUDS MOVING IN AROUND FL120.
&&
.PREV DISCUSSION... /ISSUED 403 AM CDT SUN MAY 19 2013/
SHORT TERM...
SOUTHERN EXTENT OF UPPER LOW MOVING INTO THE HIGH PLAINS WILL SLIDE
ACROSS WEST TEXAS TODAY...ALLOWING FOR LOWER HEIGHTS ALOFT AND
SLIGHTLY COOLER TEMPERATURES WHEN COMPARED TO THE LAST TWO DAYS.
BREEZY DOWNSLOPE WINDS WILL STILL ALLOW FOR TEMPERATURES TO WARM
ABOVE NORMAL IN THE MID 80S TO MID 90S ON THE CAPROCK AND UPPER 90S
TO NEAR 100 EAST OF THE ESCARPMENT. A SURFACE LOW WILL SLIDE SOUTH
NEAR THE FAR SOUTHEAST PANHANDLE KEEPING THE DRYLINE EAST OF THE
ROLLING PLAINS AND DRY CONDITIONS IN PLACE ACROSS THE ENTIRE AREA.
ELEVATED TO CRITICAL FIRE WEATHER CONCERNS WILL BE SEEN AREAWIDE
WITH THE GREATEST THREAT FOR RED FLAG MINUTES ACROSS THE NORTHWEST.
PLEASE SEE FIRE WEATHER SECTION FOR DETAILS.
AFOREMENTIONED SURFACE LOW WILL CONTINUE MAKING A SLOW PUSH SOUTH
TONIGHT...VEERING WINDS TO THE NORTHWEST AS A WEAK FRONT PUSHES INTO
THE SOUTH PLAINS. NOT EXPECTING ANY IMPACTS IN TERMS OF AIRMASS
MODIFICATION OR WIND AS PRESSURE GRADIENT WILL WEAKEN UPON ITS
APPROACH. WINDS WILL BACK TOWARD THE WEST AND SOUTHWEST QUICKLY
MONDAY MORNING AS THIS FEATURE LIFTS BACK NORTH.
LONG TERM...
POTENT UPPER LEVEL STORM SYSTEM IS EXPECTED TO BE NORTH OF US ACROSS
NRN NE AND SRN SD BY MONDAY MORNING WITH A TROUGH AXIS ROTATING
AROUND THE FEATURE BACK INTO THE DESERT SOUTHWEST. LOW WILL ONLY
SLOWLY MOVE EASTWARD YIELDING A PROTRACTED PERIOD OF SEVERE WEATHER
ACROSS THE HEARTLAND. WE MAY SEE ANOTHER DAY OF ELEVATED TO
CRITICAL FIRE WEATHER OUT WEST ON MONDAY BUT INTENSITY OF
CONDITIONS APPEARS TO BE WANING OVER WHAT WE HAVE SEEN THIS
WEEKEND WITH NO KNOWN STARTS. NORTHWEST FLOW WILL RETURN INTO OUR
AREA BY TUESDAY AFTERNOON AS RIDGING BUILDS INTO OUR AREA AHEAD OF
NEXT STORM SYSTEM COMING ASHORE THE PACIFIC NORTHWEST. BY
THURSDAY...RIDGE WILL EXTEND ALL THE WAY FROM MEXICO TO ALASKA AND
SERVE TO BLOCK THE AFOREMENTIONED PACIFIC STORM LEAVING WEST TEXAS
IN PERSISTENT SOUTHWESTERLY FLOW. FORTUNATELY...THIS RIDGE WILL
BE OF THE DIRTY PERSUASION PROVIDING SEVERAL DAYS LATE THIS WEEK
WITH RAINFALL CHANCES.
DRYLINE WILL LARGELY STAY OUT EAST OR BEYOND THROUGH LATE WEDNESDAY
THOUGH WE WILL SEE A COLD FRONT MOVE IN MONDAY NIGHT GIVING A BIT OF
RELIEF OF THE TOASTY TEMPERATURES SEEN OVER THE PAST FEW DAYS. ALL
INDICATIONS CONTINUE TO POINT TO A DRY FROPA BUT TEMPERATURES WILL
BE KNOCKED BACK INTO THE 80S FOR MANY LOCATIONS. BY WEDNESDAY NIGHT
HONEST MOISTURE RETURN GETS UNDERWAY WITH DEWPOINTS IN THE UPPER 50S
TO LOW 60S FOR THE REMAINDER OF THE EXTENDED WITH THE DRYLINE
REMAINING TO OUR WEST THROUGH DAY 10. FRIDAY LOOKS TO BE THE BEST
OPPORTUNITY FOR WIDESPREAD RAIN AND HAVE BUMPED POPS INTO THE CHANCE
CATEGORY AS A SLUG OF BOTH PACIFIC AND GULF MOISTURE CONVERGE OVER
THE AREA.
FIRE WEATHER...
CRITICAL FIRE WEATHER CONDITIONS ARE EXPECTED THIS AFTERNOON WEST OF
A QUITAQUE TO LAKEVIEW LINE...WHILE ELEVATED TO BRIEFLY CRITICAL
CONDITIONS WILL TAKE PLACE TO THE SOUTH AND EAST. DRY AIR WILL
OVERSPREAD THE ENTIRE FORECAST AREA TODAY...PRODUCING RELATIVE
HUMIDITIES IN THE SINGLE DIGITS. WINDS WILL BE THE QUESTION MARK AS
HIGHEST WIND MAXIMUM WILL RIDE ACROSS THE EXTREME SOUTHERN PANHANDLE
AND NORTHERN SOUTH/ROLLING PLAINS. WILL ISSUE A RANGELAND FIRE
DANGER STATEMENT FOR AREAS NORTHWEST OF A CHILDRESS TO MATADOR LINE
AS MARGINAL WINDS ALOFT HAVE A LONGER DISTANCE TO MIX DOWN TO THE
SURFACE. WILL ALSO ISSUE AN RFD FOR COCHRAN THROUGH LUBBOCK COUNTIES
AS WIND MAXIMUM WILL LIKELY PRODUCE ELEVATED TO BRIEFLY CRITICAL
CONCERNS.
ELEVATED TO CRITICAL FIRE WEATHER CONCERNS ARE EXPECTED AGAIN ON
MONDAY WITH SUB 10 PCT RH VALUES. THE GREATEST CONCERN WILL
GENERALLY BE WEST OF THE CAPROCK ESCARPMENT.
&&
.PRELIMINARY POINT TEMPS/POPS...
FRIONA 87 55 83 51 78 / 0 0 0 0 0
TULIA 92 56 88 55 79 / 0 0 0 0 0
PLAINVIEW 91 57 90 55 82 / 0 0 0 0 0
LEVELLAND 92 57 90 56 85 / 0 0 0 0 0
LUBBOCK 93 58 92 57 84 / 0 0 0 0 0
DENVER CITY 90 61 90 56 86 / 0 0 0 0 0
BROWNFIELD 93 60 92 55 86 / 0 0 0 0 0
CHILDRESS 97 60 95 60 83 / 0 0 0 0 0
SPUR 97 63 96 61 86 / 0 0 0 0 0
ASPERMONT 100 65 100 66 88 / 0 0 0 0 0
&&
.LUB WATCHES/WARNINGS/ADVISORIES...
RED FLAG WARNING FROM NOON TODAY TO 9 PM CDT THIS EVENING FOR
THE FOLLOWING ZONES: TXZ021>024-027>030.
&&
$$
31
936
FXUS64 KLUB 190903
AFDLUB
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LUBBOCK TX
403 AM CDT SUN MAY 19 2013
.SHORT TERM...
SOUTHERN EXTENT OF UPPER LOW MOVING INTO THE HIGH PLAINS WILL SLIDE
ACROSS WEST TEXAS TODAY...ALLOWING FOR LOWER HEIGHTS ALOFT AND
SLIGHTLY COOLER TEMPERATURES WHEN COMPARED TO THE LAST TWO DAYS.
BREEZY DOWNSLOPE WINDS WILL STILL ALLOW FOR TEMPERATURES TO WARM
ABOVE NORMAL IN THE MID 80S TO MID 90S ON THE CAPROCK AND UPPER 90S
TO NEAR 100 EAST OF THE ESCARPMENT. A SURFACE LOW WILL SLIDE SOUTH
NEAR THE FAR SOUTHEAST PANHANDLE KEEPING THE DRYLINE EAST OF THE
ROLLING PLAINS AND DRY CONDITIONS IN PLACE ACROSS THE ENTIRE AREA.
ELEVATED TO CRITICAL FIRE WEATHER CONCERNS WILL BE SEEN AREAWIDE
WITH THE GREATEST THREAT FOR RED FLAG MINUTES ACROSS THE NORTHWEST.
PLEASE SEE FIRE WEATHER SECTION FOR DETAILS.
AFOREMENTIONED SURFACE LOW WILL CONTINUE MAKING A SLOW PUSH SOUTH
TONIGHT...VEERING WINDS TO THE NORTHWEST AS A WEAK FRONT PUSHES INTO
THE SOUTH PLAINS. NOT EXPECTING ANY IMPACTS IN TERMS OF AIRMASS
MODIFICATION OR WIND AS PRESSURE GRADIENT WILL WEAKEN UPON ITS
APPROACH. WINDS WILL BACK TOWARD THE WEST AND SOUTHWEST QUICKLY
MONDAY MORNING AS THIS FEATURE LIFTS BACK NORTH.
&&
.LONG TERM...
POTENT UPPER LEVEL STORM SYSTEM IS EXPECTED TO BE NORTH OF US ACROSS
NRN NE AND SRN SD BY MONDAY MORNING WITH A TROUGH AXIS ROTATING
AROUND THE FEATURE BACK INTO THE DESERT SOUTHWEST. LOW WILL ONLY
SLOWLY MOVE EASTWARD YIELDING A PROTRACTED PERIOD OF SEVERE WEATHER
ACROSS THE HEARTLAND. WE MAY SEE ANOTHER DAY OF ELEVATED TO
CRITICAL FIRE WEATHER OUT WEST ON MONDAY BUT INTENSITY OF
CONDITIONS APPEARS TO BE WANING OVER WHAT WE HAVE SEEN THIS
WEEKEND WITH NO KNOWN STARTS. NORTHWEST FLOW WILL RETURN INTO OUR
AREA BY TUESDAY AFTERNOON AS RIDGING BUILDS INTO OUR AREA AHEAD OF
NEXT STORM SYSTEM COMING ASHORE THE PACIFIC NORTHWEST. BY
THURSDAY...RIDGE WILL EXTEND ALL THE WAY FROM MEXICO TO ALASKA AND
SERVE TO BLOCK THE AFOREMENTIONED PACIFIC STORM LEAVING WEST TEXAS
IN PERSISTENT SOUTHWESTERLY FLOW. FORTUNATELY...THIS RIDGE WILL
BE OF THE DIRTY PERSUASION PROVIDING SEVERAL DAYS LATE THIS WEEK
WITH RAINFALL CHANCES.
DRYLINE WILL LARGELY STAY OUT EAST OR BEYOND THROUGH LATE WEDNESDAY
THOUGH WE WILL SEE A COLD FRONT MOVE IN MONDAY NIGHT GIVING A BIT OF
RELIEF OF THE TOASTY TEMPERATURES SEEN OVER THE PAST FEW DAYS. ALL
INDICATIONS CONTINUE TO POINT TO A DRY FROPA BUT TEMPERATURES WILL
BE KNOCKED BACK INTO THE 80S FOR MANY LOCATIONS. BY WEDNESDAY NIGHT
HONEST MOISTURE RETURN GETS UNDERWAY WITH DEWPOINTS IN THE UPPER 50S
TO LOW 60S FOR THE REMAINDER OF THE EXTENDED WITH THE DRYLINE
REMAINING TO OUR WEST THROUGH DAY 10. FRIDAY LOOKS TO BE THE BEST
OPPORTUNITY FOR WIDESPREAD RAIN AND HAVE BUMPED POPS INTO THE CHANCE
CATEGORY AS A SLUG OF BOTH PACIFIC AND GULF MOISTURE CONVERGE OVER
THE AREA.
&&
.FIRE WEATHER...
CRITICAL FIRE WEATHER CONDITIONS ARE EXPECTED THIS AFTERNOON WEST OF
A QUITAQUE TO LAKEVIEW LINE...WHILE ELEVATED TO BRIEFLY CRITICAL
CONDITIONS WILL TAKE PLACE TO THE SOUTH AND EAST. DRY AIR WILL
OVERSPREAD THE ENTIRE FORECAST AREA TODAY...PRODUCING RELATIVE
HUMIDITIES IN THE SINGLE DIGITS. WINDS WILL BE THE QUESTION MARK AS
HIGHEST WIND MAXIMUM WILL RIDE ACROSS THE EXTREME SOUTHERN PANHANDLE
AND NORTHERN SOUTH/ROLLING PLAINS. WILL ISSUE A RANGELAND FIRE
DANGER STATEMENT FOR AREAS NORTHWEST OF A CHILDRESS TO MATADOR LINE
AS MARGINAL WINDS ALOFT HAVE A LONGER DISTANCE TO MIX DOWN TO THE
SURFACE. WILL ALSO ISSUE AN RFD FOR COCHRAN THROUGH LUBBOCK COUNTIES
AS WIND MAXIMUM WILL LIKELY PRODUCE ELEVATED TO BRIEFLY CRITICAL
CONCERNS.
ELEVATED TO CRITICAL FIRE WEATHER CONCERNS ARE EXPECTED AGAIN ON
MONDAY WITH SUB 10 PCT RH VALUES. THE GREATEST CONCERN WILL
GENERALLY BE WEST OF THE CAPROCK ESCARPMENT.
&&
.PRELIMINARY POINT TEMPS/POPS...
FRIONA 87 55 83 51 78 / 0 0 0 0 0
TULIA 92 56 88 55 79 / 0 0 0 0 0
PLAINVIEW 91 57 90 55 82 / 0 0 0 0 0
LEVELLAND 92 57 90 56 85 / 0 0 0 0 0
LUBBOCK 93 58 92 57 84 / 0 0 0 0 0
DENVER CITY 90 61 90 56 86 / 0 0 0 0 0
BROWNFIELD 93 60 92 55 86 / 0 0 0 0 0
CHILDRESS 97 60 95 60 83 / 0 0 0 0 0
SPUR 97 63 96 61 86 / 0 0 0 0 0
ASPERMONT 100 65 100 66 88 / 0 0 0 0 0
&&
.LUB WATCHES/WARNINGS/ADVISORIES...
RED FLAG WARNING FROM NOON TODAY TO 9 PM CDT THIS EVENING FOR
THE FOLLOWING ZONES: TXZ021>024-027>030.
&&
$$
31/26
921
FXUS64 KLUB 190441
AFDLUB
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LUBBOCK TX
1141 PM CDT SAT MAY 18 2013
.AVIATION...
RETREATING SURFACE DRY-LINE SHOULD HOLD VERY CLOSE TO KCDS-KLBB
LINE THROUGH THE NIGHT. THEN A VEERED DRY WESTERLY WIND WILL
INCREASE ACROSS THE AREA SHORTLY AFTER DAYBREAK SUNDAY AS A WEAK
PACIFIC COLD FRONT PULLS THE SURFACE TROUGH A BIT FURTHER EAST
INTO WESTERN OKLAHOMA. SURFACE WINDS APPEAR LIKELY TO REMAIN JUST
BELOW WIND SPEEDS NEEDED FOR SIGNIFICANT VISIBILITY REDUCTION FROM
BLOWING DUST. RMCQUEEN
&&
.PREV DISCUSSION... /ISSUED 929 PM CDT SAT MAY 18 2013/
UPDATE...
THUNDERSTORMS HAVE MOVED OFF INTO WESTERN OKLAHOMA WITH VERY
LITTLE CHANCE AT REDEVELOPMENT AT THIS POINT. THE TORNADO WATCH
WAS CANCELLED FOR THE EASTERN ROLLING PLAINS AND SOUTHEASTERN
TEXAS PANHANDLE. THE RED FLAG WARNING WAS LEFT TO EXPIRE AT 9 PM.
MOST TTU MESONET SITES HAVE DROPPED BELOW RED FLAG CRITERIA.
DEVELOPMENT OF CRITICAL FIRE WEATHER CONDITIONS IS POSSIBLE AGAIN
TOMORROW AFTERNOON.
PREV DISCUSSION... /ISSUED 651 PM CDT SAT MAY 18 2013/
AVIATION...
CURRENT SMALL AREA OF TSRA PASSING AROUND KCDS WITH THE SURFACE
DRY-LINE SHOULD BE MOSTLY EAST OF THE AIRPORT WITHIN A FEW MINUTES
OF 00Z. RETAINED VCTS FOR AN HOUR THOUGH WILL BE WATCHING POTENTIAL
FOR REDEVELOPMENT NORTH OF KCDS THAT COULD STRENGTHEN IN THE LOW
LEVEL SOUTH-SOUTHEASTERLY FLOW AND MOVE SOUTHWARD EARLY IN THE
EVENING. THUNDER CHANCES SHOULD BE GONE BY MID EVENING WITH DRY
VFR CONDITIONS FOLLOWING. FLOW WILL VEER TO WESTERLY ON SUNDAY.
RMCQUEEN
PREV DISCUSSION... /ISSUED 319 PM CDT SAT MAY 18 2013/
SHORT TERM...
LITTLE CHANGE IN THINKING TO THE ONGOING FORECAST...WITH A RISK
OF SEVERE STORMS ACROSS THE FAR EASTERN ZONES THROUGH THIS
EVENING. ELEVATED TO CRITICAL FIRE WEATHER WILL ALSO DEVELOP
ACROSS MUCH OF THE CAPROCK LATE THIS AFTERNOON...WITH ANOTHER
ROUND OF ELEVATED TO CRITICAL FIRE WEATHER FOR THE ENTIRE FA
SUNDAY AFTERNOON.
MOISTURE CONTINUES TO MIX OUT THANKS TO STRONG HEATING THIS
AFTERNOON...WITH 1930Z TEMPERATURES WELL INTO THE 90S AND
APPROACHING THE TRIPLE DIGIT MARK OFF THE CAPROCK. DEWPOINTS HAVE
FALLEN INTO THE TEENS AND 20S ACROSS MUCH OF THE CAPROCK THOUGH
LOWER TO MIDDLE 50 DEGREE DEWPOINTS WERE HANGING ON ACROSS THE FAR
EASTERN ZONES. THIS EXTREME HEAT AND DECENT MOISTURE BENEATH STEEP
MID-LEVEL LAPSE RATES WERE RESULTING IN STRONG INSTABILITY...WITH THE
LATEST LAPS ANALYSIS SHOWING 2000-3000+ J/KG OF SBCAPE GENERALLY
ALONG AND EAST OF A CHILDRESS TO LAKE ALAN HENRY LINE. SFC
CONVERGENCE IS NOT OVERLY IMPRESSIVE ALONG THE DRYLINE BUT GIVEN THE
STRONG HEATING AND RESULTING WEAKENING CAP...IT STILL APPEARS
ISOLATED TO WIDELY SCATTERED CONVECTION WILL BE POSSIBLE IN THE NEXT
FEW HOURS. THIS ACTIVITY WILL START SOMEWHERE NEAR OUR EAST ROW OF
COUNTIES...THOUGH MAY NOT STAY IN THE CWA FOR LONG. STILL...THE
MAGNITUDE OF THE INSTABILITY AND SUFFICIENT 0-6 KM SHEAR WILL
PROMOTE RAPID INTENSIFICATION FOR ANY STORMS THAT CAN DEVELOP AND
HAVE CONTINUED THE SEVERE MENTION FOR THE EASTERN ROW OF COUNTIES
THROUGH THIS EVENING. THERE IS A CHANCE ADDITIONAL STORM DEVELOPMENT
COULD TAKE PLACE ACROSS THE FAR EAST OR SOUTHEAST ZONES LATER
TONIGHT AS LARGE SCALE ASCENT FROM A NEGATIVELY TILTED TROUGH MOVING
THROUGH THE 4-CORNERS INCREASES. THUS...HAVE MAINTAINED A SLIM
THUNDER CHANCE ACROSS THE SOUTHEASTERN ZONES BEYOND 06Z.
BEYOND THE SEVERE THREAT THROUGH THIS EVENING ACROSS THE EASTERN
ZONES...HOT AND VERY DRY AIR AS SPREAD ACROSS THE CAPROCK RESULTING
IN RH VALUES DROPPING INTO THE SINGLE DIGITS. WINDS HAVE BEEN SLOW
TO INCREASE THIS AFTERNOON BUT SHOULD CONTINUE TO TREND UPWARD
FURTHER ELEVATING THE FIRE DANGER. THE LEAD WAVE WITHIN THE WESTERN
TROUGH WILL EMERGE ACROSS THE CENTRAL PLAINS SUNDAY AND THIS PULL
THE DRYLINE EVER FURTHER EAST...OUT OF THE FA...WITH WARM TO HOT
TEMPERATURES AND GUSTY AND DRY WESTERLY WINDS IN ITS WAKE.
LONG TERM...
PLAN FEW CHANGES TO THE LONG TERM. MONDAY LOOKS SIMILAR TO SUNDAY
WITH DRY WESTERLY WINDS AND POSSIBLE FIRE WEATHER CONDITIONS. A
COLD FRONT MONDAY NIGHT SHOULD COOL THINGS DOWN A BIT FOR TUESDAY
AND WEDNESDAY. THE FRONT THEN STALLS NOT TOO FAR TO OUR
SOUTH...ALLOWING FOR A QUICK RETURN OF GULF OF MEXICO MOISTURE THE
LATTER PART OF THE WEEK. THE RETURN OF MOISTURE COINCIDES WITH AN
UPPER TROUGH DIGGING ALONG THE WEST COAST. AS SUCH...THE CONTINUED
MENTION OF THUNDERSTORMS IN THE FORECAST FOR THURSDAY THROUGH
SATURDAY LOOKS GOOD.
FIRE WEATHER...
HOT AND VERY DRY CONDITIONS HAVE DEVELOPED WEST OF THE DRYLINE ON
THE CAPROCK THIS AFTERNOON...THOUGH WINDS HAVE BEEN SLOW TO
INCREASE. STILL...DO EXPECT THE WIND SPEEDS TO CONTINUE TO TREND
UPWARD THROUGH LATE THIS AFTERNOON...AND FOR THIS REASON HAVE LEFT
THE RED FLAG WARNING IN PLACE THROUGH 02Z. WINDS WILL TREND DOWNWARD
THIS EVENING...THOUGH THEY MAY COME UP A BIT AGAIN LATE
TONIGHT...AND RH RECOVERIES WILL BE POOR ON THE CAPROCK. WINDS WILL
TURN MORE WESTERLY AND INCREASE AGAIN ON SUNDAY...WITH THE ENTIRE
AREA EXPERIENCING HOT...DRY AND BREEZY CONDITIONS AS THE DRYLINE
PUSHES FURTHER EAST THAN TODAY. SIMILAR TO TODAY...WINDS WILL BE ON
THE FENCE REGARDING MEETING THE RED FLAG CRITERIA...BUT RH VALUES
WILL BE A SLAM DUNK...DROPPING INTO THE SINGLE DIGITS FOR MOST OR
ALL OF THE FA. TOUGH TO PINPOINT WHERE THE STRONGEST WINDS WILL BE
/AND MOSTLY LIKELY LONGER DURATION OF RED FLAG CONDITIONS WILL BE/
BUT CURRENT RUN OF MODELS TEND TO FAVOR THE NORTHERN AND WESTERN
ZONES. DID NOT GET CUTE ATTM AND INSTEAD DECIDED TO ISSUE A FIRE
WEATHER WATCH FOR THE ENTIRE AREA SUNDAY AFTERNOON/EVENING AND WILL
LET LATER SHIFTS DECIDE IF/WHERE A RFD AND RFW WILL BE MOST
APPROPRIATE.
&&
.PRELIMINARY POINT TEMPS/POPS...
FRIONA 54 88 54 84 49 / 0 0 0 0 0
TULIA 56 92 56 89 52 / 0 0 0 0 0
PLAINVIEW 58 92 58 90 53 / 0 0 0 0 0
LEVELLAND 60 93 57 91 54 / 0 0 0 0 0
LUBBOCK 61 94 60 92 55 / 0 0 0 0 0
DENVER CITY 60 92 59 91 55 / 0 0 0 0 0
BROWNFIELD 63 94 60 93 55 / 0 0 0 0 0
CHILDRESS 64 96 62 93 58 / 10 0 0 0 0
SPUR 64 97 64 95 60 / 10 0 0 0 0
ASPERMONT 70 102 65 98 62 / 20 0 0 0 0
&&
.LUB WATCHES/WARNINGS/ADVISORIES...
FIRE WEATHER WATCH FROM SUNDAY AFTERNOON THROUGH SUNDAY EVENING
FOR THE FOLLOWING ZONES: TXZ021>044.
&&
$$
99/99/05
133
FXUS64 KLUB 190229
AFDLUB
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LUBBOCK TX
929 PM CDT SAT MAY 18 2013
.UPDATE...
THUNDERSTORMS HAVE MOVED OFF INTO WESTERN OKLAHOMA WITH VERY
LITTLE CHANCE AT REDEVELOPMENT AT THIS POINT. THE TORNADO WATCH
WAS CANCELLED FOR THE EASTERN ROLLING PLAINS AND SOUTHEASTERN
TEXAS PANHANDLE. THE RED FLAG WARNING WAS LEFT TO EXPIRE AT 9 PM.
MOST TTU MESONET SITES HAVE DROPPED BELOW RED FLAG CRITERIA.
DEVELOPMENT OF CRITICAL FIRE WEATHER CONDITIONS IS POSSIBLE AGAIN
TOMORROW AFTERNOON.
&&
.PREV DISCUSSION... /ISSUED 651 PM CDT SAT MAY 18 2013/
AVIATION...
CURRENT SMALL AREA OF TSRA PASSING AROUND KCDS WITH THE SURFACE
DRY-LINE SHOULD BE MOSTLY EAST OF THE AIRPORT WITHIN A FEW MINUTES
OF 00Z. RETAINED VCTS FOR AN HOUR THOUGH WILL BE WATCHING POTENTIAL
FOR REDEVELOPMENT NORTH OF KCDS THAT COULD STRENGTHEN IN THE LOW
LEVEL SOUTH-SOUTHEASTERLY FLOW AND MOVE SOUTHWARD EARLY IN THE
EVENING. THUNDER CHANCES SHOULD BE GONE BY MID EVENING WITH DRY
VFR CONDITIONS FOLLOWING. FLOW WILL VEER TO WESTERLY ON SUNDAY.
RMCQUEEN
PREV DISCUSSION... /ISSUED 319 PM CDT SAT MAY 18 2013/
SHORT TERM...
LITTLE CHANGE IN THINKING TO THE ONGOING FORECAST...WITH A RISK
OF SEVERE STORMS ACROSS THE FAR EASTERN ZONES THROUGH THIS
EVENING. ELEVATED TO CRITICAL FIRE WEATHER WILL ALSO DEVELOP
ACROSS MUCH OF THE CAPROCK LATE THIS AFTERNOON...WITH ANOTHER
ROUND OF ELEVATED TO CRITICAL FIRE WEATHER FOR THE ENTIRE FA
SUNDAY AFTERNOON.
MOISTURE CONTINUES TO MIX OUT THANKS TO STRONG HEATING THIS
AFTERNOON...WITH 1930Z TEMPERATURES WELL INTO THE 90S AND
APPROACHING THE TRIPLE DIGIT MARK OFF THE CAPROCK. DEWPOINTS HAVE
FALLEN INTO THE TEENS AND 20S ACROSS MUCH OF THE CAPROCK THOUGH
LOWER TO MIDDLE 50 DEGREE DEWPOINTS WERE HANGING ON ACROSS THE FAR
EASTERN ZONES. THIS EXTREME HEAT AND DECENT MOISTURE BENEATH STEEP
MID-LEVEL LAPSE RATES WERE RESULTING IN STRONG INSTABILITY...WITH THE
LATEST LAPS ANALYSIS SHOWING 2000-3000+ J/KG OF SBCAPE GENERALLY
ALONG AND EAST OF A CHILDRESS TO LAKE ALAN HENRY LINE. SFC
CONVERGENCE IS NOT OVERLY IMPRESSIVE ALONG THE DRYLINE BUT GIVEN THE
STRONG HEATING AND RESULTING WEAKENING CAP...IT STILL APPEARS
ISOLATED TO WIDELY SCATTERED CONVECTION WILL BE POSSIBLE IN THE NEXT
FEW HOURS. THIS ACTIVITY WILL START SOMEWHERE NEAR OUR EAST ROW OF
COUNTIES...THOUGH MAY NOT STAY IN THE CWA FOR LONG. STILL...THE
MAGNITUDE OF THE INSTABILITY AND SUFFICIENT 0-6 KM SHEAR WILL
PROMOTE RAPID INTENSIFICATION FOR ANY STORMS THAT CAN DEVELOP AND
HAVE CONTINUED THE SEVERE MENTION FOR THE EASTERN ROW OF COUNTIES
THROUGH THIS EVENING. THERE IS A CHANCE ADDITIONAL STORM DEVELOPMENT
COULD TAKE PLACE ACROSS THE FAR EAST OR SOUTHEAST ZONES LATER
TONIGHT AS LARGE SCALE ASCENT FROM A NEGATIVELY TILTED TROUGH MOVING
THROUGH THE 4-CORNERS INCREASES. THUS...HAVE MAINTAINED A SLIM
THUNDER CHANCE ACROSS THE SOUTHEASTERN ZONES BEYOND 06Z.
BEYOND THE SEVERE THREAT THROUGH THIS EVENING ACROSS THE EASTERN
ZONES...HOT AND VERY DRY AIR AS SPREAD ACROSS THE CAPROCK RESULTING
IN RH VALUES DROPPING INTO THE SINGLE DIGITS. WINDS HAVE BEEN SLOW
TO INCREASE THIS AFTERNOON BUT SHOULD CONTINUE TO TREND UPWARD
FURTHER ELEVATING THE FIRE DANGER. THE LEAD WAVE WITHIN THE WESTERN
TROUGH WILL EMERGE ACROSS THE CENTRAL PLAINS SUNDAY AND THIS PULL
THE DRYLINE EVER FURTHER EAST...OUT OF THE FA...WITH WARM TO HOT
TEMPERATURES AND GUSTY AND DRY WESTERLY WINDS IN ITS WAKE.
LONG TERM...
PLAN FEW CHANGES TO THE LONG TERM. MONDAY LOOKS SIMILAR TO SUNDAY
WITH DRY WESTERLY WINDS AND POSSIBLE FIRE WEATHER CONDITIONS. A
COLD FRONT MONDAY NIGHT SHOULD COOL THINGS DOWN A BIT FOR TUESDAY
AND WEDNESDAY. THE FRONT THEN STALLS NOT TOO FAR TO OUR
SOUTH...ALLOWING FOR A QUICK RETURN OF GULF OF MEXICO MOISTURE THE
LATTER PART OF THE WEEK. THE RETURN OF MOISTURE COINCIDES WITH AN
UPPER TROUGH DIGGING ALONG THE WEST COAST. AS SUCH...THE CONTINUED
MENTION OF THUNDERSTORMS IN THE FORECAST FOR THURSDAY THROUGH
SATURDAY LOOKS GOOD.
FIRE WEATHER...
HOT AND VERY DRY CONDITIONS HAVE DEVELOPED WEST OF THE DRYLINE ON
THE CAPROCK THIS AFTERNOON...THOUGH WINDS HAVE BEEN SLOW TO
INCREASE. STILL...DO EXPECT THE WIND SPEEDS TO CONTINUE TO TREND
UPWARD THROUGH LATE THIS AFTERNOON...AND FOR THIS REASON HAVE LEFT
THE RED FLAG WARNING IN PLACE THROUGH 02Z. WINDS WILL TREND DOWNWARD
THIS EVENING...THOUGH THEY MAY COME UP A BIT AGAIN LATE
TONIGHT...AND RH RECOVERIES WILL BE POOR ON THE CAPROCK. WINDS WILL
TURN MORE WESTERLY AND INCREASE AGAIN ON SUNDAY...WITH THE ENTIRE
AREA EXPERIENCING HOT...DRY AND BREEZY CONDITIONS AS THE DRYLINE
PUSHES FURTHER EAST THAN TODAY. SIMILAR TO TODAY...WINDS WILL BE ON
THE FENCE REGARDING MEETING THE RED FLAG CRITERIA...BUT RH VALUES
WILL BE A SLAM DUNK...DROPPING INTO THE SINGLE DIGITS FOR MOST OR
ALL OF THE FA. TOUGH TO PINPOINT WHERE THE STRONGEST WINDS WILL BE
/AND MOSTLY LIKELY LONGER DURATION OF RED FLAG CONDITIONS WILL BE/
BUT CURRENT RUN OF MODELS TEND TO FAVOR THE NORTHERN AND WESTERN
ZONES. DID NOT GET CUTE ATTM AND INSTEAD DECIDED TO ISSUE A FIRE
WEATHER WATCH FOR THE ENTIRE AREA SUNDAY AFTERNOON/EVENING AND WILL
LET LATER SHIFTS DECIDE IF/WHERE A RFD AND RFW WILL BE MOST
APPROPRIATE.
&&
.PRELIMINARY POINT TEMPS/POPS...
FRIONA 54 88 54 84 49 / 0 0 0 0 0
TULIA 56 92 56 89 52 / 0 0 0 0 0
PLAINVIEW 58 92 58 90 53 / 0 0 0 0 0
LEVELLAND 60 93 57 91 54 / 0 0 0 0 0
LUBBOCK 61 94 59 92 55 / 0 0 0 0 0
DENVER CITY 60 92 59 91 55 / 0 0 0 0 0
BROWNFIELD 63 94 60 93 55 / 0 0 0 0 0
CHILDRESS 64 96 62 93 58 / 10 0 0 0 0
SPUR 64 97 64 95 60 / 10 0 0 0 0
ASPERMONT 70 102 65 98 62 / 20 0 0 0 0
&&
.LUB WATCHES/WARNINGS/ADVISORIES...
FIRE WEATHER WATCH FROM SUNDAY AFTERNOON THROUGH SUNDAY EVENING
FOR THE FOLLOWING ZONES: TXZ021>044.
&&
$$
01
098
FXUS64 KLUB 182351
AFDLUB
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LUBBOCK TX
651 PM CDT SAT MAY 18 2013
.AVIATION...
CURRENT SMALL AREA OF TSRA PASSING AROUND KCDS WITH THE SURFACE
DRY-LINE SHOULD BE MOSTLY EAST OF THE AIRPORT WITHIN A FEW MINUTES
OF 00Z. RETAINED VCTS FOR AN HOUR THOUGH WILL BE WATCHING POTENTIAL
FOR REDEVELOPMENT NORTH OF KCDS THAT COULD STRENGTHEN IN THE LOW
LEVEL SOUTH-SOUTHEASTERLY FLOW AND MOVE SOUTHWARD EARLY IN THE
EVENING. THUNDER CHANCES SHOULD BE GONE BY MID EVENING WITH DRY
VFR CONDITIONS FOLLOWING. FLOW WILL VEER TO WESTERLY ON SUNDAY.
RMCQUEEN
&&
.PREV DISCUSSION... /ISSUED 319 PM CDT SAT MAY 18 2013/
SHORT TERM...
LITTLE CHANGE IN THINKING TO THE ONGOING FORECAST...WITH A RISK
OF SEVERE STORMS ACROSS THE FAR EASTERN ZONES THROUGH THIS
EVENING. ELEVATED TO CRITICAL FIRE WEATHER WILL ALSO DEVELOP
ACROSS MUCH OF THE CAPROCK LATE THIS AFTERNOON...WITH ANOTHER
ROUND OF ELEVATED TO CRITICAL FIRE WEATHER FOR THE ENTIRE FA
SUNDAY AFTERNOON.
MOISTURE CONTINUES TO MIX OUT THANKS TO STRONG HEATING THIS
AFTERNOON...WITH 1930Z TEMPERATURES WELL INTO THE 90S AND
APPROACHING THE TRIPLE DIGIT MARK OFF THE CAPROCK. DEWPOINTS HAVE
FALLEN INTO THE TEENS AND 20S ACROSS MUCH OF THE CAPROCK THOUGH
LOWER TO MIDDLE 50 DEGREE DEWPOINTS WERE HANGING ON ACROSS THE FAR
EASTERN ZONES. THIS EXTREME HEAT AND DECENT MOISTURE BENEATH STEEP
MID-LEVEL LAPSE RATES WERE RESULTING IN STRONG INSTABILITY...WITH THE
LATEST LAPS ANALYSIS SHOWING 2000-3000+ J/KG OF SBCAPE GENERALLY
ALONG AND EAST OF A CHILDRESS TO LAKE ALAN HENRY LINE. SFC
CONVERGENCE IS NOT OVERLY IMPRESSIVE ALONG THE DRYLINE BUT GIVEN THE
STRONG HEATING AND RESULTING WEAKENING CAP...IT STILL APPEARS
ISOLATED TO WIDELY SCATTERED CONVECTION WILL BE POSSIBLE IN THE NEXT
FEW HOURS. THIS ACTIVITY WILL START SOMEWHERE NEAR OUR EAST ROW OF
COUNTIES...THOUGH MAY NOT STAY IN THE CWA FOR LONG. STILL...THE
MAGNITUDE OF THE INSTABILITY AND SUFFICIENT 0-6 KM SHEAR WILL
PROMOTE RAPID INTENSIFICATION FOR ANY STORMS THAT CAN DEVELOP AND
HAVE CONTINUED THE SEVERE MENTION FOR THE EASTERN ROW OF COUNTIES
THROUGH THIS EVENING. THERE IS A CHANCE ADDITIONAL STORM DEVELOPMENT
COULD TAKE PLACE ACROSS THE FAR EAST OR SOUTHEAST ZONES LATER
TONIGHT AS LARGE SCALE ASCENT FROM A NEGATIVELY TILTED TROUGH MOVING
THROUGH THE 4-CORNERS INCREASES. THUS...HAVE MAINTAINED A SLIM
THUNDER CHANCE ACROSS THE SOUTHEASTERN ZONES BEYOND 06Z.
BEYOND THE SEVERE THREAT THROUGH THIS EVENING ACROSS THE EASTERN
ZONES...HOT AND VERY DRY AIR AS SPREAD ACROSS THE CAPROCK RESULTING
IN RH VALUES DROPPING INTO THE SINGLE DIGITS. WINDS HAVE BEEN SLOW
TO INCREASE THIS AFTERNOON BUT SHOULD CONTINUE TO TREND UPWARD
FURTHER ELEVATING THE FIRE DANGER. THE LEAD WAVE WITHIN THE WESTERN
TROUGH WILL EMERGE ACROSS THE CENTRAL PLAINS SUNDAY AND THIS PULL
THE DRYLINE EVER FURTHER EAST...OUT OF THE FA...WITH WARM TO HOT
TEMPERATURES AND GUSTY AND DRY WESTERLY WINDS IN ITS WAKE.
LONG TERM...
PLAN FEW CHANGES TO THE LONG TERM. MONDAY LOOKS SIMILAR TO SUNDAY
WITH DRY WESTERLY WINDS AND POSSIBLE FIRE WEATHER CONDITIONS. A
COLD FRONT MONDAY NIGHT SHOULD COOL THINGS DOWN A BIT FOR TUESDAY
AND WEDNESDAY. THE FRONT THEN STALLS NOT TOO FAR TO OUR
SOUTH...ALLOWING FOR A QUICK RETURN OF GULF OF MEXICO MOISTURE THE
LATTER PART OF THE WEEK. THE RETURN OF MOISTURE COINCIDES WITH AN
UPPER TROUGH DIGGING ALONG THE WEST COAST. AS SUCH...THE CONTINUED
MENTION OF THUNDERSTORMS IN THE FORECAST FOR THURSDAY THROUGH
SATURDAY LOOKS GOOD.
FIRE WEATHER...
HOT AND VERY DRY CONDITIONS HAVE DEVELOPED WEST OF THE DRYLINE ON
THE CAPROCK THIS AFTERNOON...THOUGH WINDS HAVE BEEN SLOW TO
INCREASE. STILL...DO EXPECT THE WIND SPEEDS TO CONTINUE TO TREND
UPWARD THROUGH LATE THIS AFTERNOON...AND FOR THIS REASON HAVE LEFT
THE RED FLAG WARNING IN PLACE THROUGH 02Z. WINDS WILL TREND DOWNWARD
THIS EVENING...THOUGH THEY MAY COME UP A BIT AGAIN LATE
TONIGHT...AND RH RECOVERIES WILL BE POOR ON THE CAPROCK. WINDS WILL
TURN MORE WESTERLY AND INCREASE AGAIN ON SUNDAY...WITH THE ENTIRE
AREA EXPERIENCING HOT...DRY AND BREEZY CONDITIONS AS THE DRYLINE
PUSHES FURTHER EAST THAN TODAY. SIMILAR TO TODAY...WINDS WILL BE ON
THE FENCE REGARDING MEETING THE RED FLAG CRITERIA...BUT RH VALUES
WILL BE A SLAM DUNK...DROPPING INTO THE SINGLE DIGITS FOR MOST OR
ALL OF THE FA. TOUGH TO PINPOINT WHERE THE STRONGEST WINDS WILL BE
/AND MOSTLY LIKELY LONGER DURATION OF RED FLAG CONDITIONS WILL BE/
BUT CURRENT RUN OF MODELS TEND TO FAVOR THE NORTHERN AND WESTERN
ZONES. DID NOT GET CUTE ATTM AND INSTEAD DECIDED TO ISSUE A FIRE
WEATHER WATCH FOR THE ENTIRE AREA SUNDAY AFTERNOON/EVENING AND WILL
LET LATER SHIFTS DECIDE IF/WHERE A RFD AND RFW WILL BE MOST
APPROPRIATE.
&&
.PRELIMINARY POINT TEMPS/POPS...
FRIONA 54 88 54 84 49 / 0 0 0 0 0
TULIA 56 92 56 89 52 / 0 0 0 0 0
PLAINVIEW 58 92 58 90 53 / 0 0 0 0 0
LEVELLAND 60 93 57 91 54 / 0 0 0 0 0
LUBBOCK 61 94 60 92 55 / 0 0 0 0 0
DENVER CITY 60 92 59 91 55 / 0 0 0 0 0
BROWNFIELD 63 94 60 93 55 / 0 0 0 0 0
CHILDRESS 64 96 62 93 58 / 20 0 0 0 0
SPUR 64 97 64 95 60 / 10 0 0 0 0
ASPERMONT 70 102 65 98 62 / 20 0 0 0 0
&&
.LUB WATCHES/WARNINGS/ADVISORIES...
FIRE WEATHER WATCH FROM SUNDAY AFTERNOON THROUGH SUNDAY EVENING
FOR THE FOLLOWING ZONES: TXZ021>044.
RED FLAG WARNING UNTIL 9 PM CDT THIS EVENING FOR THE FOLLOWING
ZONES: TXZ021>024-027>030-033>036-039>042.
&&
$$
99/99/05
666
FXUS64 KLUB 182019
AFDLUB
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LUBBOCK TX
319 PM CDT SAT MAY 18 2013
.SHORT TERM...
LITTLE CHANGE IN THINKING TO THE ONGOING FORECAST...WITH A RISK
OF SEVERE STORMS ACROSS THE FAR EASTERN ZONES THROUGH THIS
EVENING. ELEVATED TO CRITICAL FIRE WEATHER WILL ALSO DEVELOP
ACROSS MUCH OF THE CAPROCK LATE THIS AFTERNOON...WITH ANOTHER
ROUND OF ELEVATED TO CRITICAL FIRE WEATHER FOR THE ENTIRE FA
SUNDAY AFTERNOON.
MOISTURE CONTINUES TO MIX OUT THANKS TO STRONG HEATING THIS
AFTERNOON...WITH 1930Z TEMPERATURES WELL INTO THE 90S AND
APPROACHING THE TRIPLE DIGIT MARK OFF THE CAPROCK. DEWPOINTS HAVE
FALLEN INTO THE TEENS AND 20S ACROSS MUCH OF THE CAPROCK THOUGH
LOWER TO MIDDLE 50 DEGREE DEWPOINTS WERE HANGING ON ACROSS THE FAR
EASTERN ZONES. THIS EXTREME HEAT AND DECENT MOISTURE BENEATH STEEP
MID-LEVEL LAPSE RATES WERE RESULTING IN STRONG INSTABILITY...WITH THE
LATEST LAPS ANALYSIS SHOWING 2000-3000+ J/KG OF SBCAPE GENERALLY
ALONG AND EAST OF A CHILDRESS TO LAKE ALAN HENRY LINE. SFC
CONVERGENCE IS NOT OVERLY IMPRESSIVE ALONG THE DRYLINE BUT GIVEN THE
STRONG HEATING AND RESULTING WEAKENING CAP...IT STILL APPEARS
ISOLATED TO WIDELY SCATTERED CONVECTION WILL BE POSSIBLE IN THE NEXT
FEW HOURS. THIS ACTIVITY WILL START SOMEWHERE NEAR OUR EAST ROW OF
COUNTIES...THOUGH MAY NOT STAY IN THE CWA FOR LONG. STILL...THE
MAGNITUDE OF THE INSTABILITY AND SUFFICIENT 0-6 KM SHEAR WILL
PROMOTE RAPID INTENSIFICATION FOR ANY STORMS THAT CAN DEVELOP AND
HAVE CONTINUED THE SEVERE MENTION FOR THE EASTERN ROW OF COUNTIES
THROUGH THIS EVENING. THERE IS A CHANCE ADDITIONAL STORM DEVELOPMENT
COULD TAKE PLACE ACROSS THE FAR EAST OR SOUTHEAST ZONES LATER
TONIGHT AS LARGE SCALE ASCENT FROM A NEGATIVELY TILTED TROUGH MOVING
THROUGH THE 4-CORNERS INCREASES. THUS...HAVE MAINTAINED A SLIM
THUNDER CHANCE ACROSS THE SOUTHEASTERN ZONES BEYOND 06Z.
BEYOND THE SEVERE THREAT THROUGH THIS EVENING ACROSS THE EASTERN
ZONES...HOT AND VERY DRY AIR AS SPREAD ACROSS THE CAPROCK RESULTING
IN RH VALUES DROPPING INTO THE SINGLE DIGITS. WINDS HAVE BEEN SLOW
TO INCREASE THIS AFTERNOON BUT SHOULD CONTINUE TO TREND UPWARD
FURTHER ELEVATING THE FIRE DANGER. THE LEAD WAVE WITHIN THE WESTERN
TROUGH WILL EMERGE ACROSS THE CENTRAL PLAINS SUNDAY AND THIS PULL
THE DRYLINE EVER FURTHER EAST...OUT OF THE FA...WITH WARM TO HOT
TEMPERATURES AND GUSTY AND DRY WESTERLY WINDS IN ITS WAKE.
.LONG TERM...
PLAN FEW CHANGES TO THE LONG TERM. MONDAY LOOKS SIMILAR TO SUNDAY
WITH DRY WESTERLY WINDS AND POSSIBLE FIRE WEATHER CONDITIONS. A
COLD FRONT MONDAY NIGHT SHOULD COOL THINGS DOWN A BIT FOR TUESDAY
AND WEDNESDAY. THE FRONT THEN STALLS NOT TOO FAR TO OUR
SOUTH...ALLOWING FOR A QUICK RETURN OF GULF OF MEXICO MOISTURE THE
LATTER PART OF THE WEEK. THE RETURN OF MOISTURE COINCIDES WITH AN
UPPER TROUGH DIGGING ALONG THE WEST COAST. AS SUCH...THE CONTINUED
MENTION OF THUNDERSTORMS IN THE FORECAST FOR THURSDAY THROUGH
SATURDAY LOOKS GOOD.
.FIRE WEATHER...
HOT AND VERY DRY CONDITIONS HAVE DEVELOPED WEST OF THE DRYLINE ON
THE CAPROCK THIS AFTERNOON...THOUGH WINDS HAVE BEEN SLOW TO
INCREASE. STILL...DO EXPECT THE WIND SPEEDS TO CONTINUE TO TREND
UPWARD THROUGH LATE THIS AFTERNOON...AND FOR THIS REASON HAVE LEFT
THE RED FLAG WARNING IN PLACE THROUGH 02Z. WINDS WILL TREND DOWNWARD
THIS EVENING...THOUGH THEY MAY COME UP A BIT AGAIN LATE
TONIGHT...AND RH RECOVERIES WILL BE POOR ON THE CAPROCK. WINDS WILL
TURN MORE WESTERLY AND INCREASE AGAIN ON SUNDAY...WITH THE ENTIRE
AREA EXPERIENCING HOT...DRY AND BREEZY CONDITIONS AS THE DRYLINE
PUSHES FURTHER EAST THAN TODAY. SIMILAR TO TODAY...WINDS WILL BE ON
THE FENCE REGARDING MEETING THE RED FLAG CRITERIA...BUT RH VALUES
WILL BE A SLAM DUNK...DROPPING INTO THE SINGLE DIGITS FOR MOST OR
ALL OF THE FA. TOUGH TO PINPOINT WHERE THE STRONGEST WINDS WILL BE
/AND MOSTLY LIKELY LONGER DURATION OF RED FLAG CONDITIONS WILL BE/
BUT CURRENT RUN OF MODELS TEND TO FAVOR THE NORTHERN AND WESTERN
ZONES. DID NOT GET CUTE ATTM AND INSTEAD DECIDED TO ISSUE A FIRE
WEATHER WATCH FOR THE ENTIRE AREA SUNDAY AFTERNOON/EVENING AND WILL
LET LATER SHIFTS DECIDE IF/WHERE A RFD AND RFW WILL BE MOST
APPROPRIATE.
.PRELIMINARY POINT TEMPS/POPS...
FRIONA 54 88 54 84 49 / 0 0 0 0 0
TULIA 56 92 56 89 52 / 0 0 0 0 0
PLAINVIEW 58 92 58 90 53 / 0 0 0 0 0
LEVELLAND 60 93 57 91 54 / 0 0 0 0 0
LUBBOCK 61 94 60 92 55 / 0 0 0 0 0
DENVER CITY 60 92 59 91 55 / 0 0 0 0 0
BROWNFIELD 63 94 60 93 55 / 0 0 0 0 0
CHILDRESS 64 96 62 93 58 / 20 0 0 0 0
SPUR 64 97 64 95 60 / 10 0 0 0 0
ASPERMONT 70 102 65 98 62 / 20 0 0 0 0
&&
.LUB WATCHES/WARNINGS/ADVISORIES...
FIRE WEATHER WATCH FROM SUNDAY AFTERNOON THROUGH SUNDAY EVENING
FOR THE FOLLOWING ZONES: TXZ021>044.
RED FLAG WARNING UNTIL 9 PM CDT THIS EVENING FOR THE FOLLOWING
ZONES: TXZ021>024-027>030-033>036-039>042.
&&
$$
23/04
674
FXUS64 KLUB 181744
AFDLUB
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LUBBOCK TX
1244 PM CDT SAT MAY 18 2013
.AVIATION...
EXPECT VFR CONDITIONS TO REMAIN AT THE TERMINALS THIS TAF
CYCLE...WITH BREEZY SOUTH TO SOUTHWESTERLY WINDS THIS AFTERNOON
AND BREEZY WESTERLY WINDS TOMORROW AFTERNOON. KCDS WILL HAVE AN
OUTSIDE CHANCE OF A STORM LATE THIS AFTERNOON INTO EARLY THIS
EVENING...BUT PROSPECTS OF A DIRECT IMPACT ARE TOO LOW TO INCLUDE
IN THE TAF ATTM.
&&
.PREV DISCUSSION... /ISSUED 1131 AM CDT SAT MAY 18 2013/
UPDATE...
SHORTWAVE TROUGH THAT BROUGHT THE EXCITEMENT IN TERMS OF
HEAT BURSTS...SPOTTY LIGHT RAIN AND A FEW ELEVATED STORMS WAS NOW
EXITING TO OUR NORTHEAST...WITH THE NEXT UA TROUGH OF CONSEQUENCE
APPROACHING THROUGH THE DESERT SOUTHWEST. LIFT WITH THE WESTERN
NEGATIVELY TILTED TROUGH WAS INCREASING ACROSS MUCH OF NM AND WILL
CONTINUE TO SPREAD EASTWARD THIS AFTERNOON AND TONIGHT. THIS WILL
PROVIDE AT LEAST SOME UPPER LEVEL SUPPORT BY PEAK HEATING WITH THE
GREATEST UPPER FORCING PROGGED TO MOVE ACROSS LATE TONIGHT. AT THE
SFC...SOUTHERLY FLOW HAS DRAWN DEWPOINTS INTO THE LOWER AND MIDDLE
60S ACROSS THE EASTERN ZONES...THOUGH VEERING FLOW WAS ALSO
BRINGING IN MUCH DRIER AIR ACROSS THE WESTERN ZONES. IN
FACT...HUMIDITIES WERE ALREADY BELOW 10 PERCENT ACROSS THE FAR
NORTHWEST ZONES...WHERE COUPLED WITH INCREASING WINDS...THE FIRE
DANGER WILL BE HIGH. IT STILL APPEARS THE DRYLINE WILL SHARPEN
SOMEWHERE IN CLOSE PROXIMITY TO OUR EASTERN MOST ZONES BY MID TO
LATE AFTERNOON. STRONG HEATING/MIXING...WITH HIGHS CLIMBING UP
INTO THE TRIPLE DIGITS...COUPLED WITH CONVERGENCE ALONG THE
DRYLINE AND WEAK UPPER SUPPORT SHOULD BE ENOUGH TO BREAK THE
CAP...WITH ISOLATED TO WIDELY SCATTERED MOIST CONVECTION EXPECTED
TO DEVELOP AFTER 20Z. STRONG INSTABILITY EAST OF THE DRYLINE
COUPLED WITH SUFFICIENT DEEP LAYER SHEAR WILL ALLOW STORMS TO
RAPIDLY BECOME SEVERE...WITH SUPERCELLULAR MODES LIKELY.
RELATIVELY HIGH LCLS AND RATHER WEAK 0-1 KM SHEAR WOULD SUGGEST
LARGE HAIL AND DAMAGING WIND GUSTS WILL BE THE PRIMARY MODE WITH
THE INITIAL DEVELOPMENT...THOUGH STRONG INSTABILITY COULD
COMPENSATE SOMEWHAT AND PROVIDE A LOW TORNADO CHANCE. LOW-LEVEL
WIND SHEAR WILL INCREASE THIS EVENING AS THE LOWER WIND FIELDS
STRENGTHEN AND BACK AND LCLS GRADUALLY LOWER. BIGGEST QUESTION
FOR OUR CWA IS IF AND FOR HOW LONG CONVECTION CAN STAY IN OUR
AREA. OF THE GUIDANCE THAT DEVELOPS STORMS IN OUR EASTERN ZONES
LATE THIS AFTERNOON...MOST SHOW THE ACTIVITY QUICKLY SHIFTING EAST
OF THE FA...WHICH WOULD KEEP OUR WINDOW FOR SEVERE WEATHER QUITE
NARROW. THERE MAY BE A RISK FOR REDEVELOPMENT ALONG THE DRYLINE IN
OUR FAR EASTERN ZONES LATE TONIGHT AS THE LARGE SCALE SUPPORT
PEAKS...THOUGH MOST GUIDANCE DOES NOT SHOW THIS SCENARIO...WITH
THE COOLING LOWER ATMOSPHERE REMAINING CAPPED. WEST OF THE
DRYLINE...ELEVATED TO CRITICAL FIRE WEATHER CONDITIONS WILL EXIST
AND THE RED FLAG WARNING AND FIRE DANGER STATEMENT REMAIN VALID
FOR THIS AFTERNOON AND EVENING. THE ONGOING FORECAST HAD A GOOD
HANDLE ON ALL OF THIS AND ONLY MINOR TWEAKS WERE MADE THIS MORNING.
PREV DISCUSSION... /ISSUED 517 AM CDT SAT MAY 18 2013/
SHORT TERM...
TWO BANDS OF VERY LIGHT VIRGA SHOWERS CONTINUE MOVING NORTHEAST
ACROSS THE FAR SOUTHEASTERN TEXAS PANHANDLE AND ROLLING PLAINS THIS
MORNING. THIS IS DUE TO A WEAK UPPER LEVEL DISTURBANCE MOVING
THROUGH ALONG WITH A LOW LEVEL JET INTERACTING WITH THE DRYLINE.
THIS SHOULD WRAP UP BY SUNRISE BEFORE THE MERCURY STARTS TO CLIMB
AGAIN. DEEP MIXING WILL OCCUR AS SKIES CLEAR FROM WEST TO EAST THIS
MORNING AND LEAD TO HIGHS IN THE MID 90S ACROSS THE NORTHWEST TO THE
LOW 100S INTO THE ROLLING PLAINS. CHILDRESS IS FORECAST TO HIT 101
DEGREES TODAY WHICH WOULD BREAK THE PREVIOUS RECORD OF 99 FOR THE
DATE.
AN UPPER TROUGH CURRENTLY ENTERING THE GULF OF CALIFORNIA WILL
CONTINUE TO SLIDE EAST TODAY AND INCREASE FORCING FOR ASCENT
ACROSS THE REGION AS HEIGHTS FALL. THE DRYLINE WILL MIX QUICKLY EAST
AHEAD OF THIS FEATURE...POSSIBLY MIXING EAST OF THE ROLLING PLAINS
THIS AFTERNOON. HOWEVER...A DEEPENING SURFACE LOW ACROSS THE
TEXAS/OKLAHOMA PANHANDLES SHOULD KEEP THE DRYLINE WITHIN REACH SO
THAT IT RETREATS BACK ACROSS THE ROLLING PLAINS AND EXTREME
SOUTHEAST PANHANDLE THIS EVENING.
DEEP LAYER SUPPORT WILL BE MAXIMIZED THIS EVENING AND EARLY TONIGHT
AS THE PREVIOUSLY MENTIONED NEGATIVELY TILTED TROUGH SWINGS INTO
SOUTH CENTRAL NEW MEXICO. AN INTENSIFYING LOW LEVEL JET WILL ALSO
DEVELOP AND USHER IN RICHER MOISTURE AHEAD OF THE
DRYLINE...LENGTHENING HODOGRAPHS AND STRENGTHENING SHEAR PROFILES TO
SUPPORT ORGANIZED UPDRAFTS. EVEN THOUGH COVERAGE MAY BE
LIMITED...BELIEVE WHAT DOES DEVELOP WILL BE STRONG TO
SEVERE...CAPABLE OF PRODUCING LARGE HAIL...GUSTY WINDS TO 60
MPH...AND AN ISOLATED TORNADO. STORM ROOTS WILL BECOME INCREASINGLY
ELEVATED AS SURFACE COOLING COMMENCES POST-SUNSET...LEADING TO MORE
OF A HAIL THREAT AS THE EVENING WEARS ON. CONDITIONS WILL DRY OUT
AFTER MIDNIGHT AS THE TROUGH AND SURFACE LOW PUSH EAST AND PULL
DRIER AIR ACROSS THE AREA.
LONG TERM...
AN ACTIVE WEATHER PATTERN IN STORE DURING THE NEXT WEEK WHICH SOME
EXCITEMENT INTO NEXT WEEKEND...MORE ON THAT LATER.
UPPER LEVEL LOW WILL BECOME ESTABLISHED FROM THE NEG TILTED TROUGH
ACROSS THE WESTERN USA. THIS LOW WILL UNDERGO MATURATION LATE THIS
WEEKEND INTO EARLY NEXT WEEK ACROSS THE NORTH CENTRAL PLAINS WHILE A
LOBE OF ENERGY ROTATES AROUND THIS PARENT LOW REACHING THE FOUR
CORNERS BY MONDAY AFTERNOON. BY LATE TUESDAY AFTERNOON...
NORTHWESTERLY FLOW RETURNS TO THE AREA AS ANOTHER DEEP LOW COMES
ASHORE THE PACIFIC NORTHWEST COAST. RIDGING WILL BUILD INTO THE
CENTRAL CONUS SERVING TO BLOCK EWRD PROGRESSION OF NORTHWESTERN LOW.
ON SUNDAY MORNING...DRYLINE SHOULD START OFF ACROSS OUR EASTERN
ZONES THUS LEAVING THE AREA HOT AND DRY. IT WOULD APPEAR THAT
ELEVATED TO CRITICAL FIRE WEATHER CONDITIONS WILL OCCUR ONCE AGAIN
ON SUNDAY AFTERNOON AS WIND SPEEDS RAMP UP TO THE 20 TO 25 MPH
RANGE. NWP IS STRONGER WITH THE LATE SUNDAY COLD FRONT THIS
MORNING AND GIVEN THE STRENGTH AND RESULTS OF THIS MORNINGS TROUGH
WHICH GENERATED SOME HIGH BASED SHOWER ACTIVITY...THIS NEW FOUND
STRENGTH APPEARS PLAUSIBLE. THE NAM IS MOST ASSERTIVE WITH THE
PROGRESSION OF THE FEATURE. WHICH BY IN LARGE MAY MAKE IT
MOST...BUT PERHAPS NOT ALL THE WAY ACROSS THE CWFA. SURFACE LOW
LOOKS TO REMAIN OVER THE EASTERN HALF OF THE AREA ON MONDAY
KEEPING THINGS QUITE WARM AND DRY. INTO THE EVENING HOURS...A MUCH
MORE PRONOUNCED COLD FRONT MAKES THROUGH WITH THE GFS DEPICTING
POST-FRONTAL PRECIPITATION. HOWEVER...THE MODEL APPEARS TOO MOIST
AND WILL CONTINUE THE FCST THINKING THAT THIS WILL YIELD YET
ANOTHER DRY FRONTAL PASSAGE THOUGH AREAS TO OUR NORTH AND EAST
WILL HAVE A BETTER CHANCE OF STORMS. FCST GUIDANCE HAS TRENDED
LOWER ON TUESDAY/S HIGH AND GIVEN THE EVOLUTION OF THE
SYSTEM...THIS TOO SEEMS REASONABLE AND ADJUST TEMPS COOLER TUE/WED
AS A RESULT. INTO LATE WEEK...MORE EXCITING PROSPECTS FOR
PRECIPITATION ARE LOOKING TO COME TOGETHER AS PERSISTENT SWRLY
FLOW ALOFT ALLOWS INCREASING MOISTURE INTO THE REGION THEN
ASSISTED BY A SLUG OF PACIFIC MOISTURE LATE THURSDAY. WITH PWAT
VALUES INCREASING UP TO WELL OVER AN INCH THIS LOOKS LIKE IT COULD
YIELD THE BEST PROMISE OF MEANINGFUL RAINFALL IN SOME TIME...AND
WE`LL TAKE WHAT WE CAN GET!
FIRE WEATHER...
DAY 1
CRITICAL FIRE WEATHER CONDITIONS WILL DEVELOP WEST OF AN EASTWARD
MIXING DRYLINE THIS AFTERNOON. THE PREVIOUSLY ADVERTISED FIRE
WEATHER WATCH HAS BEEN UPGRADED TO A RED FLAG WARNING ACROSS
WESTERN AND CENTRAL PORTIONS OF THE EXTREME SOUTHERN TEXAS
PANHANDLE...SOUTH PLAINS...AND FAR WESTERN ROLLING PLAINS.
TEMPERATURES WILL CLIMB INTO THE MID 90S TO NEAR 100 DEGREES WITH
MINIMUM RELATIVE HUMIDITIES IN THE SINGLE DIGITS. 20 FOOT WINDS
WILL INCREASE TO 20 MPH OR SLIGHTLY ABOVE THUS WARRANTING THE
UPGRADE TO A WARNING. WILL ISSUE A RANGELAND FIRE DANGER STATEMENT
FOR AREAS JUST EAST OF THOSE IN THE WARNING.
DAY 2-3
CRITICAL FIRE WEATHER CONDITIONS WILL BE POSSIBLE ONCE AGAIN
SUNDAY AFTERNOON OVER MUCH OF THE SAME AREA COVERED BY THE WARNING
THIS MORNING AS DRY CONDITIONS COMBINE WITH BREEZY AFTERNOON
WINDS. TO AVOID PRODUCT CONFUSION...WILL HOLD OFF ON SECOND RED
FLAG PRODUCT FOR SUNDAY AT THIS TIME. WHILE FIRE WEATHER
CONDITIONS MAY EASE ON MONDAY TO SOME EXTENT...ELEVATED TO NEAR
CRITICAL CONDITIONS MAY OCCUR DURING THE AFTERNOON AS WELL.
&&
.PRELIMINARY POINT TEMPS/POPS...
FRIONA 56 87 54 83 49 / 0 0 0 0 0
TULIA 57 92 56 88 52 / 0 0 0 0 0
PLAINVIEW 57 94 58 89 53 / 0 0 0 0 0
LEVELLAND 59 94 57 90 54 / 0 0 0 0 0
LUBBOCK 59 96 60 91 55 / 0 0 0 0 0
DENVER CITY 60 92 59 90 55 / 0 0 0 0 0
BROWNFIELD 60 95 60 92 55 / 0 0 0 0 0
CHILDRESS 63 95 62 92 58 / 20 0 0 0 0
SPUR 59 98 64 94 60 / 10 0 0 0 0
ASPERMONT 69 99 65 97 62 / 20 0 0 0 0
&&
.LUB WATCHES/WARNINGS/ADVISORIES...
RED FLAG WARNING UNTIL 9 PM CDT THIS EVENING FOR THE FOLLOWING
ZONES: TXZ021>024-027>030-033>036-039>042.
&&
$$
23/99/99
184
FXUS64 KLUB 181631 AAA
AFDLUB
AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE LUBBOCK TX
1131 AM CDT SAT MAY 18 2013
.UPDATE...
SHORTWAVE TROUGH THAT BROUGHT THE EXCITEMENT IN TERMS OF
HEAT BURSTS...SPOTTY LIGHT RAIN AND A FEW ELEVATED STORMS WAS NOW
EXITING TO OUR NORTHEAST...WITH THE NEXT UA TROUGH OF CONSEQUENCE
APPROACHING THROUGH THE DESERT SOUTHWEST. LIFT WITH THE WESTERN
NEGATIVELY TILTED TROUGH WAS INCREASING ACROSS MUCH OF NM AND WILL
CONTINUE TO SPREAD EASTWARD THIS AFTERNOON AND TONIGHT. THIS WILL
PROVIDE AT LEAST SOME UPPER LEVEL SUPPORT BY PEAK HEATING WITH THE
GREATEST UPPER FORCING PROGGED TO MOVE ACROSS LATE TONIGHT. AT THE
SFC...SOUTHERLY FLOW HAS DRAWN DEWPOINTS INTO THE LOWER AND MIDDLE
60S ACROSS THE EASTERN ZONES...THOUGH VEERING FLOW WAS ALSO
BRINGING IN MUCH DRIER AIR ACROSS THE WESTERN ZONES. IN
FACT...HUMIDITIES WERE ALREADY BELOW 10 PERCENT ACROSS THE FAR
NORTHWEST ZONES...WHERE COUPLED WITH INCREASING WINDS...THE FIRE
DANGER WILL BE HIGH. IT STILL APPEARS THE DRYLINE WILL SHARPEN
SOMEWHERE IN CLOSE PROXIMITY TO OUR EASTERN MOST ZONES BY MID TO
LATE AFTERNOON. STRONG HEATING/MIXING...WITH HIGHS CLIMBING UP
INTO THE TRIPLE DIGITS...COUPLED WITH CONVERGENCE ALONG THE
DRYLINE AND WEAK UPPER SUPPORT SHOULD BE ENOUGH TO BREAK THE
CAP...WITH ISOLATED TO WIDELY SCATTERED MOIST CONVECTION EXPECTED
TO DEVELOP AFTER 20Z. STRONG INSTABILITY EAST OF THE DRYLINE
COUPLED WITH SUFFICIENT DEEP LAYER SHEAR WILL ALLOW STORMS TO
RAPIDLY BECOME SEVERE...WITH SUPERCELLULAR MODES LIKELY.
RELATIVELY HIGH LCLS AND RATHER WEAK 0-1 KM SHEAR WOULD SUGGEST
LARGE HAIL AND DAMAGING WIND GUSTS WILL BE THE PRIMARY MODE WITH
THE INITIAL DEVELOPMENT...THOUGH STRONG INSTABILITY COULD
COMPENSATE SOMEWHAT AND PROVIDE A LOW TORNADO CHANCE. LOW-LEVEL
WIND SHEAR WILL INCREASE THIS EVENING AS THE LOWER WIND FIELDS
STRENGTHEN AND BACK AND LCLS GRADUALLY LOWER. BIGGEST QUESTION
FOR OUR CWA IS IF AND FOR HOW LONG CONVECTION CAN STAY IN OUR
AREA. OF THE GUIDANCE THAT DEVELOPS STORMS IN OUR EASTERN ZONES
LATE THIS AFTERNOON...MOST SHOW THE ACTIVITY QUICKLY SHIFTING EAST
OF THE FA...WHICH WOULD KEEP OUR WINDOW FOR SEVERE WEATHER QUITE
NARROW. THERE MAY BE A RISK FOR REDEVELOPMENT ALONG THE DRYLINE IN
OUR FAR EASTERN ZONES LATE TONIGHT AS THE LARGE SCALE SUPPORT
PEAKS...THOUGH MOST GUIDANCE DOES NOT SHOW THIS SCENARIO...WITH
THE COOLING LOWER ATMOSPHERE REMAINING CAPPED. WEST OF THE
DRYLINE...ELEVATED TO CRITICAL FIRE WEATHER CONDITIONS WILL EXIST
AND THE RED FLAG WARNING AND FIRE DANGER STATEMENT REMAIN VALID
FOR THIS AFTERNOON AND EVENING. THE ONGOING FORECAST HAD A GOOD
HANDLE ON ALL OF THIS AND ONLY MINOR TWEAKS WERE MADE THIS MORNING.
&&
.PREV DISCUSSION... /ISSUED 648 AM CDT SAT MAY 18 2013/
AVIATION...
VFR CONDITIONS LOOK TO PREVAIL THROUGH THE PERIOD AS FOG HAS
REMAINED NORTHEAST OF KCDS. SOUTH TO SOUTHWEST WINDS WILL BECOME
BREEZY BY MID TO LATE MORNING AS A LOW PRESSURE SYSTEM STRENGTHENS
ACROSS THE TEXAS AND OKLAHOMA PANHANDLES. EXPECT SPEEDS TO
INCREASE TO NEAR 20 KNOTS WITH GUSTS OF 30 KNOTS. ISOLATED STORMS
WILL DEVELOP ALONG AND AHEAD OF THE DRYLINE POSSIBLY AFFECTING
KCDS LATE THIS AFTERNOON AND THIS EVENING...BUT CONFIDENCE IN A
STORM WITHIN 5 NM OF THE TERMINAL IS NOT CURRENTLY HIGH ENOUGH TO
WARRANT MENTION AT THIS TIME. SOUTH WINDS WILL REMAIN ELEVATED
ABOVE THE 12 KNOT THRESHOLD TONIGHT.
PREV DISCUSSION... /ISSUED 517 AM CDT SAT MAY 18 2013/
SHORT TERM...
TWO BANDS OF VERY LIGHT VIRGA SHOWERS CONTINUE MOVING NORTHEAST
ACROSS THE FAR SOUTHEASTERN TEXAS PANHANDLE AND ROLLING PLAINS THIS
MORNING. THIS IS DUE TO A WEAK UPPER LEVEL DISTURBANCE MOVING
THROUGH ALONG WITH A LOW LEVEL JET INTERACTING WITH THE DRYLINE.
THIS SHOULD WRAP UP BY SUNRISE BEFORE THE MERCURY STARTS TO CLIMB
AGAIN. DEEP MIXING WILL OCCUR AS SKIES CLEAR FROM WEST TO EAST THIS
MORNING AND LEAD TO HIGHS IN THE MID 90S ACROSS THE NORTHWEST TO THE
LOW 100S INTO THE ROLLING PLAINS. CHILDRESS IS FORECAST TO HIT 101
DEGREES TODAY WHICH WOULD BREAK THE PREVIOUS RECORD OF 99 FOR THE
DATE.
AN UPPER TROUGH CURRENTLY ENTERING THE GULF OF CALIFORNIA WILL
CONTINUE TO SLIDE EAST TODAY AND INCREASE FORCING FOR ASCENT
ACROSS THE REGION AS HEIGHTS FALL. THE DRYLINE WILL MIX QUICKLY EAST
AHEAD OF THIS FEATURE...POSSIBLY MIXING EAST OF THE ROLLING PLAINS
THIS AFTERNOON. HOWEVER...A DEEPENING SURFACE LOW ACROSS THE
TEXAS/OKLAHOMA PANHANDLES SHOULD KEEP THE DRYLINE WITHIN REACH SO
THAT IT RETREATS BACK ACROSS THE ROLLING PLAINS AND EXTREME
SOUTHEAST PANHANDLE THIS EVENING.
DEEP LAYER SUPPORT WILL BE MAXIMIZED THIS EVENING AND EARLY TONIGHT
AS THE PREVIOUSLY MENTIONED NEGATIVELY TILTED TROUGH SWINGS INTO
SOUTH CENTRAL NEW MEXICO. AN INTENSIFYING LOW LEVEL JET WILL ALSO
DEVELOP AND USHER IN RICHER MOISTURE AHEAD OF THE
DRYLINE...LENGTHENING HODOGRAPHS AND STRENGTHENING SHEAR PROFILES TO
SUPPORT ORGANIZED UPDRAFTS. EVEN THOUGH COVERAGE MAY BE
LIMITED...BELIEVE WHAT DOES DEVELOP WILL BE STRONG TO
SEVERE...CAPABLE OF PRODUCING LARGE HAIL...GUSTY WINDS TO 60
MPH...AND AN ISOLATED TORNADO. STORM ROOTS WILL BECOME INCREASINGLY
ELEVATED AS SURFACE COOLING COMMENCES POST-SUNSET...LEADING TO MORE
OF A HAIL THREAT AS THE EVENING WEARS ON. CONDITIONS WILL DRY OUT
AFTER MIDNIGHT AS THE TROUGH AND SURFACE LOW PUSH EAST AND PULL
DRIER AIR ACROSS THE AREA.
LONG TERM...
AN ACTIVE WEATHER PATTERN IN STORE DURING THE NEXT WEEK WHICH SOME
EXCITEMENT INTO NEXT WEEKEND...MORE ON THAT LATER.
UPPER LEVEL LOW WILL BECOME ESTABLISHED FROM THE NEG TILTED TROUGH
ACROSS THE WESTERN USA. THIS LOW WILL UNDERGO MATURATION LATE THIS
WEEKEND INTO EARLY NEXT WEEK ACROSS THE NORTH CENTRAL PLAINS WHILE A
LOBE OF ENERGY ROTATES AROUND THIS PARENT LOW REACHING THE FOUR
CORNERS BY MONDAY AFTERNOON. BY LATE TUESDAY AFTERNOON...
NORTHWESTERLY FLOW RETURNS TO THE AREA AS ANOTHER DEEP LOW COMES
ASHORE THE PACIFIC NORTHWEST COAST. RIDGING WILL BUILD INTO THE
CENTRAL CONUS SERVING TO BLOCK EWRD PROGRESSION OF NORTHWESTERN LOW.
ON SUNDAY MORNING...DRYLINE SHOULD START OFF ACROSS OUR EASTERN
ZONES THUS LEAVING THE AREA HOT AND DRY. IT WOULD APPEAR THAT
ELEVATED TO CRITICAL FIRE WEATHER CONDITIONS WILL OCCUR ONCE AGAIN
ON SUNDAY AFTERNOON AS WIND SPEEDS RAMP UP TO THE 20 TO 25 MPH
RANGE. NWP IS STRONGER WITH THE LATE SUNDAY COLD FRONT THIS
MORNING AND GIVEN THE STRENGTH AND RESULTS OF THIS MORNINGS TROUGH
WHICH GENERATED SOME HIGH BASED SHOWER ACTIVITY...THIS NEW FOUND
STRENGTH APPEARS PLAUSIBLE. THE NAM IS MOST ASSERTIVE WITH THE
PROGRESSION OF THE FEATURE. WHICH BY IN LARGE MAY MAKE IT
MOST...BUT PERHAPS NOT ALL THE WAY ACROSS THE CWFA. SURFACE LOW
LOOKS TO REMAIN OVER THE EASTERN HALF OF THE AREA ON MONDAY
KEEPING THINGS QUITE WARM AND DRY. INTO THE EVENING HOURS...A MUCH
MORE PRONOUNCED COLD FRONT MAKES THROUGH WITH THE GFS DEPICTING
POST-FRONTAL PRECIPITATION. HOWEVER...THE MODEL APPEARS TOO MOIST
AND WILL CONTINUE THE FCST THINKING THAT THIS WILL YIELD YET
ANOTHER DRY FRONTAL PASSAGE THOUGH AREAS TO OUR NORTH AND EAST
WILL HAVE A BETTER CHANCE OF STORMS. FCST GUIDANCE HAS TRENDED
LOWER ON TUESDAY/S HIGH AND GIVEN THE EVOLUTION OF THE
SYSTEM...THIS TOO SEEMS REASONABLE AND ADJUST TEMPS COOLER TUE/WED
AS A RESULT. INTO LATE WEEK...MORE EXCITING PROSPECTS FOR
PRECIPITATION ARE LOOKING TO COME TOGETHER AS PERSISTENT SWRLY
FLOW ALOFT ALLOWS INCREASING MOISTURE INTO THE REGION THEN
ASSISTED BY A SLUG OF PACIFIC MOISTURE LATE THURSDAY. WITH PWAT
VALUES INCREASING UP TO WELL OVER AN INCH THIS LOOKS LIKE IT COULD
YIELD THE BEST PROMISE OF MEANINGFUL RAINFALL IN SOME TIME...AND
WE`LL TAKE WHAT WE CAN GET!
FIRE WEATHER...
DAY 1
CRITICAL FIRE WEATHER CONDITIONS WILL DEVELOP WEST OF AN EASTWARD
MIXING DRYLINE THIS AFTERNOON. THE PREVIOUSLY ADVERTISED FIRE
WEATHER WATCH HAS BEEN UPGRADED TO A RED FLAG WARNING ACROSS
WESTERN AND CENTRAL PORTIONS OF THE EXTREME SOUTHERN TEXAS
PANHANDLE...SOUTH PLAINS...AND FAR WESTERN ROLLING PLAINS.
TEMPERATURES WILL CLIMB INTO THE MID 90S TO NEAR 100 DEGREES WITH
MINIMUM RELATIVE HUMIDITIES IN THE SINGLE DIGITS. 20 FOOT WINDS
WILL INCREASE TO 20 MPH OR SLIGHTLY ABOVE THUS WARRANTING THE
UPGRADE TO A WARNING. WILL ISSUE A RANGELAND FIRE DANGER STATEMENT
FOR AREAS JUST EAST OF THOSE IN THE WARNING.
DAY 2-3
CRITICAL FIRE WEATHER CONDITIONS WILL BE POSSIBLE ONCE AGAIN
SUNDAY AFTERNOON OVER MUCH OF THE SAME AREA COVERED BY THE WARNING
THIS MORNING AS DRY CONDITIONS COMBINE WITH BREEZY AFTERNOON
WINDS. TO AVOID PRODUCT CONFUSION...WILL HOLD OFF ON SECOND RED
FLAG PRODUCT FOR SUNDAY AT THIS TIME. WHILE FIRE WEATHER
CONDITIONS MAY EASE ON MONDAY TO SOME EXTENT...ELEVATED TO NEAR
CRITICAL CONDITIONS MAY OCCUR DURING THE AFTERNOON AS WELL.
&&
.PRELIMINARY POINT TEMPS/POPS...
FRIONA 94 56 87 54 83 / 0 0 0 0 0
TULIA 99 57 92 56 88 / 10 0 0 0 0
PLAINVIEW 97 57 94 58 89 / 10 0 0 0 0
LEVELLAND 98 59 94 57 90 / 0 0 0 0 0
LUBBOCK 99 59 96 60 91 / 0 0 0 0 0
DENVER CITY 96 60 92 59 90 / 0 0 0 0 0
BROWNFIELD 99 60 95 60 92 / 0 0 0 0 0
CHILDRESS 101 63 95 62 92 / 20 20 0 0 0
SPUR 103 59 98 64 94 / 10 10 0 0 0
ASPERMONT 102 69 99 65 97 / 20 20 0 0 0
&&
.LUB WATCHES/WARNINGS/ADVISORIES...
RED FLAG WARNING UNTIL 9 PM CDT THIS EVENING FOR THE FOLLOWING
ZONES: TXZ021>024-027>030-033>036-039>042.
&&
$$
23/99
629
FXUS64 KLUB 181148
AFDLUB
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LUBBOCK TX
648 AM CDT SAT MAY 18 2013
.AVIATION...
VFR CONDITIONS LOOK TO PREVAIL THROUGH THE PERIOD AS FOG HAS
REMAINED NORTHEAST OF KCDS. SOUTH TO SOUTHWEST WINDS WILL BECOME
BREEZY BY MID TO LATE MORNING AS A LOW PRESSURE SYSTEM STRENGTHENS
ACROSS THE TEXAS AND OKLAHOMA PANHANDLES. EXPECT SPEEDS TO
INCREASE TO NEAR 20 KNOTS WITH GUSTS OF 30 KNOTS. ISOLATED STORMS
WILL DEVELOP ALONG AND AHEAD OF THE DRYLINE POSSIBLY AFFECTING
KCDS LATE THIS AFTERNOON AND THIS EVENING...BUT CONFIDENCE IN A
STORM WITHIN 5 NM OF THE TERMINAL IS NOT CURRENTLY HIGH ENOUGH TO
WARRANT MENTION AT THIS TIME. SOUTH WINDS WILL REMAIN ELEVATED
ABOVE THE 12 KNOT THRESHOLD TONIGHT.
&&
.PREV DISCUSSION... /ISSUED 517 AM CDT SAT MAY 18 2013/
SHORT TERM...
TWO BANDS OF VERY LIGHT VIRGA SHOWERS CONTINUE MOVING NORTHEAST
ACROSS THE FAR SOUTHEASTERN TEXAS PANHANDLE AND ROLLING PLAINS THIS
MORNING. THIS IS DUE TO A WEAK UPPER LEVEL DISTURBANCE MOVING
THROUGH ALONG WITH A LOW LEVEL JET INTERACTING WITH THE DRYLINE.
THIS SHOULD WRAP UP BY SUNRISE BEFORE THE MERCURY STARTS TO CLIMB
AGAIN. DEEP MIXING WILL OCCUR AS SKIES CLEAR FROM WEST TO EAST THIS
MORNING AND LEAD TO HIGHS IN THE MID 90S ACROSS THE NORTHWEST TO THE
LOW 100S INTO THE ROLLING PLAINS. CHILDRESS IS FORECAST TO HIT 101
DEGREES TODAY WHICH WOULD BREAK THE PREVIOUS RECORD OF 99 FOR THE
DATE.
AN UPPER TROUGH CURRENTLY ENTERING THE GULF OF CALIFORNIA WILL
CONTINUE TO SLIDE EAST TODAY AND INCREASE FORCING FOR ASCENT
ACROSS THE REGION AS HEIGHTS FALL. THE DRYLINE WILL MIX QUICKLY EAST
AHEAD OF THIS FEATURE...POSSIBLY MIXING EAST OF THE ROLLING PLAINS
THIS AFTERNOON. HOWEVER...A DEEPENING SURFACE LOW ACROSS THE
TEXAS/OKLAHOMA PANHANDLES SHOULD KEEP THE DRYLINE WITHIN REACH SO
THAT IT RETREATS BACK ACROSS THE ROLLING PLAINS AND EXTREME
SOUTHEAST PANHANDLE THIS EVENING.
DEEP LAYER SUPPORT WILL BE MAXIMIZED THIS EVENING AND EARLY TONIGHT
AS THE PREVIOUSLY MENTIONED NEGATIVELY TILTED TROUGH SWINGS INTO
SOUTH CENTRAL NEW MEXICO. AN INTENSIFYING LOW LEVEL JET WILL ALSO
DEVELOP AND USHER IN RICHER MOISTURE AHEAD OF THE
DRYLINE...LENGTHENING HODOGRAPHS AND STRENGTHENING SHEAR PROFILES TO
SUPPORT ORGANIZED UPDRAFTS. EVEN THOUGH COVERAGE MAY BE
LIMITED...BELIEVE WHAT DOES DEVELOP WILL BE STRONG TO
SEVERE...CAPABLE OF PRODUCING LARGE HAIL...GUSTY WINDS TO 60
MPH...AND AN ISOLATED TORNADO. STORM ROOTS WILL BECOME INCREASINGLY
ELEVATED AS SURFACE COOLING COMMENCES POST-SUNSET...LEADING TO MORE
OF A HAIL THREAT AS THE EVENING WEARS ON. CONDITIONS WILL DRY OUT
AFTER MIDNIGHT AS THE TROUGH AND SURFACE LOW PUSH EAST AND PULL
DRIER AIR ACROSS THE AREA.
LONG TERM...
AN ACTIVE WEATHER PATTERN IN STORE DURING THE NEXT WEEK WHICH SOME
EXCITEMENT INTO NEXT WEEKEND...MORE ON THAT LATER.
UPPER LEVEL LOW WILL BECOME ESTABLISHED FROM THE NEG TILTED TROUGH
ACROSS THE WESTERN USA. THIS LOW WILL UNDERGO MATURATION LATE THIS
WEEKEND INTO EARLY NEXT WEEK ACROSS THE NORTH CENTRAL PLAINS WHILE A
LOBE OF ENERGY ROTATES AROUND THIS PARENT LOW REACHING THE FOUR
CORNERS BY MONDAY AFTERNOON. BY LATE TUESDAY AFTERNOON...
NORTHWESTERLY FLOW RETURNS TO THE AREA AS ANOTHER DEEP LOW COMES
ASHORE THE PACIFIC NORTHWEST COAST. RIDGING WILL BUILD INTO THE
CENTRAL CONUS SERVING TO BLOCK EWRD PROGRESSION OF NORTHWESTERN LOW.
ON SUNDAY MORNING...DRYLINE SHOULD START OFF ACROSS OUR EASTERN
ZONES THUS LEAVING THE AREA HOT AND DRY. IT WOULD APPEAR THAT
ELEVATED TO CRITICAL FIRE WEATHER CONDITIONS WILL OCCUR ONCE AGAIN
ON SUNDAY AFTERNOON AS WIND SPEEDS RAMP UP TO THE 20 TO 25 MPH
RANGE. NWP IS STRONGER WITH THE LATE SUNDAY COLD FRONT THIS
MORNING AND GIVEN THE STRENGTH AND RESULTS OF THIS MORNINGS TROUGH
WHICH GENERATED SOME HIGH BASED SHOWER ACTIVITY...THIS NEW FOUND
STRENGTH APPEARS PLAUSIBLE. THE NAM IS MOST ASSERTIVE WITH THE
PROGRESSION OF THE FEATURE. WHICH BY IN LARGE MAY MAKE IT
MOST...BUT PERHAPS NOT ALL THE WAY ACROSS THE CWFA. SURFACE LOW
LOOKS TO REMAIN OVER THE EASTERN HALF OF THE AREA ON MONDAY
KEEPING THINGS QUITE WARM AND DRY. INTO THE EVENING HOURS...A MUCH
MORE PRONOUNCED COLD FRONT MAKES THROUGH WITH THE GFS DEPICTING
POST-FRONTAL PRECIPITATION. HOWEVER...THE MODEL APPEARS TOO MOIST
AND WILL CONTINUE THE FCST THINKING THAT THIS WILL YIELD YET
ANOTHER DRY FRONTAL PASSAGE THOUGH AREAS TO OUR NORTH AND EAST
WILL HAVE A BETTER CHANCE OF STORMS. FCST GUIDANCE HAS TRENDED
LOWER ON TUESDAY/S HIGH AND GIVEN THE EVOLUTION OF THE
SYSTEM...THIS TOO SEEMS REASONABLE AND ADJUST TEMPS COOLER TUE/WED
AS A RESULT. INTO LATE WEEK...MORE EXCITING PROSPECTS FOR
PRECIPITATION ARE LOOKING TO COME TOGETHER AS PERSISTENT SWRLY
FLOW ALOFT ALLOWS INCREASING MOISTURE INTO THE REGION THEN
ASSISTED BY A SLUG OF PACIFIC MOISTURE LATE THURSDAY. WITH PWAT
VALUES INCREASING UP TO WELL OVER AN INCH THIS LOOKS LIKE IT COULD
YIELD THE BEST PROMISE OF MEANINGFUL RAINFALL IN SOME TIME...AND
WE`LL TAKE WHAT WE CAN GET!
FIRE WEATHER...
DAY 1
CRITICAL FIRE WEATHER CONDITIONS WILL DEVELOP WEST OF AN EASTWARD
MIXING DRYLINE THIS AFTERNOON. THE PREVIOUSLY ADVERTISED FIRE
WEATHER WATCH HAS BEEN UPGRADED TO A RED FLAG WARNING ACROSS
WESTERN AND CENTRAL PORTIONS OF THE EXTREME SOUTHERN TEXAS
PANHANDLE...SOUTH PLAINS...AND FAR WESTERN ROLLING PLAINS.
TEMPERATURES WILL CLIMB INTO THE MID 90S TO NEAR 100 DEGREES WITH
MINIMUM RELATIVE HUMIDITIES IN THE SINGLE DIGITS. 20 FOOT WINDS
WILL INCREASE TO 20 MPH OR SLIGHTLY ABOVE THUS WARRANTING THE
UPGRADE TO A WARNING. WILL ISSUE A RANGELAND FIRE DANGER STATEMENT
FOR AREAS JUST EAST OF THOSE IN THE WARNING.
DAY 2-3
CRITICAL FIRE WEATHER CONDITIONS WILL BE POSSIBLE ONCE AGAIN
SUNDAY AFTERNOON OVER MUCH OF THE SAME AREA COVERED BY THE WARNING
THIS MORNING AS DRY CONDITIONS COMBINE WITH BREEZY AFTERNOON
WINDS. TO AVOID PRODUCT CONFUSION...WILL HOLD OFF ON SECOND RED
FLAG PRODUCT FOR SUNDAY AT THIS TIME. WHILE FIRE WEATHER
CONDITIONS MAY EASE ON MONDAY TO SOME EXTENT...ELEVATED TO NEAR
CRITICAL CONDITIONS MAY OCCUR DURING THE AFTERNOON AS WELL.
&&
.PRELIMINARY POINT TEMPS/POPS...
FRIONA 94 56 87 54 83 / 0 0 0 0 0
TULIA 99 57 92 56 88 / 10 0 0 0 0
PLAINVIEW 97 57 94 58 89 / 10 0 0 0 0
LEVELLAND 98 59 94 57 90 / 0 0 0 0 0
LUBBOCK 99 59 96 59 91 / 0 0 0 0 0
DENVER CITY 96 60 92 59 90 / 0 0 0 0 0
BROWNFIELD 99 60 95 60 92 / 0 0 0 0 0
CHILDRESS 101 63 95 62 92 / 20 20 0 0 0
SPUR 103 59 98 64 94 / 10 10 0 0 0
ASPERMONT 102 69 99 65 97 / 20 20 0 0 0
&&
.LUB WATCHES/WARNINGS/ADVISORIES...
RED FLAG WARNING FROM NOON TODAY TO 9 PM CDT THIS EVENING FOR
THE FOLLOWING ZONES: TXZ021>024-027>030-033>036-039>042.
&&
$$
31
362
FXUS64 KLUB 181017
AFDLUB
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LUBBOCK TX
517 AM CDT SAT MAY 18 2013
.SHORT TERM...
TWO BANDS OF VERY LIGHT VIRGA SHOWERS CONTINUE MOVING NORTHEAST
ACROSS THE FAR SOUTHEASTERN TEXAS PANHANDLE AND ROLLING PLAINS THIS
MORNING. THIS IS DUE TO A WEAK UPPER LEVEL DISTURBANCE MOVING
THROUGH ALONG WITH A LOW LEVEL JET INTERACTING WITH THE DRYLINE.
THIS SHOULD WRAP UP BY SUNRISE BEFORE THE MERCURY STARTS TO CLIMB
AGAIN. DEEP MIXING WILL OCCUR AS SKIES CLEAR FROM WEST TO EAST THIS
MORNING AND LEAD TO HIGHS IN THE MID 90S ACROSS THE NORTHWEST TO THE
LOW 100S INTO THE ROLLING PLAINS. CHILDRESS IS FORECAST TO HIT 101
DEGREES TODAY WHICH WOULD BREAK THE PREVIOUS RECORD OF 99 FOR THE
DATE.
AN UPPER TROUGH CURRENTLY ENTERING THE GULF OF CALIFORNIA WILL
CONTINUE TO SLIDE EAST TODAY AND INCREASE FORCING FOR ASCENT
ACROSS THE REGION AS HEIGHTS FALL. THE DRYLINE WILL MIX QUICKLY EAST
AHEAD OF THIS FEATURE...POSSIBLY MIXING EAST OF THE ROLLING PLAINS
THIS AFTERNOON. HOWEVER...A DEEPENING SURFACE LOW ACROSS THE
TEXAS/OKLAHOMA PANHANDLES SHOULD KEEP THE DRYLINE WITHIN REACH SO
THAT IT RETREATS BACK ACROSS THE ROLLING PLAINS AND EXTREME
SOUTHEAST PANHANDLE THIS EVENING.
DEEP LAYER SUPPORT WILL BE MAXIMIZED THIS EVENING AND EARLY TONIGHT
AS THE PREVIOUSLY MENTIONED NEGATIVELY TILTED TROUGH SWINGS INTO
SOUTH CENTRAL NEW MEXICO. AN INTENSIFYING LOW LEVEL JET WILL ALSO
DEVELOP AND USHER IN RICHER MOISTURE AHEAD OF THE
DRYLINE...LENGTHENING HODOGRAPHS AND STRENGTHENING SHEAR PROFILES TO
SUPPORT ORGANIZED UPDRAFTS. EVEN THOUGH COVERAGE MAY BE
LIMITED...BELIEVE WHAT DOES DEVELOP WILL BE STRONG TO
SEVERE...CAPABLE OF PRODUCING LARGE HAIL...GUSTY WINDS TO 60
MPH...AND AN ISOLATED TORNADO. STORM ROOTS WILL BECOME INCREASINGLY
ELEVATED AS SURFACE COOLING COMMENCES POST-SUNSET...LEADING TO MORE
OF A HAIL THREAT AS THE EVENING WEARS ON. CONDITIONS WILL DRY OUT
AFTER MIDNIGHT AS THE TROUGH AND SURFACE LOW PUSH EAST AND PULL
DRIER AIR ACROSS THE AREA.
&&
.LONG TERM...
AN ACTIVE WEATHER PATTERN IN STORE DURING THE NEXT WEEK WHICH SOME
EXCITEMENT INTO NEXT WEEKEND...MORE ON THAT LATER.
UPPER LEVEL LOW WILL BECOME ESTABLISHED FROM THE NEG TILTED TROUGH
ACROSS THE WESTERN USA. THIS LOW WILL UNDERGO MATURATION LATE THIS
WEEKEND INTO EARLY NEXT WEEK ACROSS THE NORTH CENTRAL PLAINS WHILE A
LOBE OF ENERGY ROTATES AROUND THIS PARENT LOW REACHING THE FOUR
CORNERS BY MONDAY AFTERNOON. BY LATE TUESDAY AFTERNOON...
NORTHWESTERLY FLOW RETURNS TO THE AREA AS ANOTHER DEEP LOW COMES
ASHORE THE PACIFIC NORTHWEST COAST. RIDGING WILL BUILD INTO THE
CENTRAL CONUS SERVING TO BLOCK EWRD PROGRESSION OF NORTHWESTERN LOW.
ON SUNDAY MORNING...DRYLINE SHOULD START OFF ACROSS OUR EASTERN
ZONES THUS LEAVING THE AREA HOT AND DRY. IT WOULD APPEAR THAT
ELEVATED TO CRITICAL FIRE WEATHER CONDITIONS WILL OCCUR ONCE AGAIN
ON SUNDAY AFTERNOON AS WIND SPEEDS RAMP UP TO THE 20 TO 25 MPH
RANGE. NWP IS STRONGER WITH THE LATE SUNDAY COLD FRONT THIS
MORNING AND GIVEN THE STRENGTH AND RESULTS OF THIS MORNINGS TROUGH
WHICH GENERATED SOME HIGH BASED SHOWER ACTIVITY...THIS NEW FOUND
STRENGTH APPEARS PLAUSIBLE. THE NAM IS MOST ASSERTIVE WITH THE
PROGRESSION OF THE FEATURE. WHICH BY IN LARGE MAY MAKE IT
MOST...BUT PERHAPS NOT ALL THE WAY ACROSS THE CWFA. SURFACE LOW
LOOKS TO REMAIN OVER THE EASTERN HALF OF THE AREA ON MONDAY
KEEPING THINGS QUITE WARM AND DRY. INTO THE EVENING HOURS...A MUCH
MORE PRONOUNCED COLD FRONT MAKES THROUGH WITH THE GFS DEPICTING
POST-FRONTAL PRECIPITATION. HOWEVER...THE MODEL APPEARS TOO MOIST
AND WILL CONTINUE THE FCST THINKING THAT THIS WILL YIELD YET
ANOTHER DRY FRONTAL PASSAGE THOUGH AREAS TO OUR NORTH AND EAST
WILL HAVE A BETTER CHANCE OF STORMS. FCST GUIDANCE HAS TRENDED
LOWER ON TUESDAY/S HIGH AND GIVEN THE EVOLUTION OF THE
SYSTEM...THIS TOO SEEMS REASONABLE AND ADJUST TEMPS COOLER TUE/WED
AS A RESULT. INTO LATE WEEK...MORE EXCITING PROSPECTS FOR
PRECIPITATION ARE LOOKING TO COME TOGETHER AS PERSISTENT SWRLY
FLOW ALOFT ALLOWS INCREASING MOISTURE INTO THE REGION THEN
ASSISTED BY A SLUG OF PACIFIC MOISTURE LATE THURSDAY. WITH PWAT
VALUES INCREASING UP TO WELL OVER AN INCH THIS LOOKS LIKE IT COULD
YIELD THE BEST PROMISE OF MEANINGFUL RAINFALL IN SOME TIME...AND
WE`LL TAKE WHAT WE CAN GET!
&&
.FIRE WEATHER...
DAY 1
CRITICAL FIRE WEATHER CONDITIONS WILL DEVELOP WEST OF AN EASTWARD
MIXING DRYLINE THIS AFTERNOON. THE PREVIOUSLY ADVERTISED FIRE
WEATHER WATCH HAS BEEN UPGRADED TO A RED FLAG WARNING ACROSS
WESTERN AND CENTRAL PORTIONS OF THE EXTREME SOUTHERN TEXAS
PANHANDLE...SOUTH PLAINS...AND FAR WESTERN ROLLING PLAINS.
TEMPERATURES WILL CLIMB INTO THE MID 90S TO NEAR 100 DEGREES WITH
MINIMUM RELATIVE HUMIDITIES IN THE SINGLE DIGITS. 20 FOOT WINDS
WILL INCREASE TO 20 MPH OR SLIGHTLY ABOVE THUS WARRANTING THE
UPGRADE TO A WARNING. WILL ISSUE A RANGELAND FIRE DANGER STATEMENT
FOR AREAS JUST EAST OF THOSE IN THE WARNING.
DAY 2-3
CRITICAL FIRE WEATHER CONDITIONS WILL BE POSSIBLE ONCE AGAIN
SUNDAY AFTERNOON OVER MUCH OF THE SAME AREA COVERED BY THE WARNING
THIS MORNING AS DRY CONDITIONS COMBINE WITH BREEZY AFTERNOON
WINDS. TO AVOID PRODUCT CONFUSION...WILL HOLD OFF ON SECOND RED
FLAG PRODUCT FOR SUNDAY AT THIS TIME. WHILE FIRE WEATHER
CONDITIONS MAY EASE ON MONDAY TO SOME EXTENT...ELEVATED TO NEAR
CRITICAL CONDITIONS MAY OCCUR DURING THE AFTERNOON AS WELL.
&&
.PRELIMINARY POINT TEMPS/POPS...
FRIONA 94 56 87 54 83 / 0 0 0 0 0
TULIA 99 57 92 56 88 / 10 0 0 0 0
PLAINVIEW 97 57 94 58 89 / 10 0 0 0 0
LEVELLAND 98 59 94 57 90 / 0 0 0 0 0
LUBBOCK 99 59 96 59 91 / 0 0 0 0 0
DENVER CITY 96 60 92 59 90 / 0 0 0 0 0
BROWNFIELD 99 60 95 60 92 / 0 0 0 0 0
CHILDRESS 101 63 95 62 92 / 20 20 0 0 0
SPUR 103 59 98 64 94 / 10 10 0 0 0
ASPERMONT 102 69 99 65 97 / 20 20 0 0 0
&&
.LUB WATCHES/WARNINGS/ADVISORIES...
RED FLAG WARNING FROM NOON TODAY TO 9 PM CDT THIS EVENING FOR
THE FOLLOWING ZONES: TXZ021>024-027>030-033>036-039>042.
&&
$$
31/26
193
FXUS64 KLUB 180459
AFDLUB
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LUBBOCK TX
1159 PM CDT FRI MAY 17 2013
.UPDATE...
QUICK UPDATE TO ADD ISOLATED THUNDERSTORMS OVERNIGHT WITH
DISTURBANCE SLOWLY PASSING OVERHEAD. RMCQUEEN
&&
.AVIATION...
STRONG WINDS WILL CONTINUE TO DEVELOP JUST OFF THE DECK EARLY
SATURDAY MORNING WHICH WILL CREATE BREEZY WINDS AT THE SURFACE AT
KLBB. FOG AND LOW CIG DEVELOPMENT IS ALSO IN DOUBT AT KCDS BUT A
SLIGHT CHANCE AT LIGHT VSBY RESTRICTIONS STILL EXIST. SOUTH TO
SOUTHWEST WINDS WILL INCREASE LATE SATURDAY MORNING IN RESPONSE TO A
DEEPENING SURFACE PRESSURE TROUGH.
&&
.PREV DISCUSSION... /ISSUED 706 PM CDT FRI MAY 17 2013/
AVIATION...
FOG AND LOW CIGS ARE NOT ANTICIPATED TO BE AS EXTENSIVE AS FRIDAY
MORNING WITH A STRONG LOW LEVEL JET FORMING JUST OFF THE SURFACE
THIS EVENING. THIS WILL KEEP WINDS ELEVATED AT KLBB. THE LOW LEVEL
JET MAY ALSO KEEP LOWERED VSBYS AND CIGS FROM AFFECTING THE KCDS
TERMINAL.
PREV DISCUSSION... /ISSUED 328 PM CDT FRI MAY 17 2013/
SHORT TERM...
THE HEAT IS ON...WITH 1930Z TEMPERATURES IN THE MIDDLE AND UPPER 90S
ACROSS THE CAPROCK WITH EVEN A FEW TRIPLE DIGITS NOTED ACROSS THE
SOUTHERN ROLLING PLAINS. SOMEWHAT COOLER AIR WAS IN PLACE ACROSS THE
FAR NORTHEAST ZONES WHERE BACKED FLOW...IMPROVED MOISTURE AND THE
LATE CLEARING OF THE STRATUS HAVE KEPT TEMPERATURES IN THE 80S TO
THIS POINT. AS OF THIS WRITING...RADAR WAS SHOWING THE DRYLINE
NEARLY STATIONARY AND POSITIONED FROM NEAR WAYSIDE TO MCADOO TO
DICKENS...THEN BENDING MORE EASTWARD. UP TO THIS POINT ONLY A VERY
LIMITED CUMULUS FIELD WAS SEEN LOCALLY ALONG THE DRYLINE /IN FLOYD
COUNTY/...WITH MORE ROBUST DEVELOPMENT NOTED ALONG THE DRYLINE NEAR
KBKD THEN SOUTH-SOUTHWESTWARD TO NEAR KBBD. LATEST HIGH-RESOLUTION
GUIDANCE CONTINUES TO FAVOR THE LATTER AREA FOR ROBUST SCATTERED
CONVECTION LATE THIS AFTERNOON...WHILE CAP WILL LIKELY HOLD FIRM
LOCALLY. OBVIOUSLY...IF DEEP MOIST CONVECTION CAN GET GOING
HERE...STRONG INSTABILITY AND MODEST 0-6 KM SHEAR WOULD SUPPORT A
SEVERE THREAT...THOUGH PROSPECTS FOR CI ARE HIGHLY CONDITIONAL.
THE DRYLINE WILL RETREAT WESTWARD TONIGHT BUT WILL ALSO INTERACT
WITH A STRENGTHENING SOUTHERLY LLJ DEVELOPING IN ADVANCE OF AN
APPROACHING WESTERN TROUGH. THIS WILL TEND TO LIMIT THE BEST
MOISTURE FLUX TO THE FAR NORTHEASTERN ZONES WHERE ANOTHER SHORTER
BOUT OF LOW CLOUDS AND FOG WILL BE POSSIBLE EARLY SATURDAY. IN
ADDITION...AN UPPER DISTURBANCE WILL LIFT FROM FAR NORTHERN MEXICO
AND ACROSS THE CAPROCK LATE TONIGHT. SEVERAL NWP MODELS DO INDICATE
LIGHT QPF ACROSS THE WESTERN ZONES LATE TONIGHT AS LIFT WITH THIS
WAVE MOVES ACROSS. HOWEVER...IT WILL BE QUITE DRY IN THE DEEP
SUB-CLOUD LAYER SO CHANCES FOR MEASURABLE PRECIPITATION FROM ANY
ELEVATED SHOWERS WILL BE TOUGH TO COME BY.
THE WESTERN TROUGH WILL DRAW CLOSER ON SATURDAY RESULTING IN HEIGHT
AND PRESSURE FALLS AND A TIGHTENING SFC PRESSURE GRADIENT. THIS WILL
MEAN INCREASINGLY BREEZY CONDITIONS...WITH THE DRYLINE PROGGED TO
SHARPEN SOMEWHERE IN THE ROLLING PLAINS BY MID TO LATE AFTERNOON. IT
APPEARS THE LARGE SCALE SUPPORT MAY BE A BIT DELAYED...AND
RELATIVELY WARM TEMPERATURES ALOFT WILL TEND TO LIMIT CONVECTIVE
CHANCES...BUT ENOUGH FORCING ALONG THE DRYLINE WILL BE PRESENT TO
PROVIDE AT LEAST A SLIGHT CHANCE OF STORMS BY LATE IN THE AFTERNOON.
MODEST INSTABILITY AND SHEAR COULD SUPPORT ISOLATED STRONG/SEVERE
HIGH-BASED CONVECTION. WEST OF THE DRYLINE...GUSTY SOUTHWESTERLY
WINDS WILL CREATE ELEVATED TO CRITICAL FIRE WEATHER CONDITIONS.
LOWS TONIGHT WILL BE MILD...ESPECIALLY ACROSS THE EASTERN HALF OF
THE FA WHERE BETTER MOISTURE LEVELS WILL RESIDE WITH BREEZY LATE
NIGHT WINDS. ACROSS THE NORTHWEST ZONES...LIGHTER WINDS AND LESS
MOISTURE SHOULD ALLOW TEMPERATURES TO DROP NICELY INTO THE UPPER 50S
AND LOWER 60S...WHILE LOWS OUT EAST WILL BE IN THE UPPER 60S AND
LOWER 70S. HIGHS SATURDAY WILL AGAIN BE TOASTY...RANGING FROM THE
MIDDLE 90S ACROSS THE SOUTHWEST PANHANDLE TO AROUND OR JUST ABOVE
100 DEGREES OFF THE CAPROCK.
LONG TERM...
EARLY TO MIDWEEK UPPER PATTERN TO SEE A TROUGH OVER THE NRN AND
CNTL PLAINS MOVE SLOWLY EWD TO THE MS VALLEY WITH FLAT TO WEAKLY
CYCLONIC FLOW OVER THE SRN HIGH PLAINS. UNFORTUNATELY THAT PATTERN
THIS TIME OF YEAR SHOULD SHIFT THE DRYLINE TO THE EAST OF THE FCST
AREA SUNDAY AND MONDAY WITH POTENTIAL FOR A WEAK FRONTAL BOUNDARY
TO MOVE INTO THE AREA SUNDAY NIGHT BEFORE RETREATING MONDAY.
STRONGER FRONTAL PASSAGE WILL COME TUESDAY AS THE LAST BIT OF
ENERGY ASSOCIATED WITH AFOREMENTIONED TROUGH SHIFTS EWD WITH THE
MAIN TROUGH. AFTER VERY WARM TEMPERATURES SUNDAY AND MONDAY THE
FRONT WILL BRING SOME RELIEF WITH TEMPERATURES BRIEFLY NEAR NORMAL
VALUES.
THE LATTER HALF OF THE WEEK WILL SEE AN AMPLIFICATION OF THE UPPER
PATTERN WITH A RIDGE BUILDING OVER THE PLAINS AND A LONG WAVE
TROUGH DEVELOPING ALONG THE WEST COAST. THIS LATTER FEATURE
APPEARS TO BE FURTHER TO THE WEST WITH EACH MODEL RUN...SO IN THE
END THE UPPER RIDGE MAY WIN OUT FOR THURSDAY AND FRIDAY.
HOWEVER...STILL SOME PRECIP SIGNAL SHOWING IN THE 12Z RUNS WITH
POTENTIAL FOR THE FCST AREA TO BE JUST ON THE CYCLONIC SIDE OF THE
UPPER RIDGE. FURTHERMORE THE NEAR-MERIDIONAL NATURE OF THE UPPER
TROUGH WOULD SUPPORT DRAWING LOW LEVEL MOISTURE FARTHER WWD AND
POTENTIAL FOR THE DRYLINE TO STAY FARTHER WEST EACH DAY...POSSIBLY
AS FAR BACK AS THE NM STATE LINE. AS A RESULT...ALTHOUGH STILL
RATHER UNCERTAIN REGARDING PRECIP POTENTIAL AS A WHOLE PATTERN
SUGGESTS BRINGING SLIGHT CHANCE MENTION FOR BOTH THURSDAY AND
FRIDAY BACK TO THE WEST.
FIRE WEATHER...
WEST OF THE DRYLINE...GUSTY SOUTHWESTERLY WINDS WILL CREATE ELEVATED
TO CRITICAL FIRE WEATHER CONDITIONS SATURDAY AFTERNOON AND EARLY
EVENING. TEMPERATURES WILL CLIMB WELL INTO THE 90S PUSHING RH VALUES
DOWN TOWARD 5 PERCENT. ONLY QUESTION MARK WILL BE THE WINDS WHICH
WILL LIKELY RESIDE AROUND THE LOW END OF RED FLAG CRITERIA.
THUS...WILL MAINTAIN THE FIRE WEATHER WATCH IN PLACE FOR TOMORROW
AFTN/EVNG AND LET THE OVERNIGHT SHIFT MAKE A FINAL CALL ON WHETHER TO
UPGRADE TO A RED FLAG WARNING OR A FIRE DANGER STATEMENT.
&&
.PRELIMINARY POINT TEMPS/POPS...
FRIONA 58 93 55 89 53 / 20 0 0 0 0
TULIA 61 95 56 91 52 / 20 10 0 0 0
PLAINVIEW 61 96 56 93 53 / 20 10 0 0 0
LEVELLAND 62 97 58 93 56 / 20 0 0 0 0
LUBBOCK 65 98 58 95 57 / 20 10 0 0 0
DENVER CITY 62 95 59 93 58 / 20 0 0 0 0
BROWNFIELD 62 98 59 95 59 / 20 0 0 0 0
CHILDRESS 68 100 61 98 61 / 10 20 10 0 10
SPUR 66 102 58 99 61 / 10 10 10 0 0
ASPERMONT 72 101 69 101 64 / 10 20 20 0 0
&&
.LUB WATCHES/WARNINGS/ADVISORIES...
FIRE WEATHER WATCH FROM SATURDAY AFTERNOON THROUGH SATURDAY
EVENING FOR THE FOLLOWING ZONES:
TXZ021>024-027>030-033>036-039>042.
&&
$$
05/99
057
FXUS64 KLUB 180006
AFDLUB
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LUBBOCK TX
706 PM CDT FRI MAY 17 2013
.AVIATION...
FOG AND LOW CIGS ARE NOT ANTICIPATED TO BE AS EXTENSIVE AS FRIDAY
MORNING WITH A STRONG LOW LEVEL JET FORMING JUST OFF THE SURFACE
THIS EVENING. THIS WILL KEEP WINDS ELEVATED AT KLBB. THE LOW LEVEL
JET MAY ALSO KEEP LOWERED VISBYS AND CIGS FROM AFFECTING THE KCDS
TERMINAL.
&&
.PREV DISCUSSION... /ISSUED 328 PM CDT FRI MAY 17 2013/
SHORT TERM...
THE HEAT IS ON...WITH 1930Z TEMPERATURES IN THE MIDDLE AND UPPER 90S
ACROSS THE CAPROCK WITH EVEN A FEW TRIPLE DIGITS NOTED ACROSS THE
SOUTHERN ROLLING PLAINS. SOMEWHAT COOLER AIR WAS IN PLACE ACROSS THE
FAR NORTHEAST ZONES WHERE BACKED FLOW...IMPROVED MOISTURE AND THE
LATE CLEARING OF THE STRATUS HAVE KEPT TEMPERATURES IN THE 80S TO
THIS POINT. AS OF THIS WRITING...RADAR WAS SHOWING THE DRYLINE
NEARLY STATIONARY AND POSITIONED FROM NEAR WAYSIDE TO MCADOO TO
DICKENS...THEN BENDING MORE EASTWARD. UP TO THIS POINT ONLY A VERY
LIMITED CUMULUS FIELD WAS SEEN LOCALLY ALONG THE DRYLINE /IN FLOYD
COUNTY/...WITH MORE ROBUST DEVELOPMENT NOTED ALONG THE DRYLINE NEAR
KBKD THEN SOUTH-SOUTHWESTWARD TO NEAR KBBD. LATEST HIGH-RESOLUTION
GUIDANCE CONTINUES TO FAVOR THE LATTER AREA FOR ROBUST SCATTERED
CONVECTION LATE THIS AFTERNOON...WHILE CAP WILL LIKELY HOLD FIRM
LOCALLY. OBVIOUSLY...IF DEEP MOIST CONVECTION CAN GET GOING
HERE...STRONG INSTABILITY AND MODEST 0-6 KM SHEAR WOULD SUPPORT A
SEVERE THREAT...THOUGH PROSPECTS FOR CI ARE HIGHLY CONDITIONAL.
THE DRYLINE WILL RETREAT WESTWARD TONIGHT BUT WILL ALSO INTERACT
WITH A STRENGTHENING SOUTHERLY LLJ DEVELOPING IN ADVANCE OF AN
APPROACHING WESTERN TROUGH. THIS WILL TEND TO LIMIT THE BEST
MOISTURE FLUX TO THE FAR NORTHEASTERN ZONES WHERE ANOTHER SHORTER
BOUT OF LOW CLOUDS AND FOG WILL BE POSSIBLE EARLY SATURDAY. IN
ADDITION...AN UPPER DISTURBANCE WILL LIFT FROM FAR NORTHERN MEXICO
AND ACROSS THE CAPROCK LATE TONIGHT. SEVERAL NWP MODELS DO INDICATE
LIGHT QPF ACROSS THE WESTERN ZONES LATE TONIGHT AS LIFT WITH THIS
WAVE MOVES ACROSS. HOWEVER...IT WILL BE QUITE DRY IN THE DEEP
SUB-CLOUD LAYER SO CHANCES FOR MEASURABLE PRECIPITATION FROM ANY
ELEVATED SHOWERS WILL BE TOUGH TO COME BY.
THE WESTERN TROUGH WILL DRAW CLOSER ON SATURDAY RESULTING IN HEIGHT
AND PRESSURE FALLS AND A TIGHTENING SFC PRESSURE GRADIENT. THIS WILL
MEAN INCREASINGLY BREEZY CONDITIONS...WITH THE DRYLINE PROGGED TO
SHARPEN SOMEWHERE IN THE ROLLING PLAINS BY MID TO LATE AFTERNOON. IT
APPEARS THE LARGE SCALE SUPPORT MAY BE A BIT DELAYED...AND
RELATIVELY WARM TEMPERATURES ALOFT WILL TEND TO LIMIT CONVECTIVE
CHANCES...BUT ENOUGH FORCING ALONG THE DRYLINE WILL BE PRESENT TO
PROVIDE AT LEAST A SLIGHT CHANCE OF STORMS BY LATE IN THE AFTERNOON.
MODEST INSTABILITY AND SHEAR COULD SUPPORT ISOLATED STRONG/SEVERE
HIGH-BASED CONVECTION. WEST OF THE DRYLINE...GUSTY SOUTHWESTERLY
WINDS WILL CREATE ELEVATED TO CRITICAL FIRE WEATHER CONDITIONS.
LOWS TONIGHT WILL BE MILD...ESPECIALLY ACROSS THE EASTERN HALF OF
THE FA WHERE BETTER MOISTURE LEVELS WILL RESIDE WITH BREEZY LATE
NIGHT WINDS. ACROSS THE NORTHWEST ZONES...LIGHTER WINDS AND LESS
MOISTURE SHOULD ALLOW TEMPERATURES TO DROP NICELY INTO THE UPPER 50S
AND LOWER 60S...WHILE LOWS OUT EAST WILL BE IN THE UPPER 60S AND
LOWER 70S. HIGHS SATURDAY WILL AGAIN BE TOASTY...RANGING FROM THE
MIDDLE 90S ACROSS THE SOUTHWEST PANHANDLE TO AROUND OR JUST ABOVE
100 DEGREES OFF THE CAPROCK.
LONG TERM...
EARLY TO MIDWEEK UPPER PATTERN TO SEE A TROUGH OVER THE NRN AND
CNTL PLAINS MOVE SLOWLY EWD TO THE MS VALLEY WITH FLAT TO WEAKLY
CYCLONIC FLOW OVER THE SRN HIGH PLAINS. UNFORTUNATELY THAT PATTERN
THIS TIME OF YEAR SHOULD SHIFT THE DRYLINE TO THE EAST OF THE FCST
AREA SUNDAY AND MONDAY WITH POTENTIAL FOR A WEAK FRONTAL BOUNDARY
TO MOVE INTO THE AREA SUNDAY NIGHT BEFORE RETREATING MONDAY.
STRONGER FRONTAL PASSAGE WILL COME TUESDAY AS THE LAST BIT OF
ENERGY ASSOCIATED WITH AFOREMENTIONED TROUGH SHIFTS EWD WITH THE
MAIN TROUGH. AFTER VERY WARM TEMPERATURES SUNDAY AND MONDAY THE
FRONT WILL BRING SOME RELIEF WITH TEMPERATURES BRIEFLY NEAR NORMAL
VALUES.
THE LATTER HALF OF THE WEEK WILL SEE AN AMPLIFICATION OF THE UPPER
PATTERN WITH A RIDGE BUILDING OVER THE PLAINS AND A LONG WAVE
TROUGH DEVELOPING ALONG THE WEST COAST. THIS LATTER FEATURE
APPEARS TO BE FURTHER TO THE WEST WITH EACH MODEL RUN...SO IN THE
END THE UPPER RIDGE MAY WIN OUT FOR THURSDAY AND FRIDAY.
HOWEVER...STILL SOME PRECIP SIGNAL SHOWING IN THE 12Z RUNS WITH
POTENTIAL FOR THE FCST AREA TO BE JUST ON THE CYCLONIC SIDE OF THE
UPPER RIDGE. FURTHERMORE THE NEAR-MERIDIONAL NATURE OF THE UPPER
TROUGH WOULD SUPPORT DRAWING LOW LEVEL MOISTURE FARTHER WWD AND
POTENTIAL FOR THE DRYLINE TO STAY FARTHER WEST EACH DAY...POSSIBLY
AS FAR BACK AS THE NM STATE LINE. AS A RESULT...ALTHOUGH STILL
RATHER UNCERTAIN REGARDING PRECIP POTENTIAL AS A WHOLE PATTERN
SUGGESTS BRINGING SLIGHT CHANCE MENTION FOR BOTH THURSDAY AND
FRIDAY BACK TO THE WEST.
FIRE WEATHER...
WEST OF THE DRYLINE...GUSTY SOUTHWESTERLY WINDS WILL CREATE ELEVATED
TO CRITICAL FIRE WEATHER CONDITIONS SATURDAY AFTERNOON AND EARLY
EVENING. TEMPERATURES WILL CLIMB WELL INTO THE 90S PUSHING RH VALUES
DOWN TOWARD 5 PERCENT. ONLY QUESTION MARK WILL BE THE WINDS WHICH
WILL LIKELY RESIDE AROUND THE LOW END OF RED FLAG CRITERIA.
THUS...WILL MAINTAIN THE FIRE WEATHER WATCH IN PLACE FOR TOMORROW
AFTN/EVNG AND LET THE OVERNIGHT SHIFT MAKE A FINAL CALL ON WHETHER TO
UPGRADE TO A RED FLAG WARNING OR A FIRE DANGER STATEMENT.
&&
.PRELIMINARY POINT TEMPS/POPS...
FRIONA 58 93 55 89 53 / 10 0 0 0 0
TULIA 61 95 56 91 52 / 10 10 0 0 0
PLAINVIEW 61 96 56 93 53 / 10 10 0 0 0
LEVELLAND 62 97 58 93 56 / 10 0 0 0 0
LUBBOCK 65 98 58 95 57 / 10 10 0 0 0
DENVER CITY 62 95 59 93 58 / 10 0 0 0 0
BROWNFIELD 62 98 59 95 59 / 10 0 0 0 0
CHILDRESS 68 100 61 98 61 / 10 20 10 0 10
SPUR 66 102 58 99 61 / 10 10 10 0 0
ASPERMONT 72 101 69 101 64 / 10 20 20 0 0
&&
.LUB WATCHES/WARNINGS/ADVISORIES...
FIRE WEATHER WATCH FROM SATURDAY AFTERNOON THROUGH SATURDAY
EVENING FOR THE FOLLOWING ZONES:
TXZ021>024-027>030-033>036-039>042.
&&
$$
01
360
FXUS64 KLUB 172028
AFDLUB
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LUBBOCK TX
328 PM CDT FRI MAY 17 2013
.SHORT TERM...
THE HEAT IS ON...WITH 1930Z TEMPERATURES IN THE MIDDLE AND UPPER 90S
ACROSS THE CAPROCK WITH EVEN A FEW TRIPLE DIGITS NOTED ACROSS THE
SOUTHERN ROLLING PLAINS. SOMEWHAT COOLER AIR WAS IN PLACE ACROSS THE
FAR NORTHEAST ZONES WHERE BACKED FLOW...IMPROVED MOISTURE AND THE
LATE CLEARING OF THE STRATUS HAVE KEPT TEMPERATURES IN THE 80S TO
THIS POINT. AS OF THIS WRITING...RADAR WAS SHOWING THE DRYLINE
NEARLY STATIONARY AND POSITIONED FROM NEAR WAYSIDE TO MCADOO TO
DICKENS...THEN BENDING MORE EASTWARD. UP TO THIS POINT ONLY A VERY
LIMITED CUMULUS FIELD WAS SEEN LOCALLY ALONG THE DRYLINE /IN FLOYD
COUNTY/...WITH MORE ROBUST DEVELOPMENT NOTED ALONG THE DRYLINE NEAR
KBKD THEN SOUTH-SOUTHWESTWARD TO NEAR KBBD. LATEST HIGH-RESOLUTION
GUIDANCE CONTINUES TO FAVOR THE LATTER AREA FOR ROBUST SCATTERED
CONVECTION LATE THIS AFTERNOON...WHILE CAP WILL LIKELY HOLD FIRM
LOCALLY. OBVIOUSLY...IF DEEP MOIST CONVECTION CAN GET GOING
HERE...STRONG INSTABILITY AND MODEST 0-6 KM SHEAR WOULD SUPPORT A
SEVERE THREAT...THOUGH PROSPECTS FOR CI ARE HIGHLY CONDITIONAL.
THE DRYLINE WILL RETREAT WESTWARD TONIGHT BUT WILL ALSO INTERACT
WITH A STRENGTHENING SOUTHERLY LLJ DEVELOPING IN ADVANCE OF AN
APPROACHING WESTERN TROUGH. THIS WILL TEND TO LIMIT THE BEST
MOISTURE FLUX TO THE FAR NORTHEASTERN ZONES WHERE ANOTHER SHORTER
BOUT OF LOW CLOUDS AND FOG WILL BE POSSIBLE EARLY SATURDAY. IN
ADDITION...AN UPPER DISTURBANCE WILL LIFT FROM FAR NORTHERN MEXICO
AND ACROSS THE CAPROCK LATE TONIGHT. SEVERAL NWP MODELS DO INDICATE
LIGHT QPF ACROSS THE WESTERN ZONES LATE TONIGHT AS LIFT WITH THIS
WAVE MOVES ACROSS. HOWEVER...IT WILL BE QUITE DRY IN THE DEEP
SUB-CLOUD LAYER SO CHANCES FOR MEASURABLE PRECIPITATION FROM ANY
ELEVATED SHOWERS WILL BE TOUGH TO COME BY.
THE WESTERN TROUGH WILL DRAW CLOSER ON SATURDAY RESULTING IN HEIGHT
AND PRESSURE FALLS AND A TIGHTENING SFC PRESSURE GRADIENT. THIS WILL
MEAN INCREASINGLY BREEZY CONDITIONS...WITH THE DRYLINE PROGGED TO
SHARPEN SOMEWHERE IN THE ROLLING PLAINS BY MID TO LATE AFTERNOON. IT
APPEARS THE LARGE SCALE SUPPORT MAY BE A BIT DELAYED...AND
RELATIVELY WARM TEMPERATURES ALOFT WILL TEND TO LIMIT CONVECTIVE
CHANCES...BUT ENOUGH FORCING ALONG THE DRYLINE WILL BE PRESENT TO
PROVIDE AT LEAST A SLIGHT CHANCE OF STORMS BY LATE IN THE AFTERNOON.
MODEST INSTABILITY AND SHEAR COULD SUPPORT ISOLATED STRONG/SEVERE
HIGH-BASED CONVECTION. WEST OF THE DRYLINE...GUSTY SOUTHWESTERLY
WINDS WILL CREATE ELEVATED TO CRITICAL FIRE WEATHER CONDITIONS.
LOWS TONIGHT WILL BE MILD...ESPECIALLY ACROSS THE EASTERN HALF OF
THE FA WHERE BETTER MOISTURE LEVELS WILL RESIDE WITH BREEZY LATE
NIGHT WINDS. ACROSS THE NORTHWEST ZONES...LIGHTER WINDS AND LESS
MOISTURE SHOULD ALLOW TEMPERATURES TO DROP NICELY INTO THE UPPER 50S
AND LOWER 60S...WHILE LOWS OUT EAST WILL BE IN THE UPPER 60S AND
LOWER 70S. HIGHS SATURDAY WILL AGAIN BE TOASTY...RANGING FROM THE
MIDDLE 90S ACROSS THE SOUTHWEST PANHANDLE TO AROUND OR JUST ABOVE
100 DEGREES OFF THE CAPROCK.
&&
.LONG TERM...
EARLY TO MIDWEEK UPPER PATTERN TO SEE A TROUGH OVER THE NRN AND
CNTL PLAINS MOVE SLOWLY EWD TO THE MS VALLEY WITH FLAT TO WEAKLY
CYCLONIC FLOW OVER THE SRN HIGH PLAINS. UNFORTUNATELY THAT PATTERN
THIS TIME OF YEAR SHOULD SHIFT THE DRYLINE TO THE EAST OF THE FCST
AREA SUNDAY AND MONDAY WITH POTENTIAL FOR A WEAK FRONTAL BOUNDARY
TO MOVE INTO THE AREA SUNDAY NIGHT BEFORE RETREATING MONDAY.
STRONGER FRONTAL PASSAGE WILL COME TUESDAY AS THE LAST BIT OF
ENERGY ASSOCIATED WITH AFOREMENTIONED TROUGH SHIFTS EWD WITH THE
MAIN TROUGH. AFTER VERY WARM TEMPERATURES SUNDAY AND MONDAY THE
FRONT WILL BRING SOME RELIEF WITH TEMPERATURES BRIEFLY NEAR NORMAL
VALUES.
THE LATTER HALF OF THE WEEK WILL SEE AN AMPLIFICATION OF THE UPPER
PATTERN WITH A RIDGE BUILDING OVER THE PLAINS AND A LONG WAVE
TROUGH DEVELOPING ALONG THE WEST COAST. THIS LATTER FEATURE
APPEARS TO BE FURTHER TO THE WEST WITH EACH MODEL RUN...SO IN THE
END THE UPPER RIDGE MAY WIN OUT FOR THURSDAY AND FRIDAY.
HOWEVER...STILL SOME PRECIP SIGNAL SHOWING IN THE 12Z RUNS WITH
POTENTIAL FOR THE FCST AREA TO BE JUST ON THE CYCLONIC SIDE OF THE
UPPER RIDGE. FURTHERMORE THE NEAR-MERIDIONAL NATURE OF THE UPPER
TROUGH WOULD SUPPORT DRAWING LOW LEVEL MOISTURE FARTHER WWD AND
POTENTIAL FOR THE DRYLINE TO STAY FARTHER WEST EACH DAY...POSSIBLY
AS FAR BACK AS THE NM STATE LINE. AS A RESULT...ALTHOUGH STILL
RATHER UNCERTAIN REGARDING PRECIP POTENTIAL AS A WHOLE PATTERN
SUGGESTS BRINGING SLIGHT CHANCE MENTION FOR BOTH THURSDAY AND
FRIDAY BACK TO THE WEST.
&&
.FIRE WEATHER...
WEST OF THE DRYLINE...GUSTY SOUTHWESTERLY WINDS WILL CREATE ELEVATED
TO CRITICAL FIRE WEATHER CONDITIONS SATURDAY AFTERNOON AND EARLY
EVENING. TEMPERATURES WILL CLIMB WELL INTO THE 90S PUSHING RH VALUES
DOWN TOWARD 5 PERCENT. ONLY QUESTION MARK WILL BE THE WINDS WHICH
WILL LIKELY RESIDE AROUND THE LOW END OF RED FLAG CRITERIA.
THUS...WILL MAINTAIN THE FIRE WEATHER WATCH IN PLACE FOR TOMORROW
AFTN/EVNG AND LET THE OVERNIGHT SHIFT MAKE A FINAL CALL ON WHETHER TO
UPGRADE TO A RED FLAG WARNING OR A FIRE DANGER STATEMENT.
&&
.PRELIMINARY POINT TEMPS/POPS...
FRIONA 58 93 55 89 53 / 10 0 0 0 0
TULIA 61 95 56 91 52 / 10 10 0 0 0
PLAINVIEW 61 96 56 93 53 / 10 10 0 0 0
LEVELLAND 62 97 58 93 56 / 10 0 0 0 0
LUBBOCK 65 98 58 95 57 / 10 10 0 0 0
DENVER CITY 62 95 59 93 58 / 10 0 0 0 0
BROWNFIELD 62 98 59 95 59 / 10 0 0 0 0
CHILDRESS 68 100 61 98 61 / 10 20 10 0 10
SPUR 66 102 58 99 61 / 10 10 10 0 0
ASPERMONT 72 101 69 101 64 / 10 20 20 0 0
&&
.LUB WATCHES/WARNINGS/ADVISORIES...
FIRE WEATHER WATCH FROM SATURDAY AFTERNOON THROUGH SATURDAY
EVENING FOR THE FOLLOWING ZONES:
TXZ021>024-027>030-033>036-039>042.
&&
$$
23/07
678
FXUS64 KLUB 171749
AFDLUB
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LUBBOCK TX
1249 PM CDT FRI MAY 17 2013
.AVIATION...
MORNING BOUT OF STRATUS AND FOG CONTINUES TO CLEAR AND WILL EXIT
KCDS IN THE NEXT HOUR OR SO. BEYOND THAT...VFR CONDITIONS WILL
PREVAIL THROUGH THE REMAINDER OF THE AFTERNOON AND EVENING. A
DRYLINE WILL BE POSITIONED BETWEEN KLBB AND KCDS BY LATE THIS
AFTERNOON AND THERE IS A VERY REMOTE CHANCE IT COULD SPARK A
STORM...BUT PROSPECTS OF THIS ARE WAY TOO LOW TO INCLUDE IN THE
KCDS TAF. LOW-LEVEL MOISTURE WILL SURGE BACK WESTWARD
TONIGHT...BUT A SOUTHERLY LLJ WILL DEVELOP AND TEND TO HOLD THE
BETTER MOISTURE AND BEST PROSPECTS FOR LOW CLOUDS AND FOG
NORTHWARD. THAT SAID...KCDS COULD SEE A PERIOD OF SUB-VFR
CONDITIONS...PERHAPS EVEN LIFR IF THE MOISTURE SURGE IS BETTER
THAN CURRENTLY ANTICIPATED. IN ADDITION...A PERIOD OF BREEZY
SOUTHERLY WINDS WILL BE POSSIBLE AT KLBB LATE TONIGHT UNDERNEATH
THE STRENGTHENING LLJ. BREEZY CONDITIONS AND VFR CONDITIONS WILL
THEN VISIT BOTH TERMINALS ON SATURDAY.
&&
.PREV DISCUSSION... /ISSUED 1211 PM CDT FRI MAY 17 2013/
UPDATE...
THE FOG HAS LIFTED AND LOW CLOUDS CLEARED OUT OF ALL BUT THE FAR
NORTHEASTERN ZONES...WHICH WILL SEE THE SUN VERY SOON. HAVE UPDATED
THE PRODUCTS TO REFLECT THIS. OTHERWISE...THE ONGOING FORECAST
REMAINS ON TRACK. THE MAIN FOCUS FOR THIS AFTERNOON WILL BE ON THE
HEAT...WITH MANY SPOTS NEAR OR ABOVE THE TRIPLE DIGIT MARK. THE
EXCEPTION WILL LIKELY BE ACROSS THE NORTHEAST ZONES WHERE MOIST
EASTERLY FLOW WILL PERSIST THROUGH THE DAY AND HELP KEEP HIGHS
DOWN IN THE 90S. OF NOTE...THE RECORD HIGH AT LUBBOCK IS 101
DEGREES /SET IN 1996/...SO IT WILL BE A CLOSE CALL WHETHER THIS
CAN BE TOUCHED OR ECLIPSED. AS REFLECTED IN THE BROAD FOG/STRATUS
DECK THIS MORNING...THE LOW-LEVEL MOISTURE MADE A STRONG PUSH WELL
UP ONTO THE CAPROCK THIS MORNING. HOWEVER...THE MOISTURE WAS
ALREADY MIXING OUT AND EXPECT THE EFFECTIVE DRYLINE TO STRETCH
ROUGHLY FROM A TULIA TO GUTHRIE LINE BY LATE THIS AFTERNOON. EYES
WILL BE ON THIS BOUNDARY FOR POSSIBLE ISOLATED MOIST CONVECTION
LATE THIS AFTERNOON OR EARLY THIS EVENING...BUT INDICATIONS ARE
THAT WARMING TEMPERATURES ALOFT AND MINIMAL LARGE SCALE SUPPORT
WILL KEEP THE INSTABILITY CAPPED LOCALLY. THE EXCEPTION TO THIS
MAY BE TO OUR EAST INTO THE BIG COUNTRY WHERE ISOLATED STORMS MAY
BRIEFLY FORM WHERE LOW-LEVEL CONVERGENCE AND INTENSE HEATING ARE
MAXIMIZED. THAT SAID...IF A STORM CAN FORM ALONG THE DRYLINE
LOCALLY...THERE WILL BE STRONG INSTABILITY TO WORK WITH AND MODEST
SHEAR...SO IT WOULD QUICKLY INTENSIFY. THUS...WE WILL CONTINUE TO
MONITOR THUNDER CHANCES THROUGH THE AFTERNOON...THOUGH POPS AT OR
BELOW 10 PERCENT APPEAR WARRANTED ATTM.
PREV DISCUSSION... /ISSUED 853 AM CDT FRI MAY 17 2013/
UPDATE...
FOG AND LOW STRATUS FRONT HAS MOVED SOUTHWESTWARD TO A HART TO
LUBBOCK TO POST TO ASPERMONT LINE. THIS IS SLIGHTLY FURTHER SOUTH
AND WEST THAN EARLIER ANTICIPATED AND HAVE UPDATED THE GRIDS TO
REFLECT THIS. FOG HAS BEEN LOCALLY DENSE AT TIMES...WITH THE LUBBOCK
AIRPORT DROPPING AS LOW AS 1/8 MILE RECENTLY...THOUGH WE DO EXPECT
THE VISIBILITIES TO RAPIDLY IMPROVE OVER THE NEXT HOUR OR TWO.
HENCE...HAVE CHOSEN TO HANDLE THE PATCHY DENSE FOG WITH SHORT TERM
FORECASTS. REMAINDER OF THE FORECAST REMAINS UNCHANGED ATTM.
UPDATED PRODUCTS HAVE BEEN SENT.
PREV DISCUSSION... /ISSUED 358 AM CDT FRI MAY 17 2013/
SHORT TERM...
CONCERNS THIS MORNING FOCUS AROUND FOG AND STRATUS PUSHING WESTWARD
ACROSS THE AREA. CHILDRESS CURRENTLY SOCKED IN WITH VISIBILITIES
AROUND 1 MILE. WILL CONTINUE TO SEE VISIBILITIES DROP ACROSS CENTRAL
TO EASTERN PORTIONS OF THE EXTREME SOUTHERN PANHANDLE...NORTHERN TO
CENTRAL ROLLING PLAINS...AND ADJACENT SECTIONS OF THE SOUTH PLAINS
THIS MORNING AS WINDS REMAIN BACKED AHEAD OF A SURFACE TROUGH AND IN
WAKE OF A RETREATING DRYLINE.
MIXING WILL COMMENCE AFTER SUNRISE THIS MORNING AND MIX OUT LOW
LEVEL MOISTURE. THE EXTREME SOUTHEAST PANHANDLE AND SURROUNDING
AREAS WILL NOT MIX OUT AS QUICKLY WITH LOW LEVEL WINDS MAINTAINING
AN UPSLOPE COMPONENT OUT OF THE EAST AHEAD OF THE AFOREMENTIONED
SURFACE TROUGH...THUS KEEPING FOG AND STRATUS ACROSS THE AREA
THROUGHOUT MUCH OF THE MORNING. THIS WILL PUT A DAMPER ON
TEMPERATURES ACROSS NORTHEAST ZONES WHEN COMPARED TO LOCATIONS TO
THE SOUTH AND WEST. THE HOTTEST DAY OF 2013 THUS FAR WILL SEE AREAS
IN CLOSE PROXIMITY TO THE EXTREME SOUTHEAST PANHANDLE HOLD IN THE
LOW TO MID 90S WHILE EVERYWHERE ELSE SOARS INTO THE UPPER 90S TO LOW
100S UNDERNEATH H85 TEMPERATURES OF 30-31C.
KEPT THE FORECAST DRY TODAY AND TONIGHT AS HEIGHTS BUILD ALOFT...H70
TEMPERATURES WARM TO AROUND 13-14C DECREASING INSTABILITY...AND
MOISTURE REMAINS ANEMIC. DRYLINE SHOULD BE POSITIONED NEAR THE EDGE
OF THE CAPROCK BY MID TO LATE AFTERNOON...BUT CAPPING WILL BE TOO
STOUT TO PROMOTE CONVECTION DUE TO A STRENGTHENING ELEVATED MIXED LAYER
OWING TO WARM AIR ADVECTION.
WILL LIKELY SEE PATCHY FOG AFTER MIDNIGHT TONIGHT ACROSS NORTHEAST
ZONES BEHIND THE RETREATING DRYLINE AS AN INTENSIFYING LOW LEVEL JET
DEVELOPS AHEAD OF AN UPPER LOW. OVERNIGHT LOWS WILL THEREFORE ONLY
MANAGE TO DROP INTO THE UPPER 50S TO MID 60S ON THE CAPROCK AND MID
60S TO NEAR 70 ACROSS THE LOWER ELEVATIONS.
LONG TERM...
UPPER TROUGH WILL EXTEND FROM THE PACIFIC COAST OF CANADA THROUGH
THE GREAT BASIN THENCE DOWN INTO BAJA CALIFORNIA SUR ON SATURDAY
MORNING WITH RIDGING JUST TO OUR EAST. THIS WILL PLACE REGION IN
FAIRLY STOUT SOUTHWESTERLY FLOW REGIME WHICH WILL BECOME
INCREASINGLY NEGATIVELY TILTED ACROSS THE SOUTHWESTERN STATES WITH
TIME. SYSTEM EVOLUTION INTO SUNDAY REMAINS COMPLEX WITH A SECONDARY
LOBE OF ENERGY THAT WILL ROTATE OUT OF THE INTER-MOUNTAIN WEST INTO
THE SOUTHERN PLAINS BEFORE BECOMING ABSORBED BY THE PARENT LOW
CENTER ACROSS THE NORTHERN PLAINS. BY MID WEEK...RIDGING BUILDS
BACK INTO THE CENTRAL STATES AS NEXT LARGE UPPER LOW APPROACHES THE
PACIFIC NORTHWEST. THIS NWRN LOW STALLS OUT AS BLOCKING RIDGE
STRENGTHENS ACROSS THE CENTRAL PART OF THE COUNTRY. THE RESULT OF
THIS FOR US WILL BE A SLOSHING DRYLINE THROUGH MUCH OF THE UPCOMING
WEEK.
SATURDAY AFTERNOON WILL BRING A CHANCE FOR TSTMS ACROSS THE ROLLING
PLAINS AND THEN THINGS WILL STAY DRY THE REMAINDER OF THE WEEKEND
WITH THE BEST LIFT AND INSTABILITY TO OUR EAST. WEST OF THE
ESCARPMENT...VERY DRY AND BREEZY CONDITIONS CONTINUE TO POINT TO
CRITICAL FIRE WEATHER SATURDAY AFTERNOON INTO THE EVENING HOURS. WE
WILL CONTINUE INHERITED FIRE WEATHER WATCH FOR THAT PERIOD--PLEASE
SEE LBBFWFLUB. BY MONDAY NIGHT...AFOREMENTIONED SECONDARY LOW
WILL DRIVE A COLD FRONT INTO THE AREA. ASIDE FROM POSSIBLY
BRINGING HIGHS BACK DOWN INTO THE UPPER 80S...NOT JUST A WHOLE LOT
OF SENSIBLE WX CHANGE. HOWEVER...INTO THURSDAY...THERE IS AT LEAST
SOME INCREASING MOISTURE OUT EAST WHICH COULD YIELD INCREASING
RAIN CHANCES WEDNESDAY...THURSDAY...AND FRIDAY.
&&
.PRELIMINARY POINT TEMPS/POPS...
FRIONA 58 93 55 87 53 / 0 0 0 0 0
TULIA 61 95 58 90 56 / 10 10 10 0 0
PLAINVIEW 59 96 57 90 58 / 0 10 10 0 0
LEVELLAND 63 97 58 90 58 / 0 0 0 0 0
LUBBOCK 65 98 59 91 59 / 0 10 0 0 0
DENVER CITY 65 96 60 91 62 / 0 0 0 0 0
BROWNFIELD 65 98 60 92 61 / 0 0 0 0 0
CHILDRESS 68 99 64 95 61 / 10 20 20 0 10
SPUR 65 102 61 95 62 / 10 20 10 0 10
ASPERMONT 70 101 64 99 63 / 10 20 20 0 10
&&
.LUB WATCHES/WARNINGS/ADVISORIES...
FIRE WEATHER WATCH FROM SATURDAY AFTERNOON THROUGH SATURDAY
EVENING FOR THE FOLLOWING ZONES:
TXZ021>024-027>030-033>036-039>042.
&&
$$
23/99/99
877
FXUS64 KLUB 171711 AAB
AFDLUB
AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE LUBBOCK TX
1211 PM CDT FRI MAY 17 2013
.UPDATE...
THE FOG HAS LIFTED AND LOW CLOUDS CLEARED OUT OF ALL BUT THE FAR
NORTHEASTERN ZONES...WHICH WILL SEE THE SUN VERY SOON. HAVE UPDATED
THE PRODUCTS TO REFLECT THIS. OTHERWISE...THE ONGOING FORECAST
REMAINS ON TRACK. THE MAIN FOCUS FOR THIS AFTERNOON WILL BE ON THE
HEAT...WITH MANY SPOTS NEAR OR ABOVE THE TRIPLE DIGIT MARK. THE
EXCEPTION WILL LIKELY BE ACROSS THE NORTHEAST ZONES WHERE MOIST
EASTERLY FLOW WILL PERSIST THROUGH THE DAY AND HELP KEEP HIGHS
DOWN IN THE 90S. OF NOTE...THE RECORD HIGH AT LUBBOCK IS 101
DEGREES /SET IN 1996/...SO IT WILL BE A CLOSE CALL WHETHER THIS
CAN BE TOUCHED OR ECLIPSED. AS REFLECTED IN THE BROAD FOG/STRATUS
DECK THIS MORNING...THE LOW-LEVEL MOISTURE MADE A STRONG PUSH WELL
UP ONTO THE CAPROCK THIS MORNING. HOWEVER...THE MOISTURE WAS
ALREADY MIXING OUT AND EXPECT THE EFFECTIVE DRYLINE TO STRETCH
ROUGHLY FROM A TULIA TO GUTHRIE LINE BY LATE THIS AFTERNOON. EYES
WILL BE ON THIS BOUNDARY FOR POSSIBLE ISOLATED MOIST CONVECTION
LATE THIS AFTERNOON OR EARLY THIS EVENING...BUT INDICATIONS ARE
THAT WARMING TEMPERATURES ALOFT AND MINIMAL LARGE SCALE SUPPORT
WILL KEEP THE INSTABILITY CAPPED LOCALLY. THE EXCEPTION TO THIS
MAY BE TO OUR EAST INTO THE BIG COUNTRY WHERE ISOLATED STORMS MAY
BRIEFLY FORM WHERE LOW-LEVEL CONVERGENCE AND INTENSE HEATING ARE
MAXIMIZED. THAT SAID...IF A STORM CAN FORM ALONG THE DRYLINE
LOCALLY...THERE WILL BE STRONG INSTABILITY TO WORK WITH AND MODEST
SHEAR...SO IT WOULD QUICKLY INTENSIFY. THUS...WE WILL CONTINUE TO
MONITOR THUNDER CHANCES THROUGH THE AFTERNOON...THOUGH POPS AT OR
BELOW 10 PERCENT APPEAR WARRANTED ATTM.
&&
.PREV DISCUSSION... /ISSUED 853 AM CDT FRI MAY 17 2013/
UPDATE...
FOG AND LOW STRATUS FRONT HAS MOVED SOUTHWESTWARD TO A HART TO
LUBBOCK TO POST TO ASPERMONT LINE. THIS IS SLIGHTLY FURTHER SOUTH
AND WEST THAN EARLIER ANTICIPATED AND HAVE UPDATED THE GRIDS TO
REFLECT THIS. FOG HAS BEEN LOCALLY DENSE AT TIMES...WITH THE LUBBOCK
AIRPORT DROPPING AS LOW AS 1/8 MILE RECENTLY...THOUGH WE DO EXPECT
THE VISIBILITIES TO RAPIDLY IMPROVE OVER THE NEXT HOUR OR TWO.
HENCE...HAVE CHOSEN TO HANDLE THE PATCHY DENSE FOG WITH SHORT TERM
FORECASTS. REMAINDER OF THE FORECAST REMAINS UNCHANGED ATTM.
UPDATED PRODUCTS HAVE BEEN SENT.
PREV DISCUSSION... /ISSUED 711 AM CDT FRI MAY 17 2013/
AVIATION...
FOG WILL CONTINUE AT KCDS THIS MORNING AS LIFR CEILINGS AND IFR
VISIBILITIES HAVE PERSISTED FOR MULTIPLE HOURS. WHILE CONDITIONS
SHOULD IMPROVE SOMEWHAT AFTER SUNRISE...SOME DEGREE OF LOW
CLOUDINESS WILL LIKELY PERSIST THROUGH MUCH OF THE MORNING. VFR
CONDITIONS WILL PREVAIL BEGINNING THIS AFTERNOON...BUT MAY SEE FOG
DEVELOP AGAIN TONIGHT.
IT APPEARS THAT KLBB WILL ALSO SEE SOME FOG ROLL IN EARLY THIS
MORNING BEFORE MIXING CLEARS SKIES OUT BY 15Z. WENT WITH A TEMPO
GROUP ADVERTISING MVFR CONDITIONS THROUGH 14Z...FOLLOWED BY VFR
CONDITIONS.
PREV DISCUSSION... /ISSUED 358 AM CDT FRI MAY 17 2013/
SHORT TERM...
CONCERNS THIS MORNING FOCUS AROUND FOG AND STRATUS PUSHING WESTWARD
ACROSS THE AREA. CHILDRESS CURRENTLY SOCKED IN WITH VISIBILITIES
AROUND 1 MILE. WILL CONTINUE TO SEE VISIBILITIES DROP ACROSS CENTRAL
TO EASTERN PORTIONS OF THE EXTREME SOUTHERN PANHANDLE...NORTHERN TO
CENTRAL ROLLING PLAINS...AND ADJACENT SECTIONS OF THE SOUTH PLAINS
THIS MORNING AS WINDS REMAIN BACKED AHEAD OF A SURFACE TROUGH AND IN
WAKE OF A RETREATING DRYLINE.
MIXING WILL COMMENCE AFTER SUNRISE THIS MORNING AND MIX OUT LOW
LEVEL MOISTURE. THE EXTREME SOUTHEAST PANHANDLE AND SURROUNDING
AREAS WILL NOT MIX OUT AS QUICKLY WITH LOW LEVEL WINDS MAINTAINING
AN UPSLOPE COMPONENT OUT OF THE EAST AHEAD OF THE AFOREMENTIONED
SURFACE TROUGH...THUS KEEPING FOG AND STRATUS ACROSS THE AREA
THROUGHOUT MUCH OF THE MORNING. THIS WILL PUT A DAMPER ON
TEMPERATURES ACROSS NORTHEAST ZONES WHEN COMPARED TO LOCATIONS TO
THE SOUTH AND WEST. THE HOTTEST DAY OF 2013 THUS FAR WILL SEE AREAS
IN CLOSE PROXIMITY TO THE EXTREME SOUTHEAST PANHANDLE HOLD IN THE
LOW TO MID 90S WHILE EVERYWHERE ELSE SOARS INTO THE UPPER 90S TO LOW
100S UNDERNEATH H85 TEMPERATURES OF 30-31C.
KEPT THE FORECAST DRY TODAY AND TONIGHT AS HEIGHTS BUILD ALOFT...H70
TEMPERATURES WARM TO AROUND 13-14C DECREASING INSTABILITY...AND
MOISTURE REMAINS ANEMIC. DRYLINE SHOULD BE POSITIONED NEAR THE EDGE
OF THE CAPROCK BY MID TO LATE AFTERNOON...BUT CAPPING WILL BE TOO
STOUT TO PROMOTE CONVECTION DUE TO A STRENGTHENING ELEVATED MIXED LAYER
OWING TO WARM AIR ADVECTION.
WILL LIKELY SEE PATCHY FOG AFTER MIDNIGHT TONIGHT ACROSS NORTHEAST
ZONES BEHIND THE RETREATING DRYLINE AS AN INTENSIFYING LOW LEVEL JET
DEVELOPS AHEAD OF AN UPPER LOW. OVERNIGHT LOWS WILL THEREFORE ONLY
MANAGE TO DROP INTO THE UPPER 50S TO MID 60S ON THE CAPROCK AND MID
60S TO NEAR 70 ACROSS THE LOWER ELEVATIONS.
LONG TERM...
UPPER TROUGH WILL EXTEND FROM THE PACIFIC COAST OF CANADA THROUGH
THE GREAT BASIN THENCE DOWN INTO BAJA CALIFORNIA SUR ON SATURDAY
MORNING WITH RIDGING JUST TO OUR EAST. THIS WILL PLACE REGION IN
FAIRLY STOUT SOUTHWESTERLY FLOW REGIME WHICH WILL BECOME
INCREASINGLY NEGATIVELY TILTED ACROSS THE SOUTHWESTERN STATES WITH
TIME. SYSTEM EVOLUTION INTO SUNDAY REMAINS COMPLEX WITH A SECONDARY
LOBE OF ENERGY THAT WILL ROTATE OUT OF THE INTER-MOUNTAIN WEST INTO
THE SOUTHERN PLAINS BEFORE BECOMING ABSORBED BY THE PARENT LOW
CENTER ACROSS THE NORTHERN PLAINS. BY MID WEEK...RIDGING BUILDS
BACK INTO THE CENTRAL STATES AS NEXT LARGE UPPER LOW APPROACHES THE
PACIFIC NORTHWEST. THIS NWRN LOW STALLS OUT AS BLOCKING RIDGE
STRENGTHENS ACROSS THE CENTRAL PART OF THE COUNTRY. THE RESULT OF
THIS FOR US WILL BE A SLOSHING DRYLINE THROUGH MUCH OF THE UPCOMING
WEEK.
SATURDAY AFTERNOON WILL BRING A CHANCE FOR TSTMS ACROSS THE ROLLING
PLAINS AND THEN THINGS WILL STAY DRY THE REMAINDER OF THE WEEKEND
WITH THE BEST LIFT AND INSTABILITY TO OUR EAST. WEST OF THE
ESCARPMENT...VERY DRY AND BREEZY CONDITIONS CONTINUE TO POINT TO
CRITICAL FIRE WEATHER SATURDAY AFTERNOON INTO THE EVENING HOURS. WE
WILL CONTINUE INHERITED FIRE WEATHER WATCH FOR THAT PERIOD--PLEASE
SEE LBBFWFLUB. BY MONDAY NIGHT...AFOREMENTIONED SECONDARY LOW
WILL DRIVE A COLD FRONT INTO THE AREA. ASIDE FROM POSSIBLY
BRINGING HIGHS BACK DOWN INTO THE UPPER 80S...NOT JUST A WHOLE LOT
OF SENSIBLE WX CHANGE. HOWEVER...INTO THURSDAY...THERE IS AT LEAST
SOME INCREASING MOISTURE OUT EAST WHICH COULD YIELD INCREASING
RAIN CHANCES WEDNESDAY...THURSDAY...AND FRIDAY.
&&
.PRELIMINARY POINT TEMPS/POPS...
FRIONA 98 58 93 55 87 / 0 0 0 0 0
TULIA 100 61 95 58 90 / 10 10 10 10 0
PLAINVIEW 100 59 96 57 90 / 0 0 10 10 0
LEVELLAND 99 63 97 58 90 / 0 0 0 0 0
LUBBOCK 100 65 98 59 91 / 0 0 10 0 0
DENVER CITY 98 65 96 60 91 / 0 0 0 0 0
BROWNFIELD 99 65 98 60 92 / 0 0 0 0 0
CHILDRESS 93 68 99 64 95 / 10 10 20 20 0
SPUR 101 65 102 61 95 / 0 10 20 10 0
ASPERMONT 103 70 101 64 99 / 10 10 20 20 0
&&
.LUB WATCHES/WARNINGS/ADVISORIES...
FIRE WEATHER WATCH FROM SATURDAY AFTERNOON THROUGH SATURDAY
EVENING FOR THE FOLLOWING ZONES:
TXZ021>024-027>030-033>036-039>042.
&&
$$
23/99
510
FXUS64 KLUB 171353 AAA
AFDLUB
AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE LUBBOCK TX
853 AM CDT FRI MAY 17 2013
.UPDATE...
FOG AND LOW STRATUS FRONT HAS MOVED SOUTHWESTWARD TO A HART TO
LUBBOCK TO POST TO ASPERMONT LINE. THIS IS SLIGHTLY FURTHER SOUTH
AND WEST THAN EARLIER ANTICIPATED AND HAVE UPDATED THE GRIDS TO
REFLECT THIS. FOG HAS BEEN LOCALLY DENSE AT TIMES...WITH THE LUBBOCK
AIRPORT DROPPING AS LOW AS 1/8 MILE RECENTLY...THOUGH WE DO EXPECT
THE VISIBILITIES TO RAPIDLY IMPROVE OVER THE NEXT HOUR OR TWO.
HENCE...HAVE CHOSEN TO HANDLE THE PATCHY DENSE FOG WITH SHORT TERM
FORECASTS. REMAINDER OF THE FORECAST REMAINS UNCHANGED ATTM.
UPDATED PRODUCTS HAVE BEEN SENT.
&&
.PREV DISCUSSION... /ISSUED 711 AM CDT FRI MAY 17 2013/
AVIATION...
FOG WILL CONTINUE AT KCDS THIS MORNING AS LIFR CEILINGS AND IFR
VISIBILITIES HAVE PERSISTED FOR MULTIPLE HOURS. WHILE CONDITIONS
SHOULD IMPROVE SOMEWHAT AFTER SUNRISE...SOME DEGREE OF LOW
CLOUDINESS WILL LIKELY PERSIST THROUGH MUCH OF THE MORNING. VFR
CONDITIONS WILL PREVAIL BEGINNING THIS AFTERNOON...BUT MAY SEE FOG
DEVELOP AGAIN TONIGHT.
IT APPEARS THAT KLBB WILL ALSO SEE SOME FOG ROLL IN EARLY THIS
MORNING BEFORE MIXING CLEARS SKIES OUT BY 15Z. WENT WITH A TEMPO
GROUP ADVERTISING MVFR CONDITIONS THROUGH 14Z...FOLLOWED BY VFR
CONDITIONS.
PREV DISCUSSION... /ISSUED 358 AM CDT FRI MAY 17 2013/
SHORT TERM...
CONCERNS THIS MORNING FOCUS AROUND FOG AND STRATUS PUSHING WESTWARD
ACROSS THE AREA. CHILDRESS CURRENTLY SOCKED IN WITH VISIBILITIES
AROUND 1 MILE. WILL CONTINUE TO SEE VISIBILITIES DROP ACROSS CENTRAL
TO EASTERN PORTIONS OF THE EXTREME SOUTHERN PANHANDLE...NORTHERN TO
CENTRAL ROLLING PLAINS...AND ADJACENT SECTIONS OF THE SOUTH PLAINS
THIS MORNING AS WINDS REMAIN BACKED AHEAD OF A SURFACE TROUGH AND IN
WAKE OF A RETREATING DRYLINE.
MIXING WILL COMMENCE AFTER SUNRISE THIS MORNING AND MIX OUT LOW
LEVEL MOISTURE. THE EXTREME SOUTHEAST PANHANDLE AND SURROUNDING
AREAS WILL NOT MIX OUT AS QUICKLY WITH LOW LEVEL WINDS MAINTAINING
AN UPSLOPE COMPONENT OUT OF THE EAST AHEAD OF THE AFOREMENTIONED
SURFACE TROUGH...THUS KEEPING FOG AND STRATUS ACROSS THE AREA
THROUGHOUT MUCH OF THE MORNING. THIS WILL PUT A DAMPER ON
TEMPERATURES ACROSS NORTHEAST ZONES WHEN COMPARED TO LOCATIONS TO
THE SOUTH AND WEST. THE HOTTEST DAY OF 2013 THUS FAR WILL SEE AREAS
IN CLOSE PROXIMITY TO THE EXTREME SOUTHEAST PANHANDLE HOLD IN THE
LOW TO MID 90S WHILE EVERYWHERE ELSE SOARS INTO THE UPPER 90S TO LOW
100S UNDERNEATH H85 TEMPERATURES OF 30-31C.
KEPT THE FORECAST DRY TODAY AND TONIGHT AS HEIGHTS BUILD ALOFT...H70
TEMPERATURES WARM TO AROUND 13-14C DECREASING INSTABILITY...AND
MOISTURE REMAINS ANEMIC. DRYLINE SHOULD BE POSITIONED NEAR THE EDGE
OF THE CAPROCK BY MID TO LATE AFTERNOON...BUT CAPPING WILL BE TOO
STOUT TO PROMOTE CONVECTION DUE TO A STRENGTHENING ELEVATED MIXED LAYER
OWING TO WARM AIR ADVECTION.
WILL LIKELY SEE PATCHY FOG AFTER MIDNIGHT TONIGHT ACROSS NORTHEAST
ZONES BEHIND THE RETREATING DRYLINE AS AN INTENSIFYING LOW LEVEL JET
DEVELOPS AHEAD OF AN UPPER LOW. OVERNIGHT LOWS WILL THEREFORE ONLY
MANAGE TO DROP INTO THE UPPER 50S TO MID 60S ON THE CAPROCK AND MID
60S TO NEAR 70 ACROSS THE LOWER ELEVATIONS.
LONG TERM...
UPPER TROUGH WILL EXTEND FROM THE PACIFIC COAST OF CANADA THROUGH
THE GREAT BASIN THENCE DOWN INTO BAJA CALIFORNIA SUR ON SATURDAY
MORNING WITH RIDGING JUST TO OUR EAST. THIS WILL PLACE REGION IN
FAIRLY STOUT SOUTHWESTERLY FLOW REGIME WHICH WILL BECOME
INCREASINGLY NEGATIVELY TILTED ACROSS THE SOUTHWESTERN STATES WITH
TIME. SYSTEM EVOLUTION INTO SUNDAY REMAINS COMPLEX WITH A SECONDARY
LOBE OF ENERGY THAT WILL ROTATE OUT OF THE INTER-MOUNTAIN WEST INTO
THE SOUTHERN PLAINS BEFORE BECOMING ABSORBED BY THE PARENT LOW
CENTER ACROSS THE NORTHERN PLAINS. BY MID WEEK...RIDGING BUILDS
BACK INTO THE CENTRAL STATES AS NEXT LARGE UPPER LOW APPROACHES THE
PACIFIC NORTHWEST. THIS NWRN LOW STALLS OUT AS BLOCKING RIDGE
STRENGTHENS ACROSS THE CENTRAL PART OF THE COUNTRY. THE RESULT OF
THIS FOR US WILL BE A SLOSHING DRYLINE THROUGH MUCH OF THE UPCOMING
WEEK.
SATURDAY AFTERNOON WILL BRING A CHANCE FOR TSTMS ACROSS THE ROLLING
PLAINS AND THEN THINGS WILL STAY DRY THE REMAINDER OF THE WEEKEND
WITH THE BEST LIFT AND INSTABILITY TO OUR EAST. WEST OF THE
ESCARPMENT...VERY DRY AND BREEZY CONDITIONS CONTINUE TO POINT TO
CRITICAL FIRE WEATHER SATURDAY AFTERNOON INTO THE EVENING HOURS. WE
WILL CONTINUE INHERITED FIRE WEATHER WATCH FOR THAT PERIOD--PLEASE
SEE LBBFWFLUB. BY MONDAY NIGHT...AFOREMENTIONED SECONDARY LOW
WILL DRIVE A COLD FRONT INTO THE AREA. ASIDE FROM POSSIBLY
BRINGING HIGHS BACK DOWN INTO THE UPPER 80S...NOT JUST A WHOLE LOT
OF SENSIBLE WX CHANGE. HOWEVER...INTO THURSDAY...THERE IS AT LEAST
SOME INCREASING MOISTURE OUT EAST WHICH COULD YIELD INCREASING
RAIN CHANCES WEDNESDAY...THURSDAY...AND FRIDAY.
&&
.PRELIMINARY POINT TEMPS/POPS...
FRIONA 98 58 93 55 87 / 0 0 0 0 0
TULIA 100 61 95 58 90 / 0 0 10 10 0
PLAINVIEW 100 59 96 57 90 / 0 0 10 10 0
LEVELLAND 99 63 97 58 90 / 0 0 0 0 0
LUBBOCK 100 65 98 59 91 / 0 0 10 0 0
DENVER CITY 98 65 96 60 91 / 0 0 0 0 0
BROWNFIELD 99 65 98 60 92 / 0 0 0 0 0
CHILDRESS 93 68 99 64 95 / 0 0 20 20 0
SPUR 101 65 102 61 95 / 0 0 20 10 0
ASPERMONT 103 70 101 64 99 / 0 0 20 20 0
&&
.LUB WATCHES/WARNINGS/ADVISORIES...
FIRE WEATHER WATCH FROM SATURDAY AFTERNOON THROUGH SATURDAY
EVENING FOR THE FOLLOWING ZONES:
TXZ021>024-027>030-033>036-039>042.
&&
$$
23/99
684
FXUS64 KLUB 171211
AFDLUB
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LUBBOCK TX
711 AM CDT FRI MAY 17 2013
.AVIATION...
FOG WILL CONTINUE AT KCDS THIS MORNING AS LIFR CEILINGS AND IFR
VISIBILITIES HAVE PERSISTED FOR MULTIPLE HOURS. WHILE CONDITIONS
SHOULD IMPROVE SOMEWHAT AFTER SUNRISE...SOME DEGREE OF LOW
CLOUDINESS WILL LIKELY PERSIST THROUGH MUCH OF THE MORNING. VFR
CONDITIONS WILL PREVAIL BEGINNING THIS AFTERNOON...BUT MAY SEE FOG
DEVELOP AGAIN TONIGHT.
IT APPEARS THAT KLBB WILL ALSO SEE SOME FOG ROLL IN EARLY THIS
MORNING BEFORE MIXING CLEARS SKIES OUT BY 15Z. WENT WITH A TEMPO
GROUP ADVERTISING MVFR CONDITIONS THROUGH 14Z...FOLLOWED BY VFR
CONDITIONS.
&&
.PREV DISCUSSION... /ISSUED 358 AM CDT FRI MAY 17 2013/
SHORT TERM...
CONCERNS THIS MORNING FOCUS AROUND FOG AND STRATUS PUSHING WESTWARD
ACROSS THE AREA. CHILDRESS CURRENTLY SOCKED IN WITH VISIBILITIES
AROUND 1 MILE. WILL CONTINUE TO SEE VISIBILITIES DROP ACROSS CENTRAL
TO EASTERN PORTIONS OF THE EXTREME SOUTHERN PANHANDLE...NORTHERN TO
CENTRAL ROLLING PLAINS...AND ADJACENT SECTIONS OF THE SOUTH PLAINS
THIS MORNING AS WINDS REMAIN BACKED AHEAD OF A SURFACE TROUGH AND IN
WAKE OF A RETREATING DRYLINE.
MIXING WILL COMMENCE AFTER SUNRISE THIS MORNING AND MIX OUT LOW
LEVEL MOISTURE. THE EXTREME SOUTHEAST PANHANDLE AND SURROUNDING
AREAS WILL NOT MIX OUT AS QUICKLY WITH LOW LEVEL WINDS MAINTAINING
AN UPSLOPE COMPONENT OUT OF THE EAST AHEAD OF THE AFOREMENTIONED
SURFACE TROUGH...THUS KEEPING FOG AND STRATUS ACROSS THE AREA
THROUGHOUT MUCH OF THE MORNING. THIS WILL PUT A DAMPER ON
TEMPERATURES ACROSS NORTHEAST ZONES WHEN COMPARED TO LOCATIONS TO
THE SOUTH AND WEST. THE HOTTEST DAY OF 2013 THUS FAR WILL SEE AREAS
IN CLOSE PROXIMITY TO THE EXTREME SOUTHEAST PANHANDLE HOLD IN THE
LOW TO MID 90S WHILE EVERYWHERE ELSE SOARS INTO THE UPPER 90S TO LOW
100S UNDERNEATH H85 TEMPERATURES OF 30-31C.
KEPT THE FORECAST DRY TODAY AND TONIGHT AS HEIGHTS BUILD ALOFT...H70
TEMPERATURES WARM TO AROUND 13-14C DECREASING INSTABILITY...AND
MOISTURE REMAINS ANEMIC. DRYLINE SHOULD BE POSITIONED NEAR THE EDGE
OF THE CAPROCK BY MID TO LATE AFTERNOON...BUT CAPPING WILL BE TOO
STOUT TO PROMOTE CONVECTION DUE TO A STRENGTHENING ELEVATED MIXED LAYER
OWING TO WARM AIR ADVECTION.
WILL LIKELY SEE PATCHY FOG AFTER MIDNIGHT TONIGHT ACROSS NORTHEAST
ZONES BEHIND THE RETREATING DRYLINE AS AN INTENSIFYING LOW LEVEL JET
DEVELOPS AHEAD OF AN UPPER LOW. OVERNIGHT LOWS WILL THEREFORE ONLY
MANAGE TO DROP INTO THE UPPER 50S TO MID 60S ON THE CAPROCK AND MID
60S TO NEAR 70 ACROSS THE LOWER ELEVATIONS.
LONG TERM...
UPPER TROUGH WILL EXTEND FROM THE PACIFIC COAST OF CANADA THROUGH
THE GREAT BASIN THENCE DOWN INTO BAJA CALIFORNIA SUR ON SATURDAY
MORNING WITH RIDGING JUST TO OUR EAST. THIS WILL PLACE REGION IN
FAIRLY STOUT SOUTHWESTERLY FLOW REGIME WHICH WILL BECOME
INCREASINGLY NEGATIVELY TILTED ACROSS THE SOUTHWESTERN STATES WITH
TIME. SYSTEM EVOLUTION INTO SUNDAY REMAINS COMPLEX WITH A SECONDARY
LOBE OF ENERGY THAT WILL ROTATE OUT OF THE INTER-MOUNTAIN WEST INTO
THE SOUTHERN PLAINS BEFORE BECOMING ABSORBED BY THE PARENT LOW
CENTER ACROSS THE NORTHERN PLAINS. BY MID WEEK...RIDGING BUILDS
BACK INTO THE CENTRAL STATES AS NEXT LARGE UPPER LOW APPROACHES THE
PACIFIC NORTHWEST. THIS NWRN LOW STALLS OUT AS BLOCKING RIDGE
STRENGTHENS ACROSS THE CENTRAL PART OF THE COUNTRY. THE RESULT OF
THIS FOR US WILL BE A SLOSHING DRYLINE THROUGH MUCH OF THE UPCOMING
WEEK.
SATURDAY AFTERNOON WILL BRING A CHANCE FOR TSTMS ACROSS THE ROLLING
PLAINS AND THEN THINGS WILL STAY DRY THE REMAINDER OF THE WEEKEND
WITH THE BEST LIFT AND INSTABILITY TO OUR EAST. WEST OF THE
ESCARPMENT...VERY DRY AND BREEZY CONDITIONS CONTINUE TO POINT TO
CRITICAL FIRE WEATHER SATURDAY AFTERNOON INTO THE EVENING HOURS. WE
WILL CONTINUE INHERITED FIRE WEATHER WATCH FOR THAT PERIOD--PLEASE
SEE LBBFWFLUB. BY MONDAY NIGHT...AFOREMENTIONED SECONDARY LOW
WILL DRIVE A COLD FRONT INTO THE AREA. ASIDE FROM POSSIBLY
BRINGING HIGHS BACK DOWN INTO THE UPPER 80S...NOT JUST A WHOLE LOT
OF SENSIBLE WX CHANGE. HOWEVER...INTO THURSDAY...THERE IS AT LEAST
SOME INCREASING MOISTURE OUT EAST WHICH COULD YIELD INCREASING
RAIN CHANCES WEDNESDAY...THURSDAY...AND FRIDAY.
&&
.PRELIMINARY POINT TEMPS/POPS...
FRIONA 98 58 93 55 87 / 0 0 0 0 0
TULIA 100 61 95 58 90 / 0 0 10 10 0
PLAINVIEW 100 59 96 57 90 / 0 0 10 10 0
LEVELLAND 99 63 97 58 90 / 0 0 0 0 0
LUBBOCK 100 65 98 59 91 / 0 0 10 0 0
DENVER CITY 98 65 96 60 91 / 0 0 0 0 0
BROWNFIELD 99 65 98 60 92 / 0 0 0 0 0
CHILDRESS 93 68 99 64 95 / 0 0 20 20 0
SPUR 101 65 102 61 95 / 0 0 20 10 0
ASPERMONT 103 70 101 64 99 / 0 0 20 20 0
&&
.LUB WATCHES/WARNINGS/ADVISORIES...
FIRE WEATHER WATCH FROM SATURDAY AFTERNOON THROUGH SATURDAY
EVENING FOR THE FOLLOWING ZONES:
TXZ021>024-027>030-033>036-039>042.
&&
$$
31
139
FXUS64 KLUB 170858
AFDLUB
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LUBBOCK TX
358 AM CDT FRI MAY 17 2013
.SHORT TERM...
CONCERNS THIS MORNING FOCUS AROUND FOG AND STRATUS PUSHING WESTWARD
ACROSS THE AREA. CHILDRESS CURRENTLY SOCKED IN WITH VISIBILITIES
AROUND 1 MILE. WILL CONTINUE TO SEE VISIBILITIES DROP ACROSS CENTRAL
TO EASTERN PORTIONS OF THE EXTREME SOUTHERN PANHANDLE...NORTHERN TO
CENTRAL ROLLING PLAINS...AND ADJACENT SECTIONS OF THE SOUTH PLAINS
THIS MORNING AS WINDS REMAIN BACKED AHEAD OF A SURFACE TROUGH AND IN
WAKE OF A RETREATING DRYLINE.
MIXING WILL COMMENCE AFTER SUNRISE THIS MORNING AND MIX OUT LOW
LEVEL MOISTURE. THE EXTREME SOUTHEAST PANHANDLE AND SURROUNDING
AREAS WILL NOT MIX OUT AS QUICKLY WITH LOW LEVEL WINDS MAINTAINING
AN UPSLOPE COMPONENT OUT OF THE EAST AHEAD OF THE AFOREMENTIONED
SURFACE TROUGH...THUS KEEPING FOG AND STRATUS ACROSS THE AREA
THROUGHOUT MUCH OF THE MORNING. THIS WILL PUT A DAMPER ON
TEMPERATURES ACROSS NORTHEAST ZONES WHEN COMPARED TO LOCATIONS TO
THE SOUTH AND WEST. THE HOTTEST DAY OF 2013 THUS FAR WILL SEE AREAS
IN CLOSE PROXIMITY TO THE EXTREME SOUTHEAST PANHANDLE HOLD IN THE
LOW TO MID 90S WHILE EVERYWHERE ELSE SOARS INTO THE UPPER 90S TO LOW
100S UNDERNEATH H85 TEMPERATURES OF 30-31C.
KEPT THE FORECAST DRY TODAY AND TONIGHT AS HEIGHTS BUILD ALOFT...H70
TEMPERATURES WARM TO AROUND 13-14C DECREASING INSTABILITY...AND
MOISTURE REMAINS ANEMIC. DRYLINE SHOULD BE POSITIONED NEAR THE EDGE
OF THE CAPROCK BY MID TO LATE AFTERNOON...BUT CAPPING WILL BE TOO
STOUT TO PROMOTE CONVECTION DUE TO A STRENGTHENING ELEVATED MIXED LAYER
OWING TO WARM AIR ADVECTION.
WILL LIKELY SEE PATCHY FOG AFTER MIDNIGHT TONIGHT ACROSS NORTHEAST
ZONES BEHIND THE RETREATING DRYLINE AS AN INTENSIFYING LOW LEVEL JET
DEVELOPS AHEAD OF AN UPPER LOW. OVERNIGHT LOWS WILL THEREFORE ONLY
MANAGE TO DROP INTO THE UPPER 50S TO MID 60S ON THE CAPROCK AND MID
60S TO NEAR 70 ACROSS THE LOWER ELEVATIONS.
&&
.LONG TERM...
UPPER TROUGH WILL EXTEND FROM THE PACIFIC COAST OF CANADA THROUGH
THE GREAT BASIN THENCE DOWN INTO BAJA CALIFORNIA SUR ON SATURDAY
MORNING WITH RIDGING JUST TO OUR EAST. THIS WILL PLACE REGION IN
FAIRLY STOUT SOUTHWESTERLY FLOW REGIME WHICH WILL BECOME
INCREASINGLY NEGATIVELY TILTED ACROSS THE SOUTHWESTERN STATES WITH
TIME. SYSTEM EVOLUTION INTO SUNDAY REMAINS COMPLEX WITH A SECONDARY
LOBE OF ENERGY THAT WILL ROTATE OUT OF THE INTER-MOUNTAIN WEST INTO
THE SOUTHERN PLAINS BEFORE BECOMING ABSORBED BY THE PARENT LOW
CENTER ACROSS THE NORTHERN PLAINS. BY MID WEEK...RIDGING BUILDS
BACK INTO THE CENTRAL STATES AS NEXT LARGE UPPER LOW APPROACHES THE
PACIFIC NORTHWEST. THIS NWRN LOW STALLS OUT AS BLOCKING RIDGE
STRENGTHENS ACROSS THE CENTRAL PART OF THE COUNTRY. THE RESULT OF
THIS FOR US WILL BE A SLOSHING DRYLINE THROUGH MUCH OF THE UPCOMING
WEEK.
SATURDAY AFTERNOON WILL BRING A CHANCE FOR TSTMS ACROSS THE ROLLING
PLAINS AND THEN THINGS WILL STAY DRY THE REMAINDER OF THE WEEKEND
WITH THE BEST LIFT AND INSTABILITY TO OUR EAST. WEST OF THE
ESCARPMENT...VERY DRY AND BREEZY CONDITIONS CONTINUE TO POINT TO
CRITICAL FIRE WEATHER SATURDAY AFTERNOON INTO THE EVENING HOURS. WE
WILL CONTINUE INHERITED FIRE WEATHER WATCH FOR THAT PERIOD--PLEASE
SEE LBBFWFLUB. BY MONDAY NIGHT...AFOREMENTIONED SECONDARY LOW
WILL DRIVE A COLD FRONT INTO THE AREA. ASIDE FROM POSSIBLY
BRINGING HIGHS BACK DOWN INTO THE UPPER 80S...NOT JUST A WHOLE LOT
OF SENSIBLE WX CHANGE. HOWEVER...INTO THURSDAY...THERE IS AT LEAST
SOME INCREASING MOISTURE OUT EAST WHICH COULD YIELD INCREASING
RAIN CHANCES WEDNESDAY...THURSDAY...AND FRIDAY.
&&
.PRELIMINARY POINT TEMPS/POPS...
FRIONA 98 58 93 55 87 / 0 0 0 0 0
TULIA 100 61 95 58 90 / 0 0 10 10 0
PLAINVIEW 100 59 96 57 90 / 0 0 10 10 0
LEVELLAND 99 63 97 58 90 / 0 0 0 0 0
LUBBOCK 100 65 98 59 91 / 0 0 10 0 0
DENVER CITY 98 65 96 60 91 / 0 0 0 0 0
BROWNFIELD 99 65 98 60 92 / 0 0 0 0 0
CHILDRESS 93 68 99 64 95 / 0 0 20 20 0
SPUR 101 65 102 61 95 / 0 0 20 10 0
ASPERMONT 103 70 101 64 99 / 0 0 20 20 0
&&
.LUB WATCHES/WARNINGS/ADVISORIES...
FIRE WEATHER WATCH FROM SATURDAY AFTERNOON THROUGH SATURDAY
EVENING FOR THE FOLLOWING ZONES:
TXZ021>024-027>030-033>036-039>042.
&&
$$
31/26
013
FXUS64 KLUB 170444
AFDLUB
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LUBBOCK TX
1144 PM CDT THU MAY 16 2013
.AVIATION...
CIGS BELOW 1000FT WERE NOT FAR OFF TO THE EAST OF KCDS AND RAPIDLY
MOVING WEST. LOWERED VISBYS MAY LAG BEHIND THE ADVECTION OF LOW
STRATUS INTO THE TERMINAL. THERE STILL EXISTS HIGH UNCERTAINTY ON
WHETHER THESE CONDITIONS WILL MAKE IT INTO KLBB. BASED ON HOW FAST
THESE CLOUDS ARE MOVING AND TAKING A PERSISTENCE FORECAST INTO
ACCOUNT...WILL INCLUDE A TEMPO GROUP AT KLBB FOR FRIDAY MORNING.
REDUCED FLIGHT RULES WILL DISSIPATE OUT OF KLBB QUICKLY AFTER
SUNRISE BUT WILL LIKELY LINGER THROUGH MOST OF THE MORNING AT
KCDS.
&&
PREV DISCUSSION... /ISSUED 335 PM CDT THU MAY 16 2013/
SHORT TERM...
A WEAK UPPER LEVEL IMPULSE APPROACHING FORT SUMNER NEW MEXICO LATE
THIS AFTERNOON WILL CROSS THE EXTREME SOUTHERN TEXAS PANHANDLE AND
SOUTH PLAINS REGION EARLY THIS EVENING. SURFACE DRY-LINE HAS
DEVELOPED SLIGHTLY WEST OF EARLIER PROJECTIONS BUT HAS A DETERMINED
EASTERLY MOTION WITH DEEPLY MIXED DRY AND HOT AIRMASS TO THE WEST.
LATEST SHORT RANGE SOLUTIONS STILL SUGGEST SOME POTENTIAL FOR
ISOLATED HIGH-BASED THUNDERSTORMS TO DEVELOP INITIALLY JUST WEST OF
THE I-27 CORRIDOR BETWEEN 400 PM AND 500 PM...BEFORE EDGING OFF TO
THE EAST EARLY IN THE EVENING. CHANCES DIMINISH AFTER DARK WITH LOW
CHANCE OF STORMS SURVIVING AS FAR EAST AS CHILDRESS OR PADUCAH.
MIXED LAYER CAPES INDICATE ENERGY POTENTIAL NEAR 1500 JOULES PER
KILOGRAM OVER THE SOUTH-CENTRAL PANHANDLE AROUND 00Z SO WOULD
PRODUCE AN OUTSIDE RISK FOR A SEVERE WIND GUST OR EVEN LARGE HAIL
EVENT. IT SEEMS UNLIKELY THAT THESE STORMS WOULD TAP INTO THE HIGHER
CAPE AIRMASS LYING NEAR THE RED RIVER.
HEIGHTS ALOFT SHOULD BUILD ENOUGH TO SUPPRESS MENTIONABLE CHANCES FOR
THUNDER ON FRIDAY. BEST SUB-MENTIONABLE CHANCES MIGHT RUN FROM THE
EXTREME SOUTH-CENTRAL PANHANDLE INTO THE NORTHERN ROLLING PLAINS.
TEMPERATURES WILL ELEVATE TO THE WARMEST OF THE YEAR THUS FAR. MINOR
CHANGES FROM PREVIOUS FORECAST. RMCQUEEN
LONG TERM...
ONLY MINOR ADJUSTMENTS MADE TO THE ONGOING FORECAST. STILL EXPECT
MUCH ABOVE AVERAGE TEMPERATURES THOUGH WITH A GRADUAL MODERATING
TREND THROUGH TUESDAY. IN ADDITION...SEVERE STORMS WILL BE POSSIBLE
ALONG AND EAST OF A DRYLINE /ACROSS AT LEAST THE EASTERN ZONES/ LATE
SATURDAY WHILE ELEVATED TO CRITICAL FIRE WEATHER WILL DEVELOP WEST
OF THE DRYLINE.
AN UPPER LEVEL TROUGH CURRENTLY APPROACHING THE WESTERN CONUS WILL
ADVANCE STEADILY THROUGH THE WESTERN STATES WITH A LEAD NEGATIVELY
TILTED SHORTWAVE PROGGED TO EMERGE FROM THE SOUTHERN ROCKIES BY
LATE SATURDAY. IN ADVANCE OF THIS WAVE...A STOUT SOUTHERLY LLJ WILL
CARRY MOISTURE NORTHWARD INTO THE SOUTH PLAINS EARLY SATURDAY.
INITIALLY...THERE COULD EVEN BE A SMALL WINDOW FOR FOG ACROSS THE
NORTHEASTERN MOST ZONES WHERE A SFC BOUNDARY LINGERS WITH LIGHT BUT
MOIST EASTERLY UPSLOPE WINDS BEFORE BEING OVERTAKEN BY THE SOUTHERLY
LOW-LEVEL FLOW. PRESSURES WILL THEN FALL IN THE LEE OF THE ROCKIES
AND IN ADVANCE OF THE WAVE SATURDAY...WITH A TIGHTENING PRESSURE
GRADIENT RESULTING IN INCREASINGLY BREEZY WINDS THROUGH THE DAY. THE
LATEST GUIDANCE NOW SUGGESTS THE DRYLINE MAY MIX/ADVANCE A LITTLE
FURTHER EAST THAN EARLIER THOUGHT...WELL OFF THE CAPROCK...THOUGH
GIVEN THE SETUP WOULD NOT BE SURPRISED IF THE DRYLINE IS A LITTLE
FURTHER WEST THAT CURRENTLY PROGGED. THIS WILL BE IMPORTANT SINCE IT
APPEARS FORCING ALONG THE DRYLINE COUPLED WITH INCREASING UPPER
SUPPORT SHOULD PROMOTE SCATTERED DEEP MOIST CONVECTION TO DEVELOP
ALONG THE DRYLINE BY MID TO LATE AFTERNOON. CURRENT NWP DOES SUGGEST
MOISTURE WILL MIX OUT A FAIR AMOUNT ON THE MOIST SIDE OF THE
DRYLINE...BUT STILL COULD HAVE AS MUCH AS 1500-2000 J/KG OF SBCAPE.
THIS INSTABILITY AND INITIALLY WEAK BUT IMPROVING DEEP LAYER SHEAR
WILL LIKELY SUPPORT SEVERE CONVECTION. WEST OF THE DRYLINE...GUSTY
SOUTHWESTERLY WINDS...TEMPERATURES WELL INTO THE 90S AND HUMIDITIES
BELOW 10 PERCENT WILL CREATE CRITICAL FIRE WEATHER.
THE LEAD SHORTWAVE TROUGH WILL SWING INTO THE CENTRAL PLAINS ON
SUNDAY AND THIS WILL DRAG THE DRYLINE EAST OF THE AREA WITH
GUSTY...WARM AND DRY WESTERLY WINDS AREA WIDE. SIMILAR WEATHER WILL
FOLLOW ON MONDAY AS ANOTHER SHORTWAVE DIVES UNDER A DEVELOPING
CLOSED LOW ACROSS THE DAKOTAS. A WEAK BUT LIKELY DRY COLD FRONT WILL
FOLLOW MONDAY NIGHT WITH MINOR COOLING INTO TUESDAY. SOUTHERLY
LOW-LEVEL FLOW WILL THEN DEVELOP MIDWEEK WITH MOISTURE LEVELS
GRADUALLY RISING AS A DRYLINE BEGINS TO TAKE SHAPE SOMEWHERE IN/NEAR
THE AREA. THIS DRYLINE COULD BE THE FOCUS FOR INCREASING CONVECTIVE
CHANCES AS EARLY AS NEXT WEDNESDAY AND THURSDAY...THOUGH HEIGHTS
WILL ALSO BE BUILDING ALOFT IN ADVANCE OF A LARGE SLOW MOVING UPPER
LOW CENTERED NEAR THE PACIFIC NORTHWEST. GIVEN UNCERTAINTY IN
MOISTURE RETURN...DRYLINE LOCATION AND UPPER SUPPORT...HAVE LEFT
POPS BELOW MENTIONABLE LEVELS AT THE FAR END OF THE
EXTENDED...THOUGH DID TREND POPS UPWARD WITH THE DRYLINE EXPECTED TO
BE SOMEWHERE IN THE VICINITY.
FIRE WEATHER...
ELEVATED TO CRITICAL FIRE WEATHER CONDITIONS WILL DEVELOP WEST OF
THE DRYLINE ACROSS THE CAPROCK SATURDAY AFTERNOON. THIS WILL OCCUR
AS SUSTAINED SOUTHWESTERLY WINDS INCREASE TO 15-25 MPH AT THE 20 FT
LEVEL...TEMPERATURES CLIMB WELL INTO THE 90S AND HUMIDITIES PLUNGE
BELOW 10 PERCENT /TO AS LOW AS 5 PERCENT/. HENCE...HAVE DECIDED TO
ISSUE A FIRE WEATHER WATCH FOR SPOTS ON THE CAPROCK SATURDAY
AFTERNOON AND EVENING. THE DRYLINE WILL PUSH FURTHER EAST ON SUNDAY
AND MONDAY WITH TOASTY...DRY AND BREEZY CONDITIONS SPREADING OVER
THE ENTIRE AREA. THIS WILL RESULT IN WIDESPREAD ELEVATED TO CRITICAL
FIRE WEATHER AREA WIDE BOTH SUNDAY AND MONDAY AFTERNOONS BEFORE A
WEAK COLD FRONT MOVES THROUGH MONDAY NIGHT.
&&
.PRELIMINARY POINT TEMPS/POPS...
FRIONA 55 98 58 94 53 / 0 0 10 10 0
TULIA 58 100 61 95 57 / 10 10 10 10 10
PLAINVIEW 59 100 59 96 58 / 10 10 10 10 10
LEVELLAND 60 99 63 96 59 / 10 0 10 10 0
LUBBOCK 61 100 64 97 59 / 10 0 10 10 10
DENVER CITY 57 98 65 95 59 / 0 0 10 10 0
BROWNFIELD 59 99 65 95 60 / 10 0 10 10 0
CHILDRESS 64 96 68 99 63 / 20 10 10 20 30
SPUR 64 101 65 97 63 / 20 10 10 20 20
ASPERMONT 68 103 70 99 67 / 10 10 10 20 30
&&
.LUB WATCHES/WARNINGS/ADVISORIES...
FIRE WEATHER WATCH FROM SATURDAY AFTERNOON THROUGH SATURDAY
EVENING FOR THE FOLLOWING ZONES:
TXZ021>024-027>030-033>036-039>042.
&&
$$
01
471
FXUS64 KLUB 162351
AFDLUB
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LUBBOCK TX
651 PM CDT THU MAY 16 2013
.AVIATION...
ANOTHER ROUND OF LOW CIGS AND VISBYS ARE EXPECTED FRIDAY MORNING.
CONDITIONS WILL LIKELY BE LOWER AT KLBB IF CONDITIONS DO
DETERIORATE. MODELS CURRENTLY FORECAST THE EDGE OF THE CIGS/VISBYS
TO COME CLOSE TO THE TERMINAL. THESE LOWER CONDITIONS WILL LIKELY
SCOUR OUT QUICKLY AT KLBB BUT LINGER FOR SEVERAL HOURS AT KCDS
WHERE THERE WILL BE DEEPER MOISTURE.
&&
.PREV DISCUSSION... /ISSUED 335 PM CDT THU MAY 16 2013/
SHORT TERM...
A WEAK UPPER LEVEL IMPULSE APPROACHING FORT SUMNER NEW MEXICO LATE
THIS AFTERNOON WILL CROSS THE EXTREME SOUTHERN TEXAS PANHANDLE AND
SOUTH PLAINS REGION EARLY THIS EVENING. SURFACE DRY-LINE HAS
DEVELOPED SLIGHTLY WEST OF EARLIER PROJECTIONS BUT HAS A DETERMINED
EASTERLY MOTION WITH DEEPLY MIXED DRY AND HOT AIRMASS TO THE WEST.
LATEST SHORT RANGE SOLUTIONS STILL SUGGEST SOME POTENTIAL FOR
ISOLATED HIGH-BASED THUNDERSTORMS TO DEVELOP INITIALLY JUST WEST OF
THE I-27 CORRIDOR BETWEEN 400 PM AND 500 PM...BEFORE EDGING OFF TO
THE EAST EARLY IN THE EVENING. CHANCES DIMINISH AFTER DARK WITH LOW
CHANCE OF STORMS SURVIVING AS FAR EAST AS CHILDRESS OR PADUCAH.
MIXED LAYER CAPES INDICATE ENERGY POTENTIAL NEAR 1500 JOULES PER
KILOGRAM OVER THE SOUTH-CENTRAL PANHANDLE AROUND 00Z SO WOULD
PRODUCE AN OUTSIDE RISK FOR A SEVERE WIND GUST OR EVEN LARGE HAIL
EVENT. IT SEEMS UNLIKELY THAT THESE STORMS WOULD TAP INTO THE HIGHER
CAPE AIRMASS LYING NEAR THE RED RIVER.
HEIGHTS ALOFT SHOULD BUILD ENOUGH TO SUPPRESS MENTIONABLE CHANCES FOR
THUNDER ON FRIDAY. BEST SUB-MENTIONABLE CHANCES MIGHT RUN FROM THE
EXTREME SOUTH-CENTRAL PANHANDLE INTO THE NORTHERN ROLLING PLAINS.
TEMPERATURES WILL ELEVATE TO THE WARMEST OF THE YEAR THUS FAR. MINOR
CHANGES FROM PREVIOUS FORECAST. RMCQUEEN
LONG TERM...
ONLY MINOR ADJUSTMENTS MADE TO THE ONGOING FORECAST. STILL EXPECT
MUCH ABOVE AVERAGE TEMPERATURES THOUGH WITH A GRADUAL MODERATING
TREND THROUGH TUESDAY. IN ADDITION...SEVERE STORMS WILL BE POSSIBLE
ALONG AND EAST OF A DRYLINE /ACROSS AT LEAST THE EASTERN ZONES/ LATE
SATURDAY WHILE ELEVATED TO CRITICAL FIRE WEATHER WILL DEVELOP WEST
OF THE DRYLINE.
AN UPPER LEVEL TROUGH CURRENTLY APPROACHING THE WESTERN CONUS WILL
ADVANCE STEADILY THROUGH THE WESTERN STATES WITH A LEAD NEGATIVELY
TILTED SHORTWAVE PROGGED TO EMERGE FROM THE SOUTHERN ROCKIES BY
LATE SATURDAY. IN ADVANCE OF THIS WAVE...A STOUT SOUTHERLY LLJ WILL
CARRY MOISTURE NORTHWARD INTO THE SOUTH PLAINS EARLY SATURDAY.
INITIALLY...THERE COULD EVEN BE A SMALL WINDOW FOR FOG ACROSS THE
NORTHEASTERN MOST ZONES WHERE A SFC BOUNDARY LINGERS WITH LIGHT BUT
MOIST EASTERLY UPSLOPE WINDS BEFORE BEING OVERTAKEN BY THE SOUTHERLY
LOW-LEVEL FLOW. PRESSURES WILL THEN FALL IN THE LEE OF THE ROCKIES
AND IN ADVANCE OF THE WAVE SATURDAY...WITH A TIGHTENING PRESSURE
GRADIENT RESULTING IN INCREASINGLY BREEZY WINDS THROUGH THE DAY. THE
LATEST GUIDANCE NOW SUGGESTS THE DRYLINE MAY MIX/ADVANCE A LITTLE
FURTHER EAST THAN EARLIER THOUGHT...WELL OFF THE CAPROCK...THOUGH
GIVEN THE SETUP WOULD NOT BE SURPRISED IF THE DRYLINE IS A LITTLE
FURTHER WEST THAT CURRENTLY PROGGED. THIS WILL BE IMPORTANT SINCE IT
APPEARS FORCING ALONG THE DRYLINE COUPLED WITH INCREASING UPPER
SUPPORT SHOULD PROMOTE SCATTERED DEEP MOIST CONVECTION TO DEVELOP
ALONG THE DRYLINE BY MID TO LATE AFTERNOON. CURRENT NWP DOES SUGGEST
MOISTURE WILL MIX OUT A FAIR AMOUNT ON THE MOIST SIDE OF THE
DRYLINE...BUT STILL COULD HAVE AS MUCH AS 1500-2000 J/KG OF SBCAPE.
THIS INSTABILITY AND INITIALLY WEAK BUT IMPROVING DEEP LAYER SHEAR
WILL LIKELY SUPPORT SEVERE CONVECTION. WEST OF THE DRYLINE...GUSTY
SOUTHWESTERLY WINDS...TEMPERATURES WELL INTO THE 90S AND HUMIDITIES
BELOW 10 PERCENT WILL CREATE CRITICAL FIRE WEATHER.
THE LEAD SHORTWAVE TROUGH WILL SWING INTO THE CENTRAL PLAINS ON
SUNDAY AND THIS WILL DRAG THE DRYLINE EAST OF THE AREA WITH
GUSTY...WARM AND DRY WESTERLY WINDS AREA WIDE. SIMILAR WEATHER WILL
FOLLOW ON MONDAY AS ANOTHER SHORTWAVE DIVES UNDER A DEVELOPING
CLOSED LOW ACROSS THE DAKOTAS. A WEAK BUT LIKELY DRY COLD FRONT WILL
FOLLOW MONDAY NIGHT WITH MINOR COOLING INTO TUESDAY. SOUTHERLY
LOW-LEVEL FLOW WILL THEN DEVELOP MIDWEEK WITH MOISTURE LEVELS
GRADUALLY RISING AS A DRYLINE BEGINS TO TAKE SHAPE SOMEWHERE IN/NEAR
THE AREA. THIS DRYLINE COULD BE THE FOCUS FOR INCREASING CONVECTIVE
CHANCES AS EARLY AS NEXT WEDNESDAY AND THURSDAY...THOUGH HEIGHTS
WILL ALSO BE BUILDING ALOFT IN ADVANCE OF A LARGE SLOW MOVING UPPER
LOW CENTERED NEAR THE PACIFIC NORTHWEST. GIVEN UNCERTAINTY IN
MOISTURE RETURN...DRYLINE LOCATION AND UPPER SUPPORT...HAVE LEFT
POPS BELOW MENTIONABLE LEVELS AT THE FAR END OF THE
EXTENDED...THOUGH DID TREND POPS UPWARD WITH THE DRYLINE EXPECTED TO
BE SOMEWHERE IN THE VICINITY.
FIRE WEATHER...
ELEVATED TO CRITICAL FIRE WEATHER CONDITIONS WILL DEVELOP WEST OF
THE DRYLINE ACROSS THE CAPROCK SATURDAY AFTERNOON. THIS WILL OCCUR
AS SUSTAINED SOUTHWESTERLY WINDS INCREASE TO 15-25 MPH AT THE 20 FT
LEVEL...TEMPERATURES CLIMB WELL INTO THE 90S AND HUMIDITIES PLUNGE
BELOW 10 PERCENT /TO AS LOW AS 5 PERCENT/. HENCE...HAVE DECIDED TO
ISSUE A FIRE WEATHER WATCH FOR SPOTS ON THE CAPROCK SATURDAY
AFTERNOON AND EVENING. THE DRYLINE WILL PUSH FURTHER EAST ON SUNDAY
AND MONDAY WITH TOASTY...DRY AND BREEZY CONDITIONS SPREADING OVER
THE ENTIRE AREA. THIS WILL RESULT IN WIDESPREAD ELEVATED TO CRITICAL
FIRE WEATHER AREA WIDE BOTH SUNDAY AND MONDAY AFTERNOONS BEFORE A
WEAK COLD FRONT MOVES THROUGH MONDAY NIGHT.
&&
.PRELIMINARY POINT TEMPS/POPS...
FRIONA 55 98 58 94 53 / 0 0 10 10 0
TULIA 58 100 61 95 57 / 10 10 10 10 10
PLAINVIEW 59 100 59 96 58 / 10 10 10 10 10
LEVELLAND 60 99 63 96 59 / 10 0 10 10 0
LUBBOCK 61 100 64 97 59 / 10 0 10 10 10
DENVER CITY 57 98 65 95 59 / 0 0 10 10 0
BROWNFIELD 59 99 65 95 60 / 10 0 10 10 0
CHILDRESS 64 96 68 99 63 / 20 10 10 20 30
SPUR 64 101 65 97 63 / 20 10 10 20 20
ASPERMONT 68 103 70 99 67 / 10 10 10 20 30
&&
.LUB WATCHES/WARNINGS/ADVISORIES...
FIRE WEATHER WATCH FROM SATURDAY AFTERNOON THROUGH SATURDAY
EVENING FOR THE FOLLOWING ZONES:
TXZ021>024-027>030-033>036-039>042.
&&
$$
01
340
FXUS64 KLUB 162035
AFDLUB
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LUBBOCK TX
335 PM CDT THU MAY 16 2013
.SHORT TERM...
A WEAK UPPER LEVEL IMPULSE APPROACHING FORT SUMNER NEW MEXICO LATE
THIS AFTERNOON WILL CROSS THE EXTREME SOUTHERN TEXAS PANHANDLE AND
SOUTH PLAINS REGION EARLY THIS EVENING. SURFACE DRY-LINE HAS
DEVELOPED SLIGHTLY WEST OF EARLIER PROJECTIONS BUT HAS A DETERMINED
EASTERLY MOTION WITH DEEPLY MIXED DRY AND HOT AIRMASS TO THE WEST.
LATEST SHORT RANGE SOLUTIONS STILL SUGGEST SOME POTENTIAL FOR
ISOLATED HIGH-BASED THUNDERSTORMS TO DEVELOP INITIALLY JUST WEST OF
THE I-27 CORRIDOR BETWEEN 400 PM AND 500 PM...BEFORE EDGING OFF TO
THE EAST EARLY IN THE EVENING. CHANCES DIMINISH AFTER DARK WITH LOW
CHANCE OF STORMS SURVIVING AS FAR EAST AS CHILDRESS OR PADUCAH.
MIXED LAYER CAPES INDICATE ENERGY POTENTIAL NEAR 1500 JOULES PER
KILOGRAM OVER THE SOUTH-CENTRAL PANHANDLE AROUND 00Z SO WOULD
PRODUCE AN OUTSIDE RISK FOR A SEVERE WIND GUST OR EVEN LARGE HAIL
EVENT. IT SEEMS UNLIKELY THAT THESE STORMS WOULD TAP INTO THE HIGHER
CAPE AIRMASS LYING NEAR THE RED RIVER.
HEIGHTS ALOFT SHOULD BUILD ENOUGH TO SUPPRESS MENTIONABLE CHANCES FOR
THUNDER ON FRIDAY. BEST SUB-MENTIONABLE CHANCES MIGHT RUN FROM THE
EXTREME SOUTH-CENTRAL PANHANDLE INTO THE NORTHERN ROLLING PLAINS.
TEMPERATURES WILL ELEVATE TO THE WARMEST OF THE YEAR THUS FAR. MINOR
CHANGES FROM PREVIOUS FORECAST. RMCQUEEN
&&
.LONG TERM...
ONLY MINOR ADJUSTMENTS MADE TO THE ONGOING FORECAST. STILL EXPECT
MUCH ABOVE AVERAGE TEMPERATURES THOUGH WITH A GRADUAL MODERATING
TREND THROUGH TUESDAY. IN ADDITION...SEVERE STORMS WILL BE POSSIBLE
ALONG AND EAST OF A DRYLINE /ACROSS AT LEAST THE EASTERN ZONES/ LATE
SATURDAY WHILE ELEVATED TO CRITICAL FIRE WEATHER WILL DEVELOP WEST
OF THE DRYLINE.
AN UPPER LEVEL TROUGH CURRENTLY APPROACHING THE WESTERN CONUS WILL
ADVANCE STEADILY THROUGH THE WESTERN STATES WITH A LEAD NEGATIVELY
TILTED SHORTWAVE PROGGED TO EMERGE FROM THE SOUTHERN ROCKIES BY
LATE SATURDAY. IN ADVANCE OF THIS WAVE...A STOUT SOUTHERLY LLJ WILL
CARRY MOISTURE NORTHWARD INTO THE SOUTH PLAINS EARLY SATURDAY.
INITIALLY...THERE COULD EVEN BE A SMALL WINDOW FOR FOG ACROSS THE
NORTHEASTERN MOST ZONES WHERE A SFC BOUNDARY LINGERS WITH LIGHT BUT
MOIST EASTERLY UPSLOPE WINDS BEFORE BEING OVERTAKEN BY THE SOUTHERLY
LOW-LEVEL FLOW. PRESSURES WILL THEN FALL IN THE LEE OF THE ROCKIES
AND IN ADVANCE OF THE WAVE SATURDAY...WITH A TIGHTENING PRESSURE
GRADIENT RESULTING IN INCREASINGLY BREEZY WINDS THROUGH THE DAY. THE
LATEST GUIDANCE NOW SUGGESTS THE DRYLINE MAY MIX/ADVANCE A LITTLE
FURTHER EAST THAN EARLIER THOUGHT...WELL OFF THE CAPROCK...THOUGH
GIVEN THE SETUP WOULD NOT BE SURPRISED IF THE DRYLINE IS A LITTLE
FURTHER WEST THAT CURRENTLY PROGGED. THIS WILL BE IMPORTANT SINCE IT
APPEARS FORCING ALONG THE DRYLINE COUPLED WITH INCREASING UPPER
SUPPORT SHOULD PROMOTE SCATTERED DEEP MOIST CONVECTION TO DEVELOP
ALONG THE DRYLINE BY MID TO LATE AFTERNOON. CURRENT NWP DOES SUGGEST
MOISTURE WILL MIX OUT A FAIR AMOUNT ON THE MOIST SIDE OF THE
DRYLINE...BUT STILL COULD HAVE AS MUCH AS 1500-2000 J/KG OF SBCAPE.
THIS INSTABILITY AND INITIALLY WEAK BUT IMPROVING DEEP LAYER SHEAR
WILL LIKELY SUPPORT SEVERE CONVECTION. WEST OF THE DRYLINE...GUSTY
SOUTHWESTERLY WINDS...TEMPERATURES WELL INTO THE 90S AND HUMIDITIES
BELOW 10 PERCENT WILL CREATE CRITICAL FIRE WEATHER.
THE LEAD SHORTWAVE TROUGH WILL SWING INTO THE CENTRAL PLAINS ON
SUNDAY AND THIS WILL DRAG THE DRYLINE EAST OF THE AREA WITH
GUSTY...WARM AND DRY WESTERLY WINDS AREA WIDE. SIMILAR WEATHER WILL
FOLLOW ON MONDAY AS ANOTHER SHORTWAVE DIVES UNDER A DEVELOPING
CLOSED LOW ACROSS THE DAKOTAS. A WEAK BUT LIKELY DRY COLD FRONT WILL
FOLLOW MONDAY NIGHT WITH MINOR COOLING INTO TUESDAY. SOUTHERLY
LOW-LEVEL FLOW WILL THEN DEVELOP MIDWEEK WITH MOISTURE LEVELS
GRADUALLY RISING AS A DRYLINE BEGINS TO TAKE SHAPE SOMEWHERE IN/NEAR
THE AREA. THIS DRYLINE COULD BE THE FOCUS FOR INCREASING CONVECTIVE
CHANCES AS EARLY AS NEXT WEDNESDAY AND THURSDAY...THOUGH HEIGHTS
WILL ALSO BE BUILDING ALOFT IN ADVANCE OF A LARGE SLOW MOVING UPPER
LOW CENTERED NEAR THE PACIFIC NORTHWEST. GIVEN UNCERTAINTY IN
MOISTURE RETURN...DRYLINE LOCATION AND UPPER SUPPORT...HAVE LEFT
POPS BELOW MENTIONABLE LEVELS AT THE FAR END OF THE
EXTENDED...THOUGH DID TREND POPS UPWARD WITH THE DRYLINE EXPECTED TO
BE SOMEWHERE IN THE VICINITY.
&&
.FIRE WEATHER...
ELEVATED TO CRITICAL FIRE WEATHER CONDITIONS WILL DEVELOP WEST OF
THE DRYLINE ACROSS THE CAPROCK SATURDAY AFTERNOON. THIS WILL OCCUR
AS SUSTAINED SOUTHWESTERLY WINDS INCREASE TO 15-25 MPH AT THE 20 FT
LEVEL...TEMPERATURES CLIMB WELL INTO THE 90S AND HUMIDITIES PLUNGE
BELOW 10 PERCENT /TO AS LOW AS 5 PERCENT/. HENCE...HAVE DECIDED TO
ISSUE A FIRE WEATHER WATCH FOR SPOTS ON THE CAPROCK SATURDAY
AFTERNOON AND EVENING. THE DRYLINE WILL PUSH FURTHER EAST ON SUNDAY
AND MONDAY WITH TOASTY...DRY AND BREEZY CONDITIONS SPREADING OVER
THE ENTIRE AREA. THIS WILL RESULT IN WIDESPREAD ELEVATED TO CRITICAL
FIRE WEATHER AREA WIDE BOTH SUNDAY AND MONDAY AFTERNOONS BEFORE A
WEAK COLD FRONT MOVES THROUGH MONDAY NIGHT.
&&
.PRELIMINARY POINT TEMPS/POPS...
FRIONA 55 98 58 94 53 / 0 0 10 10 0
TULIA 58 100 61 95 57 / 10 10 10 10 10
PLAINVIEW 59 100 59 96 58 / 10 10 10 10 10
LEVELLAND 60 99 63 96 59 / 10 0 10 10 0
LUBBOCK 61 100 64 97 59 / 10 0 10 10 10
DENVER CITY 57 98 65 95 59 / 0 0 10 10 0
BROWNFIELD 59 99 65 95 60 / 10 0 10 10 0
CHILDRESS 64 96 68 99 63 / 20 10 10 20 30
SPUR 64 101 65 97 63 / 20 10 10 20 20
ASPERMONT 68 103 70 99 67 / 10 10 10 20 30
&&
.LUB WATCHES/WARNINGS/ADVISORIES...
FIRE WEATHER WATCH FROM SATURDAY AFTERNOON THROUGH SATURDAY
EVENING FOR THE FOLLOWING ZONES:
TXZ021>024-027>030-033>036-039>042.
&&
$$
05/23
103
FXUS64 KLUB 161729
AFDLUB
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LUBBOCK TX
1229 PM CDT THU MAY 16 2013
.AVIATION...
SURFACE DRY-LINE LOCATED NEAR OR JUST EAST OF KLBB WILL BE A
POSSIBLE LOCATION FOR HIGH-BASED THUNDERSTORMS TO DEVELOP LATER
THIS AFTERNOON AND EARLY EVENING...MAINLY NORTH OF KLBB. AN UPPER
LEVEL CAP WITH BUILDING HEIGHTS ALOFT WILL BE AT ODDS WITH A WEAK
UPPER DISTURBANCE EDGING EAST OUT OF NEW MEXICO. SLIM POSSIBILITY
EXISTS FOR STRONG OUTFLOW GUSTS SHOULD THESE STORMS DEVELOP NEAR
KLBB. ANY THUNDERSTORMS UNLIKELY TO PERSIST AS FAR EAST AS KCDS
ALTHOUGH DISTURBANCE WILL MOVE ACROSS THE EASTERN PANHANDLE AND
NORTHERN ROLLING PLAINS AROUND 06Z TONIGHT. LOW LEVEL EAST TO
SOUTHEAST FLOW WILL REMAIN MOIST WITH AN IFR CLOUD LAYER LIKELY
TO SPREAD INTO KCDS AND THEN KLBB OVERNIGHT. VISIBILITY MAY ALSO
DROP TO MVFR OR POSSIBLY IFR LEVELS AT KLBB AGAIN NEAR DAYBREAK. RMCQUEEN
&&
.PREV DISCUSSION... /ISSUED 858 AM CDT THU MAY 16 2013/
AVIATION...
FOG AND STRATUS CLEARING RAPIDLY AT KLBB. QUICK TAF AMENDMENT TO
CLEAR OUT TEMPO GROUP AND ALSO TO ADJUST FOR A LIGHT NORTHERLY
BREEZE THROUGH THE MORNING. REMAINDER OF FORECAST UNCHANGED. RMCQUEEN
PREV DISCUSSION... /ISSUED 621 AM CDT THU MAY 16 2013/
AVIATION...
STRATUS HAS WORKED INTO BOTH TERMINALS THIS MORNING WITH
VISIBILITIES LESS THAN ONE MILE AT KLBB THOUGH THE CITY REMAINS
CAVU AS OF THIS WRITING...THUS...THE FIELD IS RIGHT ON THE EDGE.
THESE REDUCTIONS ARE BEHIND A SLOWLY MOVING COLD FRONT WHICH
SHOULD WASH OUT WITH CLOUDS SCATTERING OUT BY LATE MORNING.
THEREAFTER...PRIMARY AVIATION CONCERN TURNS TO POTENTIAL FOR
THUNDERSTORM DEVELOPMENT PARTICULARLY AT KLBB. CONFIDENCE IN
STORMS AFFECTING THE AIRPORT ONLY ABOUT 10-20 PCT AT THIS TIME
THUS PRECLUDING MENTION IN THE TAF. WITH THE HIGH CLOUD BASES
EXPECTED THIS AFTERNOON...DOWNBURST WINDS WILL BE QUITE LIKELY
UNDER ANYTHING THAT PRECIPITATES.
PREV DISCUSSION... /ISSUED 421 AM CDT THU MAY 16 2013/
SHORT TERM...
WHILE MODEST RIDGING IS IN PLACE EARLY THIS MORNING BEHIND THE UPPER
LOW OVER EASTERN OKLAHOMA WHICH WREAKED HAVOC NEAR THE DFW
METROPLEX...SMALL SCALE TROUGH AXIS IS SITUATED ALONG THE SPINE OF
THE ROCKIES FROM COLORADO OUT TO EL PASO. IN COMPARING RAOBS WITH
00Z INITIALIZATION...NWP SEEMS TO HAVE ANALYZED THIS FEATURE JUST A
BIT FASTER THAN WHAT THE OBS SUGGEST IS CLOSER TO REALITY. GIVEN AN
HOUR OR TWO SLOWER...THIS WILL PLACE THE TROUGH AXIS FROM CENTRAL
NEBRASKA INTO THE PANHANDLE THENCE OUT TOWARD THE BIG BEND LATE
THIS AFTERNOON. Q-VECTOR ANALYSIS IN ALL THREE MAJOR NWP SOLUTIONS
INDICATE SOME WEAK UPWARD LIFT THIS AFTERNOON ACROSS OUR CWA.
AT THE SURFACE...A WEAK FRONTAL BOUNDARY HAS BEEN SAGGING
SOUTHWESTWARD ACROSS THE CWFA. AT 2AM THIS BDRY WAS LOCATED ALONG A
LINE FROM MULESHOE TO LUBBOCK TO JAYTON. THIS PLUS THE RETREATING
DRYLINE TO OUR SOUTH SHOULD END UP NEAR THE TX/NM STATE LINE BY
SUNRISE AND MIX EASTWARD ONCE AGAIN TODAY...BUT LIKELY NOT NEARLY AS
FAR AS YESTERDAY...PERHAPS ENDING UP ALONG OR JUST EAST OF THE I-27
CORRIDOR. WESTERN EXTENT OF THETA-E RIDGE SHOULD BE ACROSS THE
CENTRAL ZONES WHERE MUCAPE OF 2-2.5 KJ/KG WILL EXIST. IT WOULD
APPEAR THAT THE CONDITIONS FAVORABLE FOR CONVECTION MAY BE QUITE
NARROW AS THE ATMOSPHERE APPEARS TO BE CAPPED THIS AFTERNOON ACROSS
THE EASTERN ROLLING PLAINS. SHEAR WILL BE INITIALLY QUITE ANEMIC
WITH 0-6KM BULK VALUES LESS THAN 25 KTS THOUGH SHEAR IS EXPECTED
TO INCREASE LATE THIS AFTERNOON AS THE DRYLINE BEGINS TO RETREAT.
GIVEN ANGLE BETWEEN MID LEVEL FLOW AND SURFACE BOUNDARY...DISCRETE
STORMS WILL BE FAVORED. THE THREAT IS CONDITIONAL ON CONVECTIVE
INITIATION BUT ANY STORMS WHICH DO FORM WILL CERTAINLY HAVE THE
OPPORTUNITY TO PRODUCE SEVERE WEATHER. AFTER ALL...IT IS MAY IN
WEST TEXAS. FARTHER WEST...SOME VIRGA SHOWERS WITH GUSTY WINDS
WILL BE POSSIBLE. ACTIVITY SHOULD DIMINISH QUICKLY AROUND SUNSET.
OUT WEST...THIS AFTERNOON...NEAR CRITICAL FIRE WEATHER CONDITIONS
WILL EXIST AGAIN.
LONG TERM...
WE WILL START THE EXTENDED PERIOD WITH TEMPS WARMING INTO THE UPPER
90S TO TRIPLE DIGIT READINGS TOMORROW...THANKS TO AN EASTWARD
TRANSLATING UA RIDGE AND 850 MB TEMPS AOA 30 DEGREES. THE TEMP AT
KLBB IS FORECAST TO BE 99 DEGREES WHICH IS ONLY 2 DEGREES SHY OF THE
RECORD SET IN 1996 /COULD BE A CLOSE CALL/. CONCURRENTLY A BROAD UA
TROUGH WILL BE DIGGING ESE TOWARDS THE FOUR-CORNERS REGION...WHICH
WILL VEER FLOW ALOFT TO THE SW. AS SUCH...SFC WINDS ON THE CAPROCK
WILL ALSO VEER TO THE SW WHICH WILL SHIFT THE DRYLINE TO NEAR THE
SERN TEXAS PANHANDLE. NO PRECIP IS ANTICIPATED TO DEVELOP ALONG THE
DRYLINE TOMORROW GIVEN A STRONG CAP...BUT THIS APPEARS TO NOT BE THE
CASE FOR SATURDAY. AS THE AFOREMENTIONED UA DISTURBANCE TREKS
ACROSS THE SOUTHERN ROCKIES THUS NEARING THE SOUTHERN PLAINS ON
SATURDAY...LOWERING HEIGHTS WILL COOL TEMPS OFF JUST A BIT /LOWER TO
UPPER 90S/ BUT WILL ALSO PROMOTE A DEEPENING SFC LOW NW OF THE
REGION LEADING TO BREEZY S TO SW WINDS /20-25 MPH/ AND AS SUCH THE
DRYLINE SETTING UP ACROSS THE ROLLING PLAINS BY THE AFTN. ELEVATED
TO CRITICAL FIRE WEATHER CONDITIONS WILL EXIST WEST OF THE
DRYLINE...DUE TO ABOVE NORM TEMPS...RHS 5-15 PERCENT AND BREEZY
CONDITIONS. ADDITIONAL FIRE WEATHER HIGHLIGHTS MAY BE WARRANTED. SFC
CONVERGENCE ALONG THE DRYLINE SATURDAY IS IMPROVED GIVEN THE
EXPECTED BREEZY CONDITIONS...AND THE CAP APPEARS WEAKER THAN THE
PREVIOUS DAY DUE TO AN EXITING UA RIDGE AND HENCE SUBSIDENCE BEING
LESS INFLUENTIAL. MODEL RUNS GENERALLY BREAK OUT STORMS LATE IN THE
AFTN/EARLY EVENING /AFTER 18Z/ COINCIDING WITH A WEAKENING CAP.
SFC-BASED CAPE OF 1.0-3.0 KJ/KG COMBINED WITH 25-35 KTS OF 0-6 KM
BULK SHEAR AND STEEPENING LAPSE RATES SUGGEST ELEVATED STORMS
REACHING STRONG TO SEVERE LEVELS. HAVE BUMPED POPS UP TO CHANCE
CATEGORY ACROSS THE ROLLING PLAINS DURING THE EVENING HOURS...AS
THIS QPF SIGNAL HAS BEEN CONSISTENTLY SHOWN FOR THE LAST SEVERAL
MODEL RUNS.
AS THE LEAD SHORTWAVE OF THE BROAD UA DISTURBANCE EJECTS NE ACROSS
THE PANHANDLES/SOUTHERN PLAINS LATE SATURDAY NIGHT/EARLY SUNDAY
MORNING...ITS ASSOCIATED PACIFIC FRONT WILL PROMOTE BREEZY WESTERLY
WINDS TO FILTER ACROSS THE CWA...AND THEREFORE SHIFTING THE DRYLINE
TO THE EASTERN FRINGES OF THE CWA SUNDAY AFTN/EVENING. THE PACIFIC
FRONT WILL NOT COOL US DOWN MUCH /80S AND 90S/ BUT WILL AID IN
ENCOURAGING ANOTHER ELEVATED FIRE WEATHER DAY DUE TO DRY AND BREEZY
CONDITIONS. SLIGHTLY BREEZY WRLY WINDS WILL ENSUE ON MONDAY...MAKING
FOR ANOTHER RELATIVELY WARM DAY /80S AND 90S/. THE MEAN TROUGH WILL
BE TRAVERSING THE CENTRAL PLAINS MONDAY NIGHT...AND WILL SEND
DOWN ITS ASSOCIATED FROPA THROUGH THE ENTIRE CWA BY EARLY TUESDAY
MORNING /PER THE ECMWF/ OR HANGING UP ACROSS THE SERN TEXAS
PANHANDLE WHERE IT WASHES OUT /PER THE GFS/. THUS...TEMPS WILL
EITHER BY RELATIVELY WARM OR SLIGHTLY COOLER IF FOLLOWING THE GFS
AND ECMWF RESPECTIVELY. HAVE LEANED TOWARDS THE ECMWF ATTM /HIGHS IN
THE 80S WITH A FEW 90S/ AS THE QUASI-STATIONARY FRONT SCENARIO IS A
NEW DEVELOPMENT WITH THIS CURRENT GFS RUN...VERSUS THE MORE
PERSISTENT ECMWF. UA RIDGING WILL RETURN FOR MID TO LATE WEEK AND
WARMTH WILL RESUME.
&&
.PRELIMINARY POINT TEMPS/POPS...
FRIONA 92 58 96 60 93 / 10 10 0 10 0
TULIA 91 60 98 62 94 / 20 20 0 10 10
PLAINVIEW 93 61 98 64 95 / 20 20 0 10 10
LEVELLAND 95 60 98 64 95 / 10 10 0 10 0
LUBBOCK 95 62 100 67 96 / 20 20 0 10 10
DENVER CITY 96 58 96 64 94 / 10 10 0 10 0
BROWNFIELD 98 60 98 64 94 / 10 10 0 10 0
CHILDRESS 91 63 96 67 98 / 10 10 10 10 20
SPUR 94 66 100 65 96 / 20 20 10 10 20
ASPERMONT 95 69 102 68 98 / 10 10 10 10 20
&&
.LUB WATCHES/WARNINGS/ADVISORIES...
NONE.
&&
$$
99/99/05
127
FXUS64 KLUB 161358
AFDLUB
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LUBBOCK TX
858 AM CDT THU MAY 16 2013
.AVIATION...
FOG AND STRATUS CLEARING RAPIDLY AT KLBB. QUICK TAF AMENDMENT TO
CLEAR OUT TEMPO GROUP AND ALSO TO ADJUST FOR A LIGHT NORTHERLY
BREEZE THROUGH THE MORNING. REMAINDER OF FORECAST UNCHANGED. RMCQUEEN
&&
.PREV DISCUSSION... /ISSUED 621 AM CDT THU MAY 16 2013/
AVIATION...
STRATUS HAS WORKED INTO BOTH TERMINALS THIS MORNING WITH
VISIBILITIES LESS THAN ONE MILE AT KLBB THOUGH THE CITY REMAINS
CAVU AS OF THIS WRITING...THUS...THE FIELD IS RIGHT ON THE EDGE.
THESE REDUCTIONS ARE BEHIND A SLOWLY MOVING COLD FRONT WHICH
SHOULD WASH OUT WITH CLOUDS SCATTERING OUT BY LATE MORNING.
THEREAFTER...PRIMARY AVIATION CONCERN TURNS TO POTENTIAL FOR
THUNDERSTORM DEVELOPMENT PARTICULARLY AT KLBB. CONFIDENCE IN
STORMS AFFECTING THE AIRPORT ONLY ABOUT 10-20 PCT AT THIS TIME
THUS PRECLUDING MENTION IN THE TAF. WITH THE HIGH CLOUD BASES
EXPECTED THIS AFTERNOON...DOWNBURST WINDS WILL BE QUITE LIKELY
UNDER ANYTHING THAT PRECIPITATES.
PREV DISCUSSION... /ISSUED 421 AM CDT THU MAY 16 2013/
SHORT TERM...
WHILE MODEST RIDGING IS IN PLACE EARLY THIS MORNING BEHIND THE UPPER
LOW OVER EASTERN OKLAHOMA WHICH WREAKED HAVOC NEAR THE DFW
METROPLEX...SMALL SCALE TROUGH AXIS IS SITUATED ALONG THE SPINE OF
THE ROCKIES FROM COLORADO OUT TO EL PASO. IN COMPARING RAOBS WITH
00Z INITIALIZATION...NWP SEEMS TO HAVE ANALYZED THIS FEATURE JUST A
BIT FASTER THAN WHAT THE OBS SUGGEST IS CLOSER TO REALITY. GIVEN AN
HOUR OR TWO SLOWER...THIS WILL PLACE THE TROUGH AXIS FROM CENTRAL
NEBRASKA INTO THE PANHANDLE THENCE OUT TOWARD THE BIG BEND LATE
THIS AFTERNOON. Q-VECTOR ANALYSIS IN ALL THREE MAJOR NWP SOLUTIONS
INDICATE SOME WEAK UPWARD LIFT THIS AFTERNOON ACROSS OUR CWA.
AT THE SURFACE...A WEAK FRONTAL BOUNDARY HAS BEEN SAGGING
SOUTHWESTWARD ACROSS THE CWFA. AT 2AM THIS BDRY WAS LOCATED ALONG A
LINE FROM MULESHOE TO LUBBOCK TO JAYTON. THIS PLUS THE RETREATING
DRYLINE TO OUR SOUTH SHOULD END UP NEAR THE TX/NM STATE LINE BY
SUNRISE AND MIX EASTWARD ONCE AGAIN TODAY...BUT LIKELY NOT NEARLY AS
FAR AS YESTERDAY...PERHAPS ENDING UP ALONG OR JUST EAST OF THE I-27
CORRIDOR. WESTERN EXTENT OF THETA-E RIDGE SHOULD BE ACROSS THE
CENTRAL ZONES WHERE MUCAPE OF 2-2.5 KJ/KG WILL EXIST. IT WOULD
APPEAR THAT THE CONDITIONS FAVORABLE FOR CONVECTION MAY BE QUITE
NARROW AS THE ATMOSPHERE APPEARS TO BE CAPPED THIS AFTERNOON ACROSS
THE EASTERN ROLLING PLAINS. SHEAR WILL BE INITIALLY QUITE ANEMIC
WITH 0-6KM BULK VALUES LESS THAN 25 KTS THOUGH SHEAR IS EXPECTED
TO INCREASE LATE THIS AFTERNOON AS THE DRYLINE BEGINS TO RETREAT.
GIVEN ANGLE BETWEEN MID LEVEL FLOW AND SURFACE BOUNDARY...DISCRETE
STORMS WILL BE FAVORED. THE THREAT IS CONDITIONAL ON CONVECTIVE
INITIATION BUT ANY STORMS WHICH DO FORM WILL CERTAINLY HAVE THE
OPPORTUNITY TO PRODUCE SEVERE WEATHER. AFTER ALL...IT IS MAY IN
WEST TEXAS. FARTHER WEST...SOME VIRGA SHOWERS WITH GUSTY WINDS
WILL BE POSSIBLE. ACTIVITY SHOULD DIMINISH QUICKLY AROUND SUNSET.
OUT WEST...THIS AFTERNOON...NEAR CRITICAL FIRE WEATHER CONDITIONS
WILL EXIST AGAIN.
LONG TERM...
WE WILL START THE EXTENDED PERIOD WITH TEMPS WARMING INTO THE UPPER
90S TO TRIPLE DIGIT READINGS TOMORROW...THANKS TO AN EASTWARD
TRANSLATING UA RIDGE AND 850 MB TEMPS AOA 30 DEGREES. THE TEMP AT
KLBB IS FORECAST TO BE 99 DEGREES WHICH IS ONLY 2 DEGREES SHY OF THE
RECORD SET IN 1996 /COULD BE A CLOSE CALL/. CONCURRENTLY A BROAD UA
TROUGH WILL BE DIGGING ESE TOWARDS THE FOUR-CORNERS REGION...WHICH
WILL VEER FLOW ALOFT TO THE SW. AS SUCH...SFC WINDS ON THE CAPROCK
WILL ALSO VEER TO THE SW WHICH WILL SHIFT THE DRYLINE TO NEAR THE
SERN TEXAS PANHANDLE. NO PRECIP IS ANTICIPATED TO DEVELOP ALONG THE
DRYLINE TOMORROW GIVEN A STRONG CAP...BUT THIS APPEARS TO NOT BE THE
CASE FOR SATURDAY. AS THE AFOREMENTIONED UA DISTURBANCE TREKS
ACROSS THE SOUTHERN ROCKIES THUS NEARING THE SOUTHERN PLAINS ON
SATURDAY...LOWERING HEIGHTS WILL COOL TEMPS OFF JUST A BIT /LOWER TO
UPPER 90S/ BUT WILL ALSO PROMOTE A DEEPENING SFC LOW NW OF THE
REGION LEADING TO BREEZY S TO SW WINDS /20-25 MPH/ AND AS SUCH THE
DRYLINE SETTING UP ACROSS THE ROLLING PLAINS BY THE AFTN. ELEVATED
TO CRITICAL FIRE WEATHER CONDITIONS WILL EXIST WEST OF THE
DRYLINE...DUE TO ABOVE NORM TEMPS...RHS 5-15 PERCENT AND BREEZY
CONDITIONS. ADDITIONAL FIRE WEATHER HIGHLIGHTS MAY BE WARRANTED. SFC
CONVERGENCE ALONG THE DRYLINE SATURDAY IS IMPROVED GIVEN THE
EXPECTED BREEZY CONDITIONS...AND THE CAP APPEARS WEAKER THAN THE
PREVIOUS DAY DUE TO AN EXITING UA RIDGE AND HENCE SUBSIDENCE BEING
LESS INFLUENTIAL. MODEL RUNS GENERALLY BREAK OUT STORMS LATE IN THE
AFTN/EARLY EVENING /AFTER 18Z/ COINCIDING WITH A WEAKENING CAP.
SFC-BASED CAPE OF 1.0-3.0 KJ/KG COMBINED WITH 25-35 KTS OF 0-6 KM
BULK SHEAR AND STEEPENING LAPSE RATES SUGGEST ELEVATED STORMS
REACHING STRONG TO SEVERE LEVELS. HAVE BUMPED POPS UP TO CHANCE
CATEGORY ACROSS THE ROLLING PLAINS DURING THE EVENING HOURS...AS
THIS QPF SIGNAL HAS BEEN CONSISTENTLY SHOWN FOR THE LAST SEVERAL
MODEL RUNS.
AS THE LEAD SHORTWAVE OF THE BROAD UA DISTURBANCE EJECTS NE ACROSS
THE PANHANDLES/SOUTHERN PLAINS LATE SATURDAY NIGHT/EARLY SUNDAY
MORNING...ITS ASSOCIATED PACIFIC FRONT WILL PROMOTE BREEZY WESTERLY
WINDS TO FILTER ACROSS THE CWA...AND THEREFORE SHIFTING THE DRYLINE
TO THE EASTERN FRINGES OF THE CWA SUNDAY AFTN/EVENING. THE PACIFIC
FRONT WILL NOT COOL US DOWN MUCH /80S AND 90S/ BUT WILL AID IN
ENCOURAGING ANOTHER ELEVATED FIRE WEATHER DAY DUE TO DRY AND BREEZY
CONDITIONS. SLIGHTLY BREEZY WRLY WINDS WILL ENSUE ON MONDAY...MAKING
FOR ANOTHER RELATIVELY WARM DAY /80S AND 90S/. THE MEAN TROUGH WILL
BE TRAVERSING THE CENTRAL PLAINS MONDAY NIGHT...AND WILL SEND
DOWN ITS ASSOCIATED FROPA THROUGH THE ENTIRE CWA BY EARLY TUESDAY
MORNING /PER THE ECMWF/ OR HANGING UP ACROSS THE SERN TEXAS
PANHANDLE WHERE IT WASHES OUT /PER THE GFS/. THUS...TEMPS WILL
EITHER BY RELATIVELY WARM OR SLIGHTLY COOLER IF FOLLOWING THE GFS
AND ECMWF RESPECTIVELY. HAVE LEANED TOWARDS THE ECMWF ATTM /HIGHS IN
THE 80S WITH A FEW 90S/ AS THE QUASI-STATIONARY FRONT SCENARIO IS A
NEW DEVELOPMENT WITH THIS CURRENT GFS RUN...VERSUS THE MORE
PERSISTENT ECMWF. UA RIDGING WILL RETURN FOR MID TO LATE WEEK AND
WARMTH WILL RESUME.
&&
.PRELIMINARY POINT TEMPS/POPS...
FRIONA 92 58 96 60 93 / 10 10 0 10 0
TULIA 91 60 98 62 94 / 20 20 0 10 10
PLAINVIEW 93 61 98 64 95 / 20 20 0 10 10
LEVELLAND 95 60 98 64 95 / 10 10 0 10 0
LUBBOCK 95 62 100 67 96 / 20 20 0 10 10
DENVER CITY 96 58 96 64 94 / 10 10 0 10 0
BROWNFIELD 98 60 98 64 94 / 10 10 0 10 0
CHILDRESS 91 63 96 67 98 / 10 10 10 10 20
SPUR 94 66 100 65 96 / 20 20 10 10 20
ASPERMONT 95 69 102 68 98 / 10 10 10 10 20
&&
.LUB WATCHES/WARNINGS/ADVISORIES...
DENSE FOG ADVISORY UNTIL 9 AM CDT THIS MORNING FOR THE FOLLOWING
ZONES: TXZ023-024-029-030-035-036.
&&
$$
99/99/05
762
FXUS64 KLUB 161121
AFDLUB
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LUBBOCK TX
621 AM CDT THU MAY 16 2013
.AVIATION...
STRATUS HAS WORKED INTO BOTH TERMINALS THIS MORNING WITH
VISIBILITIES LESS THAN ONE MILE AT KLBB THOUGH THE CITY REMAINS
CAVU AS OF THIS WRITING...THUS...THE FIELD IS RIGHT ON THE EDGE.
THESE REDUCTIONS ARE BEHIND A SLOWLY MOVING COLD FRONT WHICH
SHOULD WASH OUT WITH CLOUDS SCATTERING OUT BY LATE MORNING.
THEREAFTER...PRIMARY AVIATION CONCERN TURNS TO POTENTIAL FOR
THUNDERSTORM DEVELOPMENT PARTICULARLY AT KLBB. CONFIDENCE IN
STORMS AFFECTING THE AIRPORT ONLY ABOUT 10-20 PCT AT THIS TIME
THUS PRECLUDING MENTION IN THE TAF. WITH THE HIGH CLOUD BASES
EXPECTED THIS AFTERNOON...DOWNBURST WINDS WILL BE QUITE LIKELY
UNDER ANYTHING THAT PRECIPITATES.
&&
.PREV DISCUSSION... /ISSUED 421 AM CDT THU MAY 16 2013/
SHORT TERM...
WHILE MODEST RIDGING IS IN PLACE EARLY THIS MORNING BEHIND THE UPPER
LOW OVER EASTERN OKLAHOMA WHICH WREAKED HAVOC NEAR THE DFW
METROPLEX...SMALL SCALE TROUGH AXIS IS SITUATED ALONG THE SPINE OF
THE ROCKIES FROM COLORADO OUT TO EL PASO. IN COMPARING RAOBS WITH
00Z INITIALIZATION...NWP SEEMS TO HAVE ANALYZED THIS FEATURE JUST A
BIT FASTER THAN WHAT THE OBS SUGGEST IS CLOSER TO REALITY. GIVEN AN
HOUR OR TWO SLOWER...THIS WILL PLACE THE TROUGH AXIS FROM CENTRAL
NEBRASKA INTO THE PANHANDLE THENCE OUT TOWARD THE BIG BEND LATE
THIS AFTERNOON. Q-VECTOR ANALYSIS IN ALL THREE MAJOR NWP SOLUTIONS
INDICATE SOME WEAK UPWARD LIFT THIS AFTERNOON ACROSS OUR CWA.
AT THE SURFACE...A WEAK FRONTAL BOUNDARY HAS BEEN SAGGING
SOUTHWESTWARD ACROSS THE CWFA. AT 2AM THIS BDRY WAS LOCATED ALONG A
LINE FROM MULESHOE TO LUBBOCK TO JAYTON. THIS PLUS THE RETREATING
DRYLINE TO OUR SOUTH SHOULD END UP NEAR THE TX/NM STATE LINE BY
SUNRISE AND MIX EASTWARD ONCE AGAIN TODAY...BUT LIKELY NOT NEARLY AS
FAR AS YESTERDAY...PERHAPS ENDING UP ALONG OR JUST EAST OF THE I-27
CORRIDOR. WESTERN EXTENT OF THETA-E RIDGE SHOULD BE ACROSS THE
CENTRAL ZONES WHERE MUCAPE OF 2-2.5 KJ/KG WILL EXIST. IT WOULD
APPEAR THAT THE CONDITIONS FAVORABLE FOR CONVECTION MAY BE QUITE
NARROW AS THE ATMOSPHERE APPEARS TO BE CAPPED THIS AFTERNOON ACROSS
THE EASTERN ROLLING PLAINS. SHEAR WILL BE INITIALLY QUITE ANEMIC
WITH 0-6KM BULK VALUES LESS THAN 25 KTS THOUGH SHEAR IS EXPECTED
TO INCREASE LATE THIS AFTERNOON AS THE DRYLINE BEGINS TO RETREAT.
GIVEN ANGLE BETWEEN MID LEVEL FLOW AND SURFACE BOUNDARY...DISCRETE
STORMS WILL BE FAVORED. THE THREAT IS CONDITIONAL ON CONVECTIVE
INITIATION BUT ANY STORMS WHICH DO FORM WILL CERTAINLY HAVE THE
OPPORTUNITY TO PRODUCE SEVERE WEATHER. AFTER ALL...IT IS MAY IN
WEST TEXAS. FARTHER WEST...SOME VIRGA SHOWERS WITH GUSTY WINDS
WILL BE POSSIBLE. ACTIVITY SHOULD DIMINISH QUICKLY AROUND SUNSET.
OUT WEST...THIS AFTERNOON...NEAR CRITICAL FIRE WEATHER CONDITIONS
WILL EXIST AGAIN.
LONG TERM...
WE WILL START THE EXTENDED PERIOD WITH TEMPS WARMING INTO THE UPPER
90S TO TRIPLE DIGIT READINGS TOMORROW...THANKS TO AN EASTWARD
TRANSLATING UA RIDGE AND 850 MB TEMPS AOA 30 DEGREES. THE TEMP AT
KLBB IS FORECAST TO BE 99 DEGREES WHICH IS ONLY 2 DEGREES SHY OF THE
RECORD SET IN 1996 /COULD BE A CLOSE CALL/. CONCURRENTLY A BROAD UA
TROUGH WILL BE DIGGING ESE TOWARDS THE FOUR-CORNERS REGION...WHICH
WILL VEER FLOW ALOFT TO THE SW. AS SUCH...SFC WINDS ON THE CAPROCK
WILL ALSO VEER TO THE SW WHICH WILL SHIFT THE DRYLINE TO NEAR THE
SERN TEXAS PANHANDLE. NO PRECIP IS ANTICIPATED TO DEVELOP ALONG THE
DRYLINE TOMORROW GIVEN A STRONG CAP...BUT THIS APPEARS TO NOT BE THE
CASE FOR SATURDAY. AS THE AFOREMENTIONED UA DISTURBANCE TREKS
ACROSS THE SOUTHERN ROCKIES THUS NEARING THE SOUTHERN PLAINS ON
SATURDAY...LOWERING HEIGHTS WILL COOL TEMPS OFF JUST A BIT /LOWER TO
UPPER 90S/ BUT WILL ALSO PROMOTE A DEEPENING SFC LOW NW OF THE
REGION LEADING TO BREEZY S TO SW WINDS /20-25 MPH/ AND AS SUCH THE
DRYLINE SETTING UP ACROSS THE ROLLING PLAINS BY THE AFTN. ELEVATED
TO CRITICAL FIRE WEATHER CONDITIONS WILL EXIST WEST OF THE
DRYLINE...DUE TO ABOVE NORM TEMPS...RHS 5-15 PERCENT AND BREEZY
CONDITIONS. ADDITIONAL FIRE WEATHER HIGHLIGHTS MAY BE WARRANTED. SFC
CONVERGENCE ALONG THE DRYLINE SATURDAY IS IMPROVED GIVEN THE
EXPECTED BREEZY CONDITIONS...AND THE CAP APPEARS WEAKER THAN THE
PREVIOUS DAY DUE TO AN EXITING UA RIDGE AND HENCE SUBSIDENCE BEING
LESS INFLUENTIAL. MODEL RUNS GENERALLY BREAK OUT STORMS LATE IN THE
AFTN/EARLY EVENING /AFTER 18Z/ COINCIDING WITH A WEAKENING CAP.
SFC-BASED CAPE OF 1.0-3.0 KJ/KG COMBINED WITH 25-35 KTS OF 0-6 KM
BULK SHEAR AND STEEPENING LAPSE RATES SUGGEST ELEVATED STORMS
REACHING STRONG TO SEVERE LEVELS. HAVE BUMPED POPS UP TO CHANCE
CATEGORY ACROSS THE ROLLING PLAINS DURING THE EVENING HOURS...AS
THIS QPF SIGNAL HAS BEEN CONSISTENTLY SHOWN FOR THE LAST SEVERAL
MODEL RUNS.
AS THE LEAD SHORTWAVE OF THE BROAD UA DISTURBANCE EJECTS NE ACROSS
THE PANHANDLES/SOUTHERN PLAINS LATE SATURDAY NIGHT/EARLY SUNDAY
MORNING...ITS ASSOCIATED PACIFIC FRONT WILL PROMOTE BREEZY WESTERLY
WINDS TO FILTER ACROSS THE CWA...AND THEREFORE SHIFTING THE DRYLINE
TO THE EASTERN FRINGES OF THE CWA SUNDAY AFTN/EVENING. THE PACIFIC
FRONT WILL NOT COOL US DOWN MUCH /80S AND 90S/ BUT WILL AID IN
ENCOURAGING ANOTHER ELEVATED FIRE WEATHER DAY DUE TO DRY AND BREEZY
CONDITIONS. SLIGHTLY BREEZY WRLY WINDS WILL ENSUE ON MONDAY...MAKING
FOR ANOTHER RELATIVELY WARM DAY /80S AND 90S/. THE MEAN TROUGH WILL
BE TRAVERSING THE CENTRAL PLAINS MONDAY NIGHT...AND WILL SEND
DOWN ITS ASSOCIATED FROPA THROUGH THE ENTIRE CWA BY EARLY TUESDAY
MORNING /PER THE ECMWF/ OR HANGING UP ACROSS THE SERN TEXAS
PANHANDLE WHERE IT WASHES OUT /PER THE GFS/. THUS...TEMPS WILL
EITHER BY RELATIVELY WARM OR SLIGHTLY COOLER IF FOLLOWING THE GFS
AND ECMWF RESPECTIVELY. HAVE LEANED TOWARDS THE ECMWF ATTM /HIGHS IN
THE 80S WITH A FEW 90S/ AS THE QUASI-STATIONARY FRONT SCENARIO IS A
NEW DEVELOPMENT WITH THIS CURRENT GFS RUN...VERSUS THE MORE
PERSISTENT ECMWF. UA RIDGING WILL RETURN FOR MID TO LATE WEEK AND
WARMTH WILL RESUME.
&&
.PRELIMINARY POINT TEMPS/POPS...
FRIONA 92 58 96 60 93 / 10 10 0 10 0
TULIA 91 60 98 62 94 / 20 20 0 10 10
PLAINVIEW 93 61 98 64 95 / 20 20 0 10 10
LEVELLAND 95 60 98 64 95 / 10 10 0 10 0
LUBBOCK 95 62 100 67 96 / 20 20 0 10 10
DENVER CITY 96 58 96 64 94 / 10 10 0 10 0
BROWNFIELD 98 60 98 64 94 / 10 10 0 10 0
CHILDRESS 91 63 96 67 98 / 10 10 10 10 20
SPUR 94 66 100 65 96 / 20 20 10 10 20
ASPERMONT 95 69 102 68 98 / 10 10 10 10 20
&&
.LUB WATCHES/WARNINGS/ADVISORIES...
NONE.
&&
$$
99/99/26
449
FXUS64 KLUB 160921
AFDLUB
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LUBBOCK TX
421 AM CDT THU MAY 16 2013
.SHORT TERM...
WHILE MODEST RIDGING IS IN PLACE EARLY THIS MORNING BEHIND THE UPPER
LOW OVER EASTERN OKLAHOMA WHICH WREAKED HAVOC NEAR THE DFW
METROPLEX...SMALL SCALE TROUGH AXIS IS SITUATED ALONG THE SPINE OF
THE ROCKIES FROM COLORADO OUT TO EL PASO. IN COMPARING RAOBS WITH
00Z INITIALIZATION...NWP SEEMS TO HAVE ANALYZED THIS FEATURE JUST A
BIT FASTER THAN WHAT THE OBS SUGGEST IS CLOSER TO REALITY. GIVEN AN
HOUR OR TWO SLOWER...THIS WILL PLACE THE TROUGH AXIS FROM CENTRAL
NEBRASKA INTO THE PANHANDLE THENCE OUT TOWARD THE BIG BEND LATE
THIS AFTERNOON. Q-VECTOR ANALYSIS IN ALL THREE MAJOR NWP SOLUTIONS
INDICATE SOME WEAK UPWARD LIFT THIS AFTERNOON ACROSS OUR CWA.
AT THE SURFACE...A WEAK FRONTAL BOUNDARY HAS BEEN SAGGING
SOUTHWESTWARD ACROSS THE CWFA. AT 2AM THIS BDRY WAS LOCATED ALONG A
LINE FROM MULESHOE TO LUBBOCK TO JAYTON. THIS PLUS THE RETREATING
DRYLINE TO OUR SOUTH SHOULD END UP NEAR THE TX/NM STATE LINE BY
SUNRISE AND MIX EASTWARD ONCE AGAIN TODAY...BUT LIKELY NOT NEARLY AS
FAR AS YESTERDAY...PERHAPS ENDING UP ALONG OR JUST EAST OF THE I-27
CORRIDOR. WESTERN EXTENT OF THETA-E RIDGE SHOULD BE ACROSS THE
CENTRAL ZONES WHERE MUCAPE OF 2-2.5 KJ/KG WILL EXIST. IT WOULD
APPEAR THAT THE CONDITIONS FAVORABLE FOR CONVECTION MAY BE QUITE
NARROW AS THE ATMOSPHERE APPEARS TO BE CAPPED THIS AFTERNOON ACROSS
THE EASTERN ROLLING PLAINS. SHEAR WILL BE INITIALLY QUITE ANEMIC
WITH 0-6KM BULK VALUES LESS THAN 25 KTS THOUGH SHEAR IS EXPECTED
TO INCREASE LATE THIS AFTERNOON AS THE DRYLINE BEGINS TO RETREAT.
GIVEN ANGLE BETWEEN MID LEVEL FLOW AND SURFACE BOUNDARY...DISCRETE
STORMS WILL BE FAVORED. THE THREAT IS CONDITIONAL ON CONVECTIVE
INITIATION BUT ANY STORMS WHICH DO FORM WILL CERTAINLY HAVE THE
OPPORTUNITY TO PRODUCE SEVERE WEATHER. AFTER ALL...IT IS MAY IN
WEST TEXAS. FARTHER WEST...SOME VIRGA SHOWERS WITH GUSTY WINDS
WILL BE POSSIBLE. ACTIVITY SHOULD DIMINISH QUICKLY AROUND SUNSET.
OUT WEST...THIS AFTERNOON...NEAR CRITICAL FIRE WEATHER CONDITIONS
WILL EXIST AGAIN.
&&
.LONG TERM...
WE WILL START THE EXTENDED PERIOD WITH TEMPS WARMING INTO THE UPPER
90S TO TRIPLE DIGIT READINGS TOMORROW...THANKS TO AN EASTWARD
TRANSLATING UA RIDGE AND 850 MB TEMPS AOA 30 DEGREES. THE TEMP AT
KLBB IS FORECAST TO BE 99 DEGREES WHICH IS ONLY 2 DEGREES SHY OF THE
RECORD SET IN 1996 /COULD BE A CLOSE CALL/. CONCURRENTLY A BROAD UA
TROUGH WILL BE DIGGING ESE TOWARDS THE FOUR-CORNERS REGION...WHICH
WILL VEER FLOW ALOFT TO THE SW. AS SUCH...SFC WINDS ON THE CAPROCK
WILL ALSO VEER TO THE SW WHICH WILL SHIFT THE DRYLINE TO NEAR THE
SERN TEXAS PANHANDLE. NO PRECIP IS ANTICIPATED TO DEVELOP ALONG THE
DRYLINE TOMORROW GIVEN A STRONG CAP...BUT THIS APPEARS TO NOT BE THE
CASE FOR SATURDAY. AS THE AFOREMENTIONED UA DISTURBANCE TREKS
ACROSS THE SOUTHERN ROCKIES THUS NEARING THE SOUTHERN PLAINS ON
SATURDAY...LOWERING HEIGHTS WILL COOL TEMPS OFF JUST A BIT /LOWER TO
UPPER 90S/ BUT WILL ALSO PROMOTE A DEEPENING SFC LOW NW OF THE
REGION LEADING TO BREEZY S TO SW WINDS /20-25 MPH/ AND AS SUCH THE
DRYLINE SETTING UP ACROSS THE ROLLING PLAINS BY THE AFTN. ELEVATED
TO CRITICAL FIRE WEATHER CONDITIONS WILL EXIST WEST OF THE
DRYLINE...DUE TO ABOVE NORM TEMPS...RHS 5-15 PERCENT AND BREEZY
CONDITIONS. ADDITIONAL FIRE WEATHER HIGHLIGHTS MAY BE WARRANTED. SFC
CONVERGENCE ALONG THE DRYLINE SATURDAY IS IMPROVED GIVEN THE
EXPECTED BREEZY CONDITIONS...AND THE CAP APPEARS WEAKER THAN THE
PREVIOUS DAY DUE TO AN EXITING UA RIDGE AND HENCE SUBSIDENCE BEING
LESS INFLUENTIAL. MODEL RUNS GENERALLY BREAK OUT STORMS LATE IN THE
AFTN/EARLY EVENING /AFTER 18Z/ COINCIDING WITH A WEAKENING CAP.
SFC-BASED CAPE OF 1.0-3.0 KJ/KG COMBINED WITH 25-35 KTS OF 0-6 KM
BULK SHEAR AND STEEPENING LAPSE RATES SUGGEST ELEVATED STORMS
REACHING STRONG TO SEVERE LEVELS. HAVE BUMPED POPS UP TO CHANCE
CATEGORY ACROSS THE ROLLING PLAINS DURING THE EVENING HOURS...AS
THIS QPF SIGNAL HAS BEEN CONSISTENTLY SHOWN FOR THE LAST SEVERAL
MODEL RUNS.
AS THE LEAD SHORTWAVE OF THE BROAD UA DISTURBANCE EJECTS NE ACROSS
THE PANHANDLES/SOUTHERN PLAINS LATE SATURDAY NIGHT/EARLY SUNDAY
MORNING...ITS ASSOCIATED PACIFIC FRONT WILL PROMOTE BREEZY WESTERLY
WINDS TO FILTER ACROSS THE CWA...AND THEREFORE SHIFTING THE DRYLINE
TO THE EASTERN FRINGES OF THE CWA SUNDAY AFTN/EVENING. THE PACIFIC
FRONT WILL NOT COOL US DOWN MUCH /80S AND 90S/ BUT WILL AID IN
ENCOURAGING ANOTHER ELEVATED FIRE WEATHER DAY DUE TO DRY AND BREEZY
CONDITIONS. SLIGHTLY BREEZY WRLY WINDS WILL ENSUE ON MONDAY...MAKING
FOR ANOTHER RELATIVELY WARM DAY /80S AND 90S/. THE MEAN TROUGH WILL
BE TRAVERSING THE CENTRAL PLAINS MONDAY NIGHT...AND WILL SEND
DOWN ITS ASSOCIATED FROPA THROUGH THE ENTIRE CWA BY EARLY TUESDAY
MORNING /PER THE ECMWF/ OR HANGING UP ACROSS THE SERN TEXAS
PANHANDLE WHERE IT WASHES OUT /PER THE GFS/. THUS...TEMPS WILL
EITHER BY RELATIVELY WARM OR SLIGHTLY COOLER IF FOLLOWING THE GFS
AND ECMWF RESPECTIVELY. HAVE LEANED TOWARDS THE ECMWF ATTM /HIGHS IN
THE 80S WITH A FEW 90S/ AS THE QUASI-STATIONARY FRONT SCENARIO IS A
NEW DEVELOPMENT WITH THIS CURRENT GFS RUN...VERSUS THE MORE
PERSISTENT ECMWF. UA RIDGING WILL RETURN FOR MID TO LATE WEEK AND
WARMTH WILL RESUME.
&&
.PRELIMINARY POINT TEMPS/POPS...
FRIONA 92 58 96 60 93 / 10 10 0 10 0
TULIA 91 60 98 62 94 / 20 20 0 10 10
PLAINVIEW 93 61 98 64 95 / 20 20 0 10 10
LEVELLAND 95 60 98 64 95 / 10 10 0 10 0
LUBBOCK 95 62 100 67 96 / 20 20 0 10 10
DENVER CITY 96 58 96 64 94 / 10 10 0 10 0
BROWNFIELD 98 60 98 64 94 / 10 10 0 10 0
CHILDRESS 91 63 96 67 98 / 10 10 10 10 20
SPUR 94 66 100 65 96 / 20 20 10 10 20
ASPERMONT 95 69 102 68 98 / 10 10 10 10 20
&&
.LUB WATCHES/WARNINGS/ADVISORIES...
NONE.
&&
$$
26/29
190
FXUS64 KLUB 160428
AFDLUB
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LUBBOCK TX
1128 PM CDT WED MAY 15 2013
.AVIATION...
SLIGHT CHANCE AT FOG AND LOW CIGS EARLY THURSDAY MORNING WITH A
HIGHER PROBABILITY AT KCDS AS WINDS GO LIGHT. CONFIDENCE IS NOT
INCREDIBLY HIGH IN THIS OCCURRENCE SO HAVE INTRODUCED LIGHT
RESTRICTIONS AT KCDS FOR THIS TAF ISSUANCE. HIGH BASED
THUNDERSTORMS OR RAIN SHOWERS WILL BE POSSIBLE THURSDAY AFTERNOON
NEAR KLBB.
&&
.PREV DISCUSSION... /ISSUED 908 PM CDT WED MAY 15 2013/
UPDATE...
MAIN CHANGE WAS TO REMOVE SEVERE WORDING FROM THE FORECAST AND TO
CANCEL SEVERE THUNDERSTORM WATCH 160. A FEW LINGERING RAIN SHOWERS
WERE LOCATED OVER THE SOUTHWESTERN SOUTH PLAINS BUT WERE QUICKLY
WEAKENING.
PREV DISCUSSION... /ISSUED 341 PM CDT WED MAY 15 2013/
SHORT TERM...
A NUMBER OF CONTRIBUTING AND COMPLICATING FEATURES TODAY...THOUGH
THE SURFACE DRY-LINE HAS BECOME EVIDENT FROM NEAR LEVELLAND THROUGH
TAHOKA TOWARDS GAIL AND HAS BEEN THE FOCUS OF THUNDERSTORM
DEVELOPMENT OVER THE PAST HOUR OR SO. THERE REMAINS QUITE A BIT OF
UNCERTAINTY REGARDING THUNDERSTORM DEVELOPMENT NORTH AND EAST OF
THE DRY-LINE WITH A BACKING LOW LEVEL WIND FIELD THAT WILL MOISTEN
YET ALSO COOL. SO...SIDED WITH THE CURRENT TRENDS FAVORING THUNDER
DEVELOPMENT TO STEER MAINLY EAST AND SOUTHEAST THROUGH THE DRY-LINE
AREA THOUGH RETAINED SLIGHT CHANCE AS WELL FURTHER NORTH. A SEVERE
THUNDERSTORM WATCH HAS JUST BEEN ISSUED FOR OUR EASTERN AREAS VALID
UNTIL MIDNIGHT. UPPER HEIGHTS SHOULD REBOUND A BIT ON THURSDAY AS
THE UPPER TROUGH STEERS OFF TO THE EAST WHICH CONTRIBUTES TYPICAL
UNCERTAINTY OF POTENTIALLY CAPPED ENVIRONMENT...THOUGH THE SURFACE
DRY-LINE SHOULD MORE CONFIDENTIALLY FILL A NARROW ZONE NORTH-SOUTH
THROUGH CENTRAL OR EAST-CENTRAL ZONES. WE ADDED A SLIGHT CHANCE OF
THUNDERSTORMS TO THIS ZONE FOR THURSDAY AFTERNOON INTO THURSDAY
EVENING. LITTLE DISAGREEMENT WITH TEMPERATURES THIS GO-AROUND.
RMCQUEEN
LONG TERM...
HOT CONDITIONS WILL KICK OFF THE EXTENDED AS UPPER RIDGING TRAVERSES
THE MIDSECTION OF THE NATION FRIDAY. THIS WILL SUPPORT THE HOTTEST
DAY SO FAR THIS SPRING WITH HIGHS WELL INTO THE MID AND UPPER
90S...WITH EVEN LOWER TRIPLE DIGITS NOT OUT OF THE QUESTION.
HOPEFULLY LUBBOCK CAN STAY BELOW THE RECORD HIGH FOR THE DAY...WHICH
SITS AT 101 DEGREES /SET IN 1996/ THOUGH IT WILL BE A CLOSE CALL.
THE DRYLINE SHOULD BE POSITIONED ACROSS THE NORTHEAST ZONES BY LATE
IN THE DAY FRIDAY...BUT WARM MID-LEVEL TEMPERATURES WILL LIKELY KEEP
THE MOIST SECTOR CAPPED. THIS MAY CHANGE BY LATE IN THE DAY SATURDAY
AS A NEGATIVELY TILTED UPPER TROUGH APPROACHES THROUGH THE
INTERMOUNTAIN WEST. IN ADVANCE OF THIS WAVE...HEIGHT FALLS WILL
SUPPORT A STOUT SOUTHERLY LLJ EARLY SATURDAY...WHICH WILL HELP
TRANSPORT MOISTURE NORTHWESTWARD ACROSS MUCH/ALL OF THE FA.
HOWEVER...BY LATE SATURDAY AFTERNOON THE DRYLINE IS EXPECTED TO
MIX/ADVANCE TO NEAR THE EDGE OF THE CAPROCK ESCARPMENT AS
SOUTHWESTERLY FLOW ALOFT STRENGTHENS. WEST OF THE DRYLINE ELEVATED
TO CRITICAL FIRE WEATHER CONDITIONS WILL MATERIALIZE WHILE ALONG AND
EAST OF THE DRYLINE DEEP MOIST CONVECTION WILL BE POSSIBLE. THERE
REMAINS SOME UNCERTAINTY REGARDING THE TIMING OF THE LARGE SCALE
ASCENT WITH THE APPROACHING WAVE...PERHAPS AS EARLY AS LATE SATURDAY
AFTERNOON OR PERHAPS HOLDING OFF UNTIL LATER IN THE EVENING. THIS
COULD HAVE SOME IMPACT ON EXACTLY WHEN THE MORE ROBUST CONVECTION
DEVELOPS...BUT IT DOES APPEAR AT LEAST THE EASTERN ZONES WILL HAVE A
DECENT SHOT OF STORMS LATE SATURDAY...WITH MODERATE INSTABILITY AND
IMPROVING SHEAR SUPPORTING A SEVERE WEATHER THREAT.
UPPER LEVEL TROUGHINESS WILL LINGER ACROSS THE INTERMOUNTAIN WEST
LATE WEEKEND INTO EARLY NEXT WEEK...WITH THE LEAD SHORTWAVE TROUGH
WINDING UP ACROSS THE UPPER MIDWEST. THE LEAD WAVE WILL LIKELY SHUNT
THE DRYLINE /COUPLED WITH A WEAK PACIFIC FRONT/ EAST OF THE CWA
SUNDAY...WITH GUSTY AND DRY WESTERLY WINDS PROVIDING ANOTHER DAY OF
HEIGHTENED FIRE WEATHER. THINGS WILL NOT CHANGE MUCH ON MONDAY WITH
ANOTHER WARM...DRY AND BREEZY DAY. A WEAK COLD FRONT WILL FOLLOW
MONDAY NIGHT AS RIDGING BUILDS INTO THE WEST IN ADVANCE OF A STORM
SYSTEM DIGGING TOWARD THE PACIFIC NORTHWEST.
UNFORTUNATELY...CURRENTLY IT APPEARS LOW-LEVEL MOISTURE WILL BE
NEGLIGIBLE IN ADVANCE OF THIS FRONT...AND THUS POPS REMAIN LOW.
AFTER PEAKING FRIDAY...TEMPERATURES SHOULD SLOWLY TREND DOWNWARD
WITH THE APPROACH AND PASSAGE OF THE UPPER TROUGH...THE WEAK PACIFIC
FRONT EARLY SUNDAY...THEN ANOTHER WEAK FRONT MONDAY EVENING.
STILL...ABOVE AVERAGE TEMPERATURES ARE EXPECTED THROUGH THE PERIOD.
&&
.PRELIMINARY POINT TEMPS/POPS...
FRIONA 54 94 58 96 59 / 10 10 10 0 10
TULIA 57 95 57 98 61 / 20 20 20 0 10
PLAINVIEW 57 95 61 98 64 / 20 20 20 0 10
LEVELLAND 57 96 61 98 64 / 20 10 10 0 10
LUBBOCK 57 96 63 100 67 / 20 20 20 0 10
DENVER CITY 59 96 59 96 63 / 20 10 10 0 10
BROWNFIELD 58 97 60 98 64 / 20 10 10 0 10
CHILDRESS 62 92 65 98 69 / 20 10 10 10 10
SPUR 60 95 62 100 65 / 20 10 20 10 10
ASPERMONT 64 96 64 102 68 / 30 10 10 10 10
&&
.LUB WATCHES/WARNINGS/ADVISORIES...
NONE.
&&
$$
01
559
FXUS64 KLUB 160208 AAA
AFDLUB
AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE LUBBOCK TX
908 PM CDT WED MAY 15 2013
.UPDATE...
MAIN CHANGE WAS TO REMOVE SEVERE WORDING FROM THE FORECAST AND TO
CANCEL SEVERE THUNDERSTORM WATCH 160. A FEW LINGERING RAIN SHOWERS
WERE LOCATED OVER THE SOUTHWESTERN SOUTH PLAINS BUT WERE QUICKLY
WEAKENING.
&&
PREV DISCUSSION... /ISSUED 341 PM CDT WED MAY 15 2013/
SHORT TERM...
A NUMBER OF CONTRIBUTING AND COMPLICATING FEATURES TODAY...THOUGH
THE SURFACE DRY-LINE HAS BECOME EVIDENT FROM NEAR LEVELLAND THROUGH
TAHOKA TOWARDS GAIL AND HAS BEEN THE FOCUS OF THUNDERSTORM
DEVELOPMENT OVER THE PAST HOUR OR SO. THERE REMAINS QUITE A BIT OF
UNCERTAINTY REGARDING THUNDERSTORM DEVELOPMENT NORTH AND EAST OF
THE DRY-LINE WITH A BACKING LOW LEVEL WIND FIELD THAT WILL MOISTEN
YET ALSO COOL. SO...SIDED WITH THE CURRENT TRENDS FAVORING THUNDER
DEVELOPMENT TO STEER MAINLY EAST AND SOUTHEAST THROUGH THE DRY-LINE
AREA THOUGH RETAINED SLIGHT CHANCE AS WELL FURTHER NORTH. A SEVERE
THUNDERSTORM WATCH HAS JUST BEEN ISSUED FOR OUR EASTERN AREAS VALID
UNTIL MIDNIGHT. UPPER HEIGHTS SHOULD REBOUND A BIT ON THURSDAY AS
THE UPPER TROUGH STEERS OFF TO THE EAST WHICH CONTRIBUTES TYPICAL
UNCERTAINTY OF POTENTIALLY CAPPED ENVIRONMENT...THOUGH THE SURFACE
DRY-LINE SHOULD MORE CONFIDENTIALLY FILL A NARROW ZONE NORTH-SOUTH
THROUGH CENTRAL OR EAST-CENTRAL ZONES. WE ADDED A SLIGHT CHANCE OF
THUNDERSTORMS TO THIS ZONE FOR THURSDAY AFTERNOON INTO THURSDAY
EVENING. LITTLE DISAGREEMENT WITH TEMPERATURES THIS GO-AROUND.
RMCQUEEN
LONG TERM...
HOT CONDITIONS WILL KICK OFF THE EXTENDED AS UPPER RIDGING TRAVERSES
THE MIDSECTION OF THE NATION FRIDAY. THIS WILL SUPPORT THE HOTTEST
DAY SO FAR THIS SPRING WITH HIGHS WELL INTO THE MID AND UPPER
90S...WITH EVEN LOWER TRIPLE DIGITS NOT OUT OF THE QUESTION.
HOPEFULLY LUBBOCK CAN STAY BELOW THE RECORD HIGH FOR THE DAY...WHICH
SITS AT 101 DEGREES /SET IN 1996/ THOUGH IT WILL BE A CLOSE CALL.
THE DRYLINE SHOULD BE POSITIONED ACROSS THE NORTHEAST ZONES BY LATE
IN THE DAY FRIDAY...BUT WARM MID-LEVEL TEMPERATURES WILL LIKELY KEEP
THE MOIST SECTOR CAPPED. THIS MAY CHANGE BY LATE IN THE DAY SATURDAY
AS A NEGATIVELY TILTED UPPER TROUGH APPROACHES THROUGH THE
INTERMOUNTAIN WEST. IN ADVANCE OF THIS WAVE...HEIGHT FALLS WILL
SUPPORT A STOUT SOUTHERLY LLJ EARLY SATURDAY...WHICH WILL HELP
TRANSPORT MOISTURE NORTHWESTWARD ACROSS MUCH/ALL OF THE FA.
HOWEVER...BY LATE SATURDAY AFTERNOON THE DRYLINE IS EXPECTED TO
MIX/ADVANCE TO NEAR THE EDGE OF THE CAPROCK ESCARPMENT AS
SOUTHWESTERLY FLOW ALOFT STRENGTHENS. WEST OF THE DRYLINE ELEVATED
TO CRITICAL FIRE WEATHER CONDITIONS WILL MATERIALIZE WHILE ALONG AND
EAST OF THE DRYLINE DEEP MOIST CONVECTION WILL BE POSSIBLE. THERE
REMAINS SOME UNCERTAINTY REGARDING THE TIMING OF THE LARGE SCALE
ASCENT WITH THE APPROACHING WAVE...PERHAPS AS EARLY AS LATE SATURDAY
AFTERNOON OR PERHAPS HOLDING OFF UNTIL LATER IN THE EVENING. THIS
COULD HAVE SOME IMPACT ON EXACTLY WHEN THE MORE ROBUST CONVECTION
DEVELOPS...BUT IT DOES APPEAR AT LEAST THE EASTERN ZONES WILL HAVE A
DECENT SHOT OF STORMS LATE SATURDAY...WITH MODERATE INSTABILITY AND
IMPROVING SHEAR SUPPORTING A SEVERE WEATHER THREAT.
UPPER LEVEL TROUGHINESS WILL LINGER ACROSS THE INTERMOUNTAIN WEST
LATE WEEKEND INTO EARLY NEXT WEEK...WITH THE LEAD SHORTWAVE TROUGH
WINDING UP ACROSS THE UPPER MIDWEST. THE LEAD WAVE WILL LIKELY SHUNT
THE DRYLINE /COUPLED WITH A WEAK PACIFIC FRONT/ EAST OF THE CWA
SUNDAY...WITH GUSTY AND DRY WESTERLY WINDS PROVIDING ANOTHER DAY OF
HEIGHTENED FIRE WEATHER. THINGS WILL NOT CHANGE MUCH ON MONDAY WITH
ANOTHER WARM...DRY AND BREEZY DAY. A WEAK COLD FRONT WILL FOLLOW
MONDAY NIGHT AS RIDGING BUILDS INTO THE WEST IN ADVANCE OF A STORM
SYSTEM DIGGING TOWARD THE PACIFIC NORTHWEST.
UNFORTUNATELY...CURRENTLY IT APPEARS LOW-LEVEL MOISTURE WILL BE
NEGLIGIBLE IN ADVANCE OF THIS FRONT...AND THUS POPS REMAIN LOW.
AFTER PEAKING FRIDAY...TEMPERATURES SHOULD SLOWLY TREND DOWNWARD
WITH THE APPROACH AND PASSAGE OF THE UPPER TROUGH...THE WEAK PACIFIC
FRONT EARLY SUNDAY...THEN ANOTHER WEAK FRONT MONDAY EVENING.
STILL...ABOVE AVERAGE TEMPERATURES ARE EXPECTED THROUGH THE PERIOD.
&&
.PRELIMINARY POINT TEMPS/POPS...
FRIONA 54 94 58 96 59 / 10 10 10 0 10
TULIA 57 95 57 98 61 / 20 20 20 0 10
PLAINVIEW 57 95 61 98 64 / 20 20 20 0 10
LEVELLAND 57 96 61 98 64 / 20 10 10 0 10
LUBBOCK 57 96 63 100 67 / 20 20 20 0 10
DENVER CITY 59 96 59 96 63 / 20 10 10 0 10
BROWNFIELD 58 97 60 98 64 / 20 10 10 0 10
CHILDRESS 62 92 65 98 69 / 20 10 10 10 10
SPUR 60 95 62 100 65 / 20 10 20 10 10
ASPERMONT 64 96 64 102 68 / 30 10 10 10 10
&&
.LUB WATCHES/WARNINGS/ADVISORIES...
NONE.
&&
$$
01
696
FXUS64 KLUB 152325
AFDLUB
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LUBBOCK TX
625 PM CDT WED MAY 15 2013
.AVIATION...
HIGH BASED THUNDERSTORM ACTIVITY WILL CONTINUE TO WANE OVER THE
NEXT FEW HOURS WITH LITTLE CHANCE AT REDEVELOPMENT AFFECTING
EITHER TAF SITE. WIND DIRECTIONS MAY BE VARIABLE EARLY THIS
EVENING AT KLBB WITH DECAYING THUNDERSTORMS TO THE SOUTH OF THE
REGION BUT GENERAL FLOW WILL BE OUT OF THE SOUTH. THUNDERSTORMS
WILL BE POSSIBLE AGAIN TOMORROW AFTERNOON AT KLBB BUT CONFIDENCE
IS TOO LOW AT THE MOMENT TO MENTION ANYTHING IN THE TAF.
&&
.PREV DISCUSSION... /ISSUED 341 PM CDT WED MAY 15 2013/
SHORT TERM...
A NUMBER OF CONTRIBUTING AND COMPLICATING FEATURES TODAY...THOUGH
THE SURFACE DRY-LINE HAS BECOME EVIDENT FROM NEAR LEVELLAND THROUGH
TAHOKA TOWARDS GAIL AND HAS BEEN THE FOCUS OF THUNDERSTORM
DEVELOPMENT OVER THE PAST HOUR OR SO. THERE REMAINS QUITE A BIT OF
UNCERTAINTY REGARDING THUNDERSTORM DEVELOPMENT NORTH AND EAST OF
THE DRY-LINE WITH A BACKING LOW LEVEL WIND FIELD THAT WILL MOISTEN
YET ALSO COOL. SO...SIDED WITH THE CURRENT TRENDS FAVORING THUNDER
DEVELOPMENT TO STEER MAINLY EAST AND SOUTHEAST THROUGH THE DRY-LINE
AREA THOUGH RETAINED SLIGHT CHANCE AS WELL FURTHER NORTH. A SEVERE
THUNDERSTORM WATCH HAS JUST BEEN ISSUED FOR OUR EASTERN AREAS VALID
UNTIL MIDNIGHT. UPPER HEIGHTS SHOULD REBOUND A BIT ON THURSDAY AS
THE UPPER TROUGH STEERS OFF TO THE EAST WHICH CONTRIBUTES TYPICAL
UNCERTAINTY OF POTENTIALLY CAPPED ENVIRONMENT...THOUGH THE SURFACE
DRY-LINE SHOULD MORE CONFIDENTIALLY FILL A NARROW ZONE NORTH-SOUTH
THROUGH CENTRAL OR EAST-CENTRAL ZONES. WE ADDED A SLIGHT CHANCE OF
THUNDERSTORMS TO THIS ZONE FOR THURSDAY AFTERNOON INTO THURSDAY
EVENING. LITTLE DISAGREEMENT WITH TEMPERATURES THIS GO-AROUND.
RMCQUEEN
LONG TERM...
HOT CONDITIONS WILL KICK OFF THE EXTENDED AS UPPER RIDGING TRAVERSES
THE MIDSECTION OF THE NATION FRIDAY. THIS WILL SUPPORT THE HOTTEST
DAY SO FAR THIS SPRING WITH HIGHS WELL INTO THE MID AND UPPER
90S...WITH EVEN LOWER TRIPLE DIGITS NOT OUT OF THE QUESTION.
HOPEFULLY LUBBOCK CAN STAY BELOW THE RECORD HIGH FOR THE DAY...WHICH
SITS AT 101 DEGREES /SET IN 1996/ THOUGH IT WILL BE A CLOSE CALL.
THE DRYLINE SHOULD BE POSITIONED ACROSS THE NORTHEAST ZONES BY LATE
IN THE DAY FRIDAY...BUT WARM MID-LEVEL TEMPERATURES WILL LIKELY KEEP
THE MOIST SECTOR CAPPED. THIS MAY CHANGE BY LATE IN THE DAY SATURDAY
AS A NEGATIVELY TILTED UPPER TROUGH APPROACHES THROUGH THE
INTERMOUNTAIN WEST. IN ADVANCE OF THIS WAVE...HEIGHT FALLS WILL
SUPPORT A STOUT SOUTHERLY LLJ EARLY SATURDAY...WHICH WILL HELP
TRANSPORT MOISTURE NORTHWESTWARD ACROSS MUCH/ALL OF THE FA.
HOWEVER...BY LATE SATURDAY AFTERNOON THE DRYLINE IS EXPECTED TO
MIX/ADVANCE TO NEAR THE EDGE OF THE CAPROCK ESCARPMENT AS
SOUTHWESTERLY FLOW ALOFT STRENGTHENS. WEST OF THE DRYLINE ELEVATED
TO CRITICAL FIRE WEATHER CONDITIONS WILL MATERIALIZE WHILE ALONG AND
EAST OF THE DRYLINE DEEP MOIST CONVECTION WILL BE POSSIBLE. THERE
REMAINS SOME UNCERTAINTY REGARDING THE TIMING OF THE LARGE SCALE
ASCENT WITH THE APPROACHING WAVE...PERHAPS AS EARLY AS LATE SATURDAY
AFTERNOON OR PERHAPS HOLDING OFF UNTIL LATER IN THE EVENING. THIS
COULD HAVE SOME IMPACT ON EXACTLY WHEN THE MORE ROBUST CONVECTION
DEVELOPS...BUT IT DOES APPEAR AT LEAST THE EASTERN ZONES WILL HAVE A
DECENT SHOT OF STORMS LATE SATURDAY...WITH MODERATE INSTABILITY AND
IMPROVING SHEAR SUPPORTING A SEVERE WEATHER THREAT.
UPPER LEVEL TROUGHINESS WILL LINGER ACROSS THE INTERMOUNTAIN WEST
LATE WEEKEND INTO EARLY NEXT WEEK...WITH THE LEAD SHORTWAVE TROUGH
WINDING UP ACROSS THE UPPER MIDWEST. THE LEAD WAVE WILL LIKELY SHUNT
THE DRYLINE /COUPLED WITH A WEAK PACIFIC FRONT/ EAST OF THE CWA
SUNDAY...WITH GUSTY AND DRY WESTERLY WINDS PROVIDING ANOTHER DAY OF
HEIGHTENED FIRE WEATHER. THINGS WILL NOT CHANGE MUCH ON MONDAY WITH
ANOTHER WARM...DRY AND BREEZY DAY. A WEAK COLD FRONT WILL FOLLOW
MONDAY NIGHT AS RIDGING BUILDS INTO THE WEST IN ADVANCE OF A STORM
SYSTEM DIGGING TOWARD THE PACIFIC NORTHWEST.
UNFORTUNATELY...CURRENTLY IT APPEARS LOW-LEVEL MOISTURE WILL BE
NEGLIGIBLE IN ADVANCE OF THIS FRONT...AND THUS POPS REMAIN LOW.
AFTER PEAKING FRIDAY...TEMPERATURES SHOULD SLOWLY TREND DOWNWARD
WITH THE APPROACH AND PASSAGE OF THE UPPER TROUGH...THE WEAK PACIFIC
FRONT EARLY SUNDAY...THEN ANOTHER WEAK FRONT MONDAY EVENING.
STILL...ABOVE AVERAGE TEMPERATURES ARE EXPECTED THROUGH THE PERIOD.
&&
.PRELIMINARY POINT TEMPS/POPS...
FRIONA 54 94 58 96 59 / 10 10 10 0 10
TULIA 57 95 57 98 61 / 20 20 20 0 10
PLAINVIEW 57 95 61 98 64 / 20 20 20 0 10
LEVELLAND 57 96 61 98 64 / 20 10 10 0 10
LUBBOCK 57 96 63 100 67 / 20 20 20 0 10
DENVER CITY 59 96 59 96 63 / 20 10 10 0 10
BROWNFIELD 58 97 60 98 64 / 20 10 10 0 10
CHILDRESS 62 92 65 98 69 / 20 10 10 10 10
SPUR 60 95 62 100 65 / 20 10 20 10 10
ASPERMONT 64 96 64 102 68 / 30 10 10 10 10
&&
.LUB WATCHES/WARNINGS/ADVISORIES...
NONE.
&&
$$
01
940
FXUS64 KLUB 152041
AFDLUB
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LUBBOCK TX
341 PM CDT WED MAY 15 2013
.SHORT TERM...
A NUMBER OF CONTRIBUTING AND COMPLICATING FEATURES TODAY...THOUGH
THE SURFACE DRY-LINE HAS BECOME EVIDENT FROM NEAR LEVELLAND THROUGH
TAHOKA TOWARDS GAIL AND HAS BEEN THE FOCUS OF THUNDERSTORM
DEVELOPMENT OVER THE PAST HOUR OR SO. THERE REMAINS QUITE A BIT OF
UNCERTAINTY REGARDING THUNDERSTORM DEVELOPMENT NORTH AND EAST OF
THE DRY-LINE WITH A BACKING LOW LEVEL WIND FIELD THAT WILL MOISTEN
YET ALSO COOL. SO...SIDED WITH THE CURRENT TRENDS FAVORING THUNDER
DEVELOPMENT TO STEER MAINLY EAST AND SOUTHEAST THROUGH THE DRY-LINE
AREA THOUGH RETAINED SLIGHT CHANCE AS WELL FURTHER NORTH. A SEVERE
THUNDERSTORM WATCH HAS JUST BEEN ISSUED FOR OUR EASTERN AREAS VALID
UNTIL MIDNIGHT. UPPER HEIGHTS SHOULD REBOUND A BIT ON THURSDAY AS
THE UPPER TROUGH STEERS OFF TO THE EAST WHICH CONTRIBUTES TYPICAL
UNCERTAINTY OF POTENTIALLY CAPPED ENVIRONMENT...THOUGH THE SURFACE
DRY-LINE SHOULD MORE CONFIDENTIALLY FILL A NARROW ZONE NORTH-SOUTH
THROUGH CENTRAL OR EAST-CENTRAL ZONES. WE ADDED A SLIGHT CHANCE OF
THUNDERSTORMS TO THIS ZONE FOR THURSDAY AFTERNOON INTO THURSDAY
EVENING. LITTLE DISAGREEMENT WITH TEMPERATURES THIS GO-AROUND.
RMCQUEEN
&&
.LONG TERM...
HOT CONDITIONS WILL KICK OFF THE EXTENDED AS UPPER RIDGING TRAVERSES
THE MIDSECTION OF THE NATION FRIDAY. THIS WILL SUPPORT THE HOTTEST
DAY SO FAR THIS SPRING WITH HIGHS WELL INTO THE MID AND UPPER
90S...WITH EVEN LOWER TRIPLE DIGITS NOT OUT OF THE QUESTION.
HOPEFULLY LUBBOCK CAN STAY BELOW THE RECORD HIGH FOR THE DAY...WHICH
SITS AT 101 DEGREES /SET IN 1996/ THOUGH IT WILL BE A CLOSE CALL.
THE DRYLINE SHOULD BE POSITIONED ACROSS THE NORTHEAST ZONES BY LATE
IN THE DAY FRIDAY...BUT WARM MID-LEVEL TEMPERATURES WILL LIKELY KEEP
THE MOIST SECTOR CAPPED. THIS MAY CHANGE BY LATE IN THE DAY SATURDAY
AS A NEGATIVELY TILTED UPPER TROUGH APPROACHES THROUGH THE
INTERMOUNTAIN WEST. IN ADVANCE OF THIS WAVE...HEIGHT FALLS WILL
SUPPORT A STOUT SOUTHERLY LLJ EARLY SATURDAY...WHICH WILL HELP
TRANSPORT MOISTURE NORTHWESTWARD ACROSS MUCH/ALL OF THE FA.
HOWEVER...BY LATE SATURDAY AFTERNOON THE DRYLINE IS EXPECTED TO
MIX/ADVANCE TO NEAR THE EDGE OF THE CAPROCK ESCARPMENT AS
SOUTHWESTERLY FLOW ALOFT STRENGTHENS. WEST OF THE DRYLINE ELEVATED
TO CRITICAL FIRE WEATHER CONDITIONS WILL MATERIALIZE WHILE ALONG AND
EAST OF THE DRYLINE DEEP MOIST CONVECTION WILL BE POSSIBLE. THERE
REMAINS SOME UNCERTAINTY REGARDING THE TIMING OF THE LARGE SCALE
ASCENT WITH THE APPROACHING WAVE...PERHAPS AS EARLY AS LATE SATURDAY
AFTERNOON OR PERHAPS HOLDING OFF UNTIL LATER IN THE EVENING. THIS
COULD HAVE SOME IMPACT ON EXACTLY WHEN THE MORE ROBUST CONVECTION
DEVELOPS...BUT IT DOES APPEAR AT LEAST THE EASTERN ZONES WILL HAVE A
DECENT SHOT OF STORMS LATE SATURDAY...WITH MODERATE INSTABILITY AND
IMPROVING SHEAR SUPPORTING A SEVERE WEATHER THREAT.
UPPER LEVEL TROUGHINESS WILL LINGER ACROSS THE INTERMOUNTAIN WEST
LATE WEEKEND INTO EARLY NEXT WEEK...WITH THE LEAD SHORTWAVE TROUGH
WINDING UP ACROSS THE UPPER MIDWEST. THE LEAD WAVE WILL LIKELY SHUNT
THE DRYLINE /COUPLED WITH A WEAK PACIFIC FRONT/ EAST OF THE CWA
SUNDAY...WITH GUSTY AND DRY WESTERLY WINDS PROVIDING ANOTHER DAY OF
HEIGHTENED FIRE WEATHER. THINGS WILL NOT CHANGE MUCH ON MONDAY WITH
ANOTHER WARM...DRY AND BREEZY DAY. A WEAK COLD FRONT WILL FOLLOW
MONDAY NIGHT AS RIDGING BUILDS INTO THE WEST IN ADVANCE OF A STORM
SYSTEM DIGGING TOWARD THE PACIFIC NORTHWEST.
UNFORTUNATELY...CURRENTLY IT APPEARS LOW-LEVEL MOISTURE WILL BE
NEGLIGIBLE IN ADVANCE OF THIS FRONT...AND THUS POPS REMAIN LOW.
AFTER PEAKING FRIDAY...TEMPERATURES SHOULD SLOWLY TREND DOWNWARD
WITH THE APPROACH AND PASSAGE OF THE UPPER TROUGH...THE WEAK PACIFIC
FRONT EARLY SUNDAY...THEN ANOTHER WEAK FRONT MONDAY EVENING.
STILL...ABOVE AVERAGE TEMPERATURES ARE EXPECTED THROUGH THE PERIOD.
&&
.PRELIMINARY POINT TEMPS/POPS...
FRIONA 54 94 58 96 59 / 10 10 10 0 10
TULIA 57 95 57 98 61 / 20 20 20 0 10
PLAINVIEW 57 95 61 98 64 / 20 20 20 0 10
LEVELLAND 57 96 61 98 64 / 20 10 10 0 10
LUBBOCK 57 96 63 100 67 / 20 20 20 0 10
DENVER CITY 59 96 59 96 63 / 20 10 10 0 10
BROWNFIELD 58 97 60 98 64 / 20 10 10 0 10
CHILDRESS 62 92 65 98 69 / 20 10 10 10 10
SPUR 60 95 62 100 65 / 20 10 20 10 10
ASPERMONT 64 96 64 102 68 / 30 10 10 10 10
&&
.LUB WATCHES/WARNINGS/ADVISORIES...
NONE.
&&
$$
05/23
423
FXUS64 KLUB 151749
AFDLUB
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LUBBOCK TX
1249 PM CDT WED MAY 15 2013
.AVIATION...
SURFACE LOW PRESSURE TROUGH NEAR KLBB WITH A SURFACE DRY-LINE
EDGING WESTWARD TO NEAR KLBB BY 00Z THIS EVENING. THIS MAY BE A
FOCUS FOR A FEW HIGH-BASED THUNDERSTORMS LATE THIS AFTERNOON AND
EARLY THIS EVENING. KCDS NOW APPEARS LIKELY TO REMAIN TOO COOL TO
MENTION THUNDERSTORM CHANCES TODAY...DUE TO BACKING LOW LEVEL FLOW
AND LINGERING MID AND UPPER LEVEL CLOUDINESS WITH WEAK UPPER LEVEL
LOW PRESSURE SYSTEM PASSING OVERHEAD EARLY THIS AFTERNOON. BUT LOW
LEVEL MOISTURE WILL REMAIN ELEVATED AT KCDS THROUGH THE PERIOD.
RMCQUEEN
&&
.PREV DISCUSSION... /ISSUED 559 AM CDT WED MAY 15 2013/
AVIATION...
VFR CONDITIONS EXPECTED AT BOTH TERMINALS NEXT 24 HOURS. PRIMARY
AVIATION THREAT WILL BE HIGH BASED VIRGA SHOWERS AT KLBB AND
THUNDERSTORMS AT KCDS THIS AFTERNOON INTO THE EARLY EVENING HOURS.
LOW LEVEL PROFILES ARE SUPPORTIVE OF STRONG DOWNBURST WITH THAT
ACTIVITY. THAT SAID...IT IS HIGHLY RECOMMENDED TO AVOID FLYING
UNDER/NEAR PRECIPITATION ACTIVITY TODAY.
PREV DISCUSSION... /ISSUED 311 AM CDT WED MAY 15 2013/
SHORT TERM...
UPPER LOW WHICH HAD SAT OVER NORTHWESTERN MEXICO FOR MUCH OF THE
LAST WEEK CONTINUES TO EJECT INTO THE CENTRAL PLAINS EARLY THIS
MORNING. THIS FEATURE HAS BEEN RESPONSIBLE FOR MAINTAINING A REGION
OF RAIN SHOWERS ACROSS THE BIG COUNTRY AND CONCHO VALLEY THIS
MORNING. BY LATE THIS AFTERNOON...LOW MAY ONCE AGAIN CLOSE THOUGH
EFFECTS ON OUR SENSIBLE WEATHER WILL BE MINIMIZED AS NORTHWESTERLY
FLOW WILL PERSIST THROUGH THURSDAY MORNING. THE NAM PORTRAYS A 45KT
LLJ ACROSS OUR REGION EARLY THIS MORNING AND THIS LOOKS ABOUT ON
TARGET PER TTU SODAR DATA FROM REESE/HEREFORD/CHILDRESS.
PRIMARY FCST CHALLENGE REMAINS PROSPECTS FOR TRW ACROSS THE EASTERN
ZONES ONCE AGAIN TODAY. THE DRYLINE LOOKS TO PUSH WELL INTO THE
ROLLING PLAINS AND POSSIBLY EAST OF OUR CWFA WITH DRYLINE BULGE NEAR
STONEWALL COUNTY BEING DEPICTED BY THE MAJOR NWP PLAYERS. THE NAM
IS ONCE AGAIN DEPICTING HIGH BASED CONVECTION BEHIND THE DRYLINE.
AM HAVING A HARD TIME BUYING OFF ON THIS IDEA GIVEN OUR LOCATION OF
THE SUBSIDENT SIDE OF THE UPPER LOW. HOWEVER...THERE WILL EXIST
SOME MID LEVEL MOISTURE AND WILL MAKE MENTION OF ISOLATED T OUT WEST
WHILE MAINTAINING SCHC ACROSS THE ROLLING PLAINS. GIVEN CAPE IN
EXCESS OF 3KJ/KG AND SINCE IT IS MAY AFTER ALL...SOME STRONG TO
POSSIBLY SEVERE STORMS WILL BE POSSIBLE EAST. GOLF BALL HAIL AND
WINDS TO 60+ MPH WILL CERTAINLY BE POSSIBLE THOUGH A WIDESPREAD
EVENT IS NOT EXPECTED. AFTER THE LOSS OF DAYTIME HEATING...THINGS
SHOULD QUIET DOWN ONCE AGAIN.
LONG TERM...
THE OPEN WAVE DISTURBANCE THAT IS PROGRESSING NE ACROSS THE SOUTHERN
PLAINS EARLY THIS MORNING...WILL BE NEARING THE CENTRAL MISSISSIPPI
VALLEY AT THE START OF THE EXTENDED PERIOD. THURSDAY WILL BE
CHARACTERIZED BY AN UPTICK IN MID-UPPER LEVEL THICKNESS VALUES DUE
TO AN APPROACHING LOW AMPLITUDE RIDGE FROM THE WEST...THUS ALLOWING
TEMPS TO WARM INTO THE LOW TO MID 90S ACROSS THE NORTHERN ZONES TO
UPPER 90S ACROSS THE SOUTH. AT THE SFC...A DRYLINE WILL TAKE
SHAPE...THOUGH THE EXACT SPATIAL DISTRIBUTION OF THE DRYLINE REMAINS
QUESTIONABLE WITH RECENT MODEL RUNS. THE NAM DISPLACES THE DRYLINE
PARALLEL WITH INTERSTATE 27...WHILST THE GFS SHOVES IT EAST OF THE
CAPROCK ESCARPMENT. THE ECMWF MORE OR LESS IS A BLEND OF THE SAID
SOLUTIONS. THE REASON FOR THE DRYLINE WESTWARD BIAS OF THE NAM IS
DUE TO A DEEPENING SFC LOW NW OF THE REGION...THAT IS NOT SHOWN TO
BE AS DEEP PER THE GFS. BY NIGHTFALL...THE DRYLINE RETREATS TO NEAR
THE BORDER AS SHOWN BY THE NAM AND INTERESTINGLY ENOUGH BY THE ECMWF
AS WELL /COURTESY OF PRESSURE FALLS/...VERSUS AN EASTWARD SURGE
PER THE GFS. WILL LEAN TOWARDS THE NAM AND ECMWF SOLUTIONS AS THEY
APPEAR TO HAVE A BETTER HANDLE ON THE STRENGTH OF THE SFC LOW. FOCUS
WILL NOW TURN TO THE POTENTIAL FOR PRECIP. SFC-CONVERGENCE ALONG THE
DRYLINE COMBINED WITH SFC-BASED CAPE OF 2.0-3.0 KJ/KG AND ADEQUATE
0-6 KM BULK SHEAR SUGGEST THE POTENTIAL FOR STRONG TO SEVERE STORMS.
HOWEVER...AS THE UA RIDGE COMMENCE TO MOVE ACROSS THE
REGION...SUBSIDENCE WILL OVERSPREAD THE REGION. PROGGED SOUNDINGS
EXHIBITED A CAP ACROSS EASTERN LOCALES BECAUSE OF THE SAID UA RIDGE.
THE NAM SHOWING A QUICK SHOT OF LIGHT QPF SIGNALS ALONG THE
DRYLINE EARLY EVENING BEFORE QUICKLY DIMINISHING FURTHER ILLUSTRATES
THE POTENTIAL STRENGTH OF THE CAPPING INVERSION /THE GFS IS VOID OF
PRECIP/. WILL MAINTAIN A SLIGHT CHANCE MENTION ACROSS THE CENTRAL
AND EASTERN ZONES DURING THE EVENING-EARLY NIGHT...COINCIDING WITH
SLIGHTLY WEAKER CAP.
FRIDAY...THE UA RIDGE WILL BE TRANSLATING OVERHEAD AND 850 MB TEMPS
IS PROJECTED TO BE A FEW DEGREES HIGHER THAN THURSDAY. AS
SUCH...TEMPS INCREASING INTO THE UPPER TO MID 90S ACROSS THE
CWA...WITH PERHAPS A FEW TRIPLE DIGITS ACROSS THE LOW ROLLING PLAINS
APPEARS VALID /15-20 DEGREES ABOVE NORM/. CONCURRENTLY...A NW
PACIFIC UA DISTURBANCE WILL DIG ESE ACROSS SOUTHERN CALIFORNIA THUS
PROMOTING A VEERING TO SW FLOW ALOFT. SFC WINDS WILL RESPOND BY
VEERING TO THE WSW ON THE CAPROCK AND THEREFORE SHIFTING THE DRYLINE
TO THE ROLLING PLAINS AND FILTERING IN DRIER AIR. THROUGHOUT THE
WEEKEND...THE UA DISTURBANCE WILL PROGRESS EASTWARD ACROSS THE
DESERT SW SATURDAY /FARTHER SOUTH THAN PREVIOUS RUNS/ AND EJECT NE
ACROSS THE PANHANDLES/SOUTH PLAINS SUNDAY MORNING. A 30-35 KT LLJ
COMMENCING FRIDAY NIGHT...WILL TRANSPORT DEWPOINTS INTO THE 40S NW
TO 60S SE SATURDAY MORNING THUS RETREATING THE DRYLINE TO NEAR THE
TEXAS/NEW MEXICO BORDER. HOWEVER AS THE SYSTEM APPROACHES THE
REGION...THE DRYLINE WILL SHARPEN NEAR THE CAPROCK ESCARPMENT
SATURDAY AFTN/EVENING AS BREEZY S TO SW WINDS ENSUE. WITH WELL ABOVE
NORM TEMPS PERSISTING SATURDAY /MID TO UPPER 90S/ FIRE WEATHER CONCERNS
WILL BE ELEVATED. INVERTED-V SOUNDING PROFILES WITH ADEQUATE
SFC-BASED CAPE...A MINIMAL CAP AND DECENT SHEAR SUGGEST THE
POTENTIAL FOR STRONG TO SEVERE STORMS ALONG AND EAST OF THE DRYLINE.
WITH THE SYSTEM NE OF THE CWA ON SUNDAY...BREEZY DOWNSLOPING WINDS
WILL CREATE ANOTHER WARM DAY /LOW TO MID 90S/ AND ANOTHER DAY OF
ELEVATED FIRE WEATHER CONDITIONS. IT WILL ALSO SHIFT THE DRYLINE TO
JUST EAST OF THE ROLLING PLAINS. ANOTHER BROAD UA DISTURBANCE
PROGRESSING EAST ACROSS THE SOUTHERN ROCKIES TO THE CENTRAL TO HIGH
PLAINS WILL SEND DOWN A FROPA MONDAY NIGHT. NO PRECIP IS ANTICIPATED
ATTM...GIVEN DRY DOWNSLOPING WINDS THE PREVIOUS FEW DAYS. NOT MUCH
OF A COOL DOWN WITH THE FROPA...WITH HIGHS GENERALLY IN THE 80S WITH
A FEW 90S BY TUESDAY. SFC WINDS WILL RETURN TO SRLY FLOW TUESDAY
NIGHT...AND THE WARMTH WILL RESUME BY MID-WEEK /UPPER 80S TO LOWER
90S/.
&&
.PRELIMINARY POINT TEMPS/POPS...
FRIONA 58 94 58 96 57 / 10 10 10 0 10
TULIA 59 92 57 98 59 / 20 20 20 0 10
PLAINVIEW 60 96 61 98 62 / 20 20 20 0 10
LEVELLAND 61 97 61 98 63 / 10 10 10 0 10
LUBBOCK 62 98 63 100 66 / 20 20 20 0 10
DENVER CITY 63 97 59 96 62 / 10 10 10 0 10
BROWNFIELD 62 98 60 98 63 / 10 10 10 0 10
CHILDRESS 62 92 65 98 66 / 20 10 20 10 10
SPUR 62 95 62 100 64 / 30 10 20 0 10
ASPERMONT 64 96 64 102 66 / 30 10 20 0 10
&&
.LUB WATCHES/WARNINGS/ADVISORIES...
NONE.
&&
$$
99/99/05
165
FXUS64 KLUB 151059
AFDLUB
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LUBBOCK TX
559 AM CDT WED MAY 15 2013
.AVIATION...
VFR CONDITIONS EXPECTED AT BOTH TERMINALS NEXT 24 HOURS. PRIMARY
AVIATION THREAT WILL BE HIGH BASED VIRGA SHOWERS AT KLBB AND
THUNDERSTORMS AT KCDS THIS AFTERNOON INTO THE EARLY EVENING HOURS.
LOW LEVEL PROFILES ARE SUPPORTIVE OF STRONG DOWNBURST WITH THAT
ACTIVITY. THAT SAID...IT IS HIGHLY RECOMMENDED TO AVOID FLYING
UNDER/NEAR PRECIPITATION ACTIVITY TODAY.
&&
.PREV DISCUSSION... /ISSUED 311 AM CDT WED MAY 15 2013/
SHORT TERM...
UPPER LOW WHICH HAD SAT OVER NORTHWESTERN MEXICO FOR MUCH OF THE
LAST WEEK CONTINUES TO EJECT INTO THE CENTRAL PLAINS EARLY THIS
MORNING. THIS FEATURE HAS BEEN RESPONSIBLE FOR MAINTAINING A REGION
OF RAIN SHOWERS ACROSS THE BIG COUNTRY AND CONCHO VALLEY THIS
MORNING. BY LATE THIS AFTERNOON...LOW MAY ONCE AGAIN CLOSE THOUGH
EFFECTS ON OUR SENSIBLE WEATHER WILL BE MINIMIZED AS NORTHWESTERLY
FLOW WILL PERSIST THROUGH THURSDAY MORNING. THE NAM PORTRAYS A 45KT
LLJ ACROSS OUR REGION EARLY THIS MORNING AND THIS LOOKS ABOUT ON
TARGET PER TTU SODAR DATA FROM REESE/HEREFORD/CHILDRESS.
PRIMARY FCST CHALLENGE REMAINS PROSPECTS FOR TRW ACROSS THE EASTERN
ZONES ONCE AGAIN TODAY. THE DRYLINE LOOKS TO PUSH WELL INTO THE
ROLLING PLAINS AND POSSIBLY EAST OF OUR CWFA WITH DRYLINE BULGE NEAR
STONEWALL COUNTY BEING DEPICTED BY THE MAJOR NWP PLAYERS. THE NAM
IS ONCE AGAIN DEPICTING HIGH BASED CONVECTION BEHIND THE DRYLINE.
AM HAVING A HARD TIME BUYING OFF ON THIS IDEA GIVEN OUR LOCATION OF
THE SUBSIDENT SIDE OF THE UPPER LOW. HOWEVER...THERE WILL EXIST
SOME MID LEVEL MOISTURE AND WILL MAKE MENTION OF ISOLATED T OUT WEST
WHILE MAINTAINING SCHC ACROSS THE ROLLING PLAINS. GIVEN CAPE IN
EXCESS OF 3KJ/KG AND SINCE IT IS MAY AFTER ALL...SOME STRONG TO
POSSIBLY SEVERE STORMS WILL BE POSSIBLE EAST. GOLF BALL HAIL AND
WINDS TO 60+ MPH WILL CERTAINLY BE POSSIBLE THOUGH A WIDESPREAD
EVENT IS NOT EXPECTED. AFTER THE LOSS OF DAYTIME HEATING...THINGS
SHOULD QUIET DOWN ONCE AGAIN.
LONG TERM...
THE OPEN WAVE DISTURBANCE THAT IS PROGRESSING NE ACROSS THE SOUTHERN
PLAINS EARLY THIS MORNING...WILL BE NEARING THE CENTRAL MISSISSIPPI
VALLEY AT THE START OF THE EXTENDED PERIOD. THURSDAY WILL BE
CHARACTERIZED BY AN UPTICK IN MID-UPPER LEVEL THICKNESS VALUES DUE
TO AN APPROACHING LOW AMPLITUDE RIDGE FROM THE WEST...THUS ALLOWING
TEMPS TO WARM INTO THE LOW TO MID 90S ACROSS THE NORTHERN ZONES TO
UPPER 90S ACROSS THE SOUTH. AT THE SFC...A DRYLINE WILL TAKE
SHAPE...THOUGH THE EXACT SPATIAL DISTRIBUTION OF THE DRYLINE REMAINS
QUESTIONABLE WITH RECENT MODEL RUNS. THE NAM DISPLACES THE DRYLINE
PARALLEL WITH INTERSTATE 27...WHILST THE GFS SHOVES IT EAST OF THE
CAPROCK ESCARPMENT. THE ECMWF MORE OR LESS IS A BLEND OF THE SAID
SOLUTIONS. THE REASON FOR THE DRYLINE WESTWARD BIAS OF THE NAM IS
DUE TO A DEEPENING SFC LOW NW OF THE REGION...THAT IS NOT SHOWN TO
BE AS DEEP PER THE GFS. BY NIGHTFALL...THE DRYLINE RETREATS TO NEAR
THE BORDER AS SHOWN BY THE NAM AND INTERESTINGLY ENOUGH BY THE ECMWF
AS WELL /COURTESY OF PRESSURE FALLS/...VERSUS AN EASTWARD SURGE
PER THE GFS. WILL LEAN TOWARDS THE NAM AND ECMWF SOLUTIONS AS THEY
APPEAR TO HAVE A BETTER HANDLE ON THE STRENGTH OF THE SFC LOW. FOCUS
WILL NOW TURN TO THE POTENTIAL FOR PRECIP. SFC-CONVERGENCE ALONG THE
DRYLINE COMBINED WITH SFC-BASED CAPE OF 2.0-3.0 KJ/KG AND ADEQUATE
0-6 KM BULK SHEAR SUGGEST THE POTENTIAL FOR STRONG TO SEVERE STORMS.
HOWEVER...AS THE UA RIDGE COMMENCE TO MOVE ACROSS THE
REGION...SUBSIDENCE WILL OVERSPREAD THE REGION. PROGGED SOUNDINGS
EXHIBITED A CAP ACROSS EASTERN LOCALES BECAUSE OF THE SAID UA RIDGE.
THE NAM SHOWING A QUICK SHOT OF LIGHT QPF SIGNALS ALONG THE
DRYLINE EARLY EVENING BEFORE QUICKLY DIMINISHING FURTHER ILLUSTRATES
THE POTENTIAL STRENGTH OF THE CAPPING INVERSION /THE GFS IS VOID OF
PRECIP/. WILL MAINTAIN A SLIGHT CHANCE MENTION ACROSS THE CENTRAL
AND EASTERN ZONES DURING THE EVENING-EARLY NIGHT...COINCIDING WITH
SLIGHTLY WEAKER CAP.
FRIDAY...THE UA RIDGE WILL BE TRANSLATING OVERHEAD AND 850 MB TEMPS
IS PROJECTED TO BE A FEW DEGREES HIGHER THAN THURSDAY. AS
SUCH...TEMPS INCREASING INTO THE UPPER TO MID 90S ACROSS THE
CWA...WITH PERHAPS A FEW TRIPLE DIGITS ACROSS THE LOW ROLLING PLAINS
APPEARS VALID /15-20 DEGREES ABOVE NORM/. CONCURRENTLY...A NW
PACIFIC UA DISTURBANCE WILL DIG ESE ACROSS SOUTHERN CALIFORNIA THUS
PROMOTING A VEERING TO SW FLOW ALOFT. SFC WINDS WILL RESPOND BY
VEERING TO THE WSW ON THE CAPROCK AND THEREFORE SHIFTING THE DRYLINE
TO THE ROLLING PLAINS AND FILTERING IN DRIER AIR. THROUGHOUT THE
WEEKEND...THE UA DISTURBANCE WILL PROGRESS EASTWARD ACROSS THE
DESERT SW SATURDAY /FARTHER SOUTH THAN PREVIOUS RUNS/ AND EJECT NE
ACROSS THE PANHANDLES/SOUTH PLAINS SUNDAY MORNING. A 30-35 KT LLJ
COMMENCING FRIDAY NIGHT...WILL TRANSPORT DEWPOINTS INTO THE 40S NW
TO 60S SE SATURDAY MORNING THUS RETREATING THE DRYLINE TO NEAR THE
TEXAS/NEW MEXICO BORDER. HOWEVER AS THE SYSTEM APPROACHES THE
REGION...THE DRYLINE WILL SHARPEN NEAR THE CAPROCK ESCARPMENT
SATURDAY AFTN/EVENING AS BREEZY S TO SW WINDS ENSUE. WITH WELL ABOVE
NORM TEMPS PERSISTING SATURDAY /MID TO UPPER 90S/ FIRE WEATHER CONCERNS
WILL BE ELEVATED. INVERTED-V SOUNDING PROFILES WITH ADEQUATE
SFC-BASED CAPE...A MINIMAL CAP AND DECENT SHEAR SUGGEST THE
POTENTIAL FOR STRONG TO SEVERE STORMS ALONG AND EAST OF THE DRYLINE.
WITH THE SYSTEM NE OF THE CWA ON SUNDAY...BREEZY DOWNSLOPING WINDS
WILL CREATE ANOTHER WARM DAY /LOW TO MID 90S/ AND ANOTHER DAY OF
ELEVATED FIRE WEATHER CONDITIONS. IT WILL ALSO SHIFT THE DRYLINE TO
JUST EAST OF THE ROLLING PLAINS. ANOTHER BROAD UA DISTURBANCE
PROGRESSING EAST ACROSS THE SOUTHERN ROCKIES TO THE CENTRAL TO HIGH
PLAINS WILL SEND DOWN A FROPA MONDAY NIGHT. NO PRECIP IS ANTICIPATED
ATTM...GIVEN DRY DOWNSLOPING WINDS THE PREVIOUS FEW DAYS. NOT MUCH
OF A COOL DOWN WITH THE FROPA...WITH HIGHS GENERALLY IN THE 80S WITH
A FEW 90S BY TUESDAY. SFC WINDS WILL RETURN TO SRLY FLOW TUESDAY
NIGHT...AND THE WARMTH WILL RESUME BY MID-WEEK /UPPER 80S TO LOWER
90S/.
&&
.PRELIMINARY POINT TEMPS/POPS...
FRIONA 91 58 94 58 96 / 10 10 10 10 0
TULIA 92 59 92 59 98 / 10 10 10 20 0
PLAINVIEW 93 60 96 62 98 / 10 10 10 20 0
LEVELLAND 91 61 97 62 98 / 10 10 10 10 0
LUBBOCK 93 62 98 64 100 / 10 10 10 20 0
DENVER CITY 90 63 97 62 96 / 10 10 0 10 0
BROWNFIELD 90 62 98 62 98 / 10 10 10 10 0
CHILDRESS 89 62 92 64 98 / 20 20 10 20 10
SPUR 93 62 95 63 100 / 20 20 10 20 0
ASPERMONT 90 64 96 65 102 / 20 20 10 20 0
&&
.LUB WATCHES/WARNINGS/ADVISORIES...
NONE.
&&
$$
99/99/26
749
FXUS64 KLUB 150811
AFDLUB
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LUBBOCK TX
311 AM CDT WED MAY 15 2013
.SHORT TERM...
UPPER LOW WHICH HAD SAT OVER NORTHWESTERN MEXICO FOR MUCH OF THE
LAST WEEK CONTINUES TO EJECT INTO THE CENTRAL PLAINS EARLY THIS
MORNING. THIS FEATURE HAS BEEN RESPONSIBLE FOR MAINTAINING A REGION
OF RAIN SHOWERS ACROSS THE BIG COUNTRY AND CONCHO VALLEY THIS
MORNING. BY LATE THIS AFTERNOON...LOW MAY ONCE AGAIN CLOSE THOUGH
EFFECTS ON OUR SENSIBLE WEATHER WILL BE MINIMIZED AS NORTHWESTERLY
FLOW WILL PERSIST THROUGH THURSDAY MORNING. THE NAM PORTRAYS A 45KT
LLJ ACROSS OUR REGION EARLY THIS MORNING AND THIS LOOKS ABOUT ON
TARGET PER TTU SODAR DATA FROM REESE/HEREFORD/CHILDRESS.
PRIMARY FCST CHALLENGE REMAINS PROSPECTS FOR TRW ACROSS THE EASTERN
ZONES ONCE AGAIN TODAY. THE DRYLINE LOOKS TO PUSH WELL INTO THE
ROLLING PLAINS AND POSSIBLY EAST OF OUR CWFA WITH DRYLINE BULGE NEAR
STONEWALL COUNTY BEING DEPICTED BY THE MAJOR NWP PLAYERS. THE NAM
IS ONCE AGAIN DEPICTING HIGH BASED CONVECTION BEHIND THE DRYLINE.
AM HAVING A HARD TIME BUYING OFF ON THIS IDEA GIVEN OUR LOCATION OF
THE SUBSIDENT SIDE OF THE UPPER LOW. HOWEVER...THERE WILL EXIST
SOME MID LEVEL MOISTURE AND WILL MAKE MENTION OF ISOLATED T OUT WEST
WHILE MAINTAINING SCHC ACROSS THE ROLLING PLAINS. GIVEN CAPE IN
EXCESS OF 3KJ/KG AND SINCE IT IS MAY AFTER ALL...SOME STRONG TO
POSSIBLY SEVERE STORMS WILL BE POSSIBLE EAST. GOLF BALL HAIL AND
WINDS TO 60+ MPH WILL CERTAINLY BE POSSIBLE THOUGH A WIDESPREAD
EVENT IS NOT EXPECTED. AFTER THE LOSS OF DAYTIME HEATING...THINGS
SHOULD QUIET DOWN ONCE AGAIN.
&&
.LONG TERM...
THE OPEN WAVE DISTURBANCE THAT IS PROGRESSING NE ACROSS THE SOUTHERN
PLAINS EARLY THIS MORNING...WILL BE NEARING THE CENTRAL MISSISSIPPI
VALLEY AT THE START OF THE EXTENDED PERIOD. THURSDAY WILL BE
CHARACTERIZED BY AN UPTICK IN MID-UPPER LEVEL THICKNESS VALUES DUE
TO AN APPROACHING LOW AMPLITUDE RIDGE FROM THE WEST...THUS ALLOWING
TEMPS TO WARM INTO THE LOW TO MID 90S ACROSS THE NORTHERN ZONES TO
UPPER 90S ACROSS THE SOUTH. AT THE SFC...A DRYLINE WILL TAKE
SHAPE...THOUGH THE EXACT SPATIAL DISTRIBUTION OF THE DRYLINE REMAINS
QUESTIONABLE WITH RECENT MODEL RUNS. THE NAM DISPLACES THE DRYLINE
PARALLEL WITH INTERSTATE 27...WHILST THE GFS SHOVES IT EAST OF THE
CAPROCK ESCARPMENT. THE ECMWF MORE OR LESS IS A BLEND OF THE SAID
SOLUTIONS. THE REASON FOR THE DRYLINE WESTWARD BIAS OF THE NAM IS
DUE TO A DEEPENING SFC LOW NW OF THE REGION...THAT IS NOT SHOWN TO
BE AS DEEP PER THE GFS. BY NIGHTFALL...THE DRYLINE RETREATS TO NEAR
THE BORDER AS SHOWN BY THE NAM AND INTERESTINGLY ENOUGH BY THE ECMWF
AS WELL /COURTESY OF PRESSURE FALLS/...VERSUS AN EASTWARD SURGE
PER THE GFS. WILL LEAN TOWARDS THE NAM AND ECMWF SOLUTIONS AS THEY
APPEAR TO HAVE A BETTER HANDLE ON THE STRENGTH OF THE SFC LOW. FOCUS
WILL NOW TURN TO THE POTENTIAL FOR PRECIP. SFC-CONVERGENCE ALONG THE
DRYLINE COMBINED WITH SFC-BASED CAPE OF 2.0-3.0 KJ/KG AND ADEQUATE
0-6 KM BULK SHEAR SUGGEST THE POTENTIAL FOR STRONG TO SEVERE STORMS.
HOWEVER...AS THE UA RIDGE COMMENCE TO MOVE ACROSS THE
REGION...SUBSIDENCE WILL OVERSPREAD THE REGION. PROGGED SOUNDINGS
EXHIBITED A CAP ACROSS EASTERN LOCALES BECAUSE OF THE SAID UA RIDGE.
THE NAM SHOWING A QUICK SHOT OF LIGHT QPF SIGNALS ALONG THE
DRYLINE EARLY EVENING BEFORE QUICKLY DIMINISHING FURTHER ILLUSTRATES
THE POTENTIAL STRENGTH OF THE CAPPING INVERSION /THE GFS IS VOID OF
PRECIP/. WILL MAINTAIN A SLIGHT CHANCE MENTION ACROSS THE CENTRAL
AND EASTERN ZONES DURING THE EVENING-EARLY NIGHT...COINCIDING WITH
SLIGHTLY WEAKER CAP.
FRIDAY...THE UA RIDGE WILL BE TRANSLATING OVERHEAD AND 850 MB TEMPS
IS PROJECTED TO BE A FEW DEGREES HIGHER THAN THURSDAY. AS
SUCH...TEMPS INCREASING INTO THE UPPER TO MID 90S ACROSS THE
CWA...WITH PERHAPS A FEW TRIPLE DIGITS ACROSS THE LOW ROLLING PLAINS
APPEARS VALID /15-20 DEGREES ABOVE NORM/. CONCURRENTLY...A NW
PACIFIC UA DISTURBANCE WILL DIG ESE ACROSS SOUTHERN CALIFORNIA THUS
PROMOTING A VEERING TO SW FLOW ALOFT. SFC WINDS WILL RESPOND BY
VEERING TO THE WSW ON THE CAPROCK AND THEREFORE SHIFTING THE DRYLINE
TO THE ROLLING PLAINS AND FILTERING IN DRIER AIR. THROUGHOUT THE
WEEKEND...THE UA DISTURBANCE WILL PROGRESS EASTWARD ACROSS THE
DESERT SW SATURDAY /FARTHER SOUTH THAN PREVIOUS RUNS/ AND EJECT NE
ACROSS THE PANHANDLES/SOUTH PLAINS SUNDAY MORNING. A 30-35 KT LLJ
COMMENCING FRIDAY NIGHT...WILL TRANSPORT DEWPOINTS INTO THE 40S NW
TO 60S SE SATURDAY MORNING THUS RETREATING THE DRYLINE TO NEAR THE
TEXAS/NEW MEXICO BORDER. HOWEVER AS THE SYSTEM APPROACHES THE
REGION...THE DRYLINE WILL SHARPEN NEAR THE CAPROCK ESCARPMENT
SATURDAY AFTN/EVENING AS BREEZY S TO SW WINDS ENSUE. WITH WELL ABOVE
NORM TEMPS PERSISTING SATURDAY /MID TO UPPER 90S/ FIRE WEATHER CONCERNS
WILL BE ELEVATED. INVERTED-V SOUNDING PROFILES WITH ADEQUATE
SFC-BASED CAPE...A MINIMAL CAP AND DECENT SHEAR SUGGEST THE
POTENTIAL FOR STRONG TO SEVERE STORMS ALONG AND EAST OF THE DRYLINE.
WITH THE SYSTEM NE OF THE CWA ON SUNDAY...BREEZY DOWNSLOPING WINDS
WILL CREATE ANOTHER WARM DAY /LOW TO MID 90S/ AND ANOTHER DAY OF
ELEVATED FIRE WEATHER CONDITIONS. IT WILL ALSO SHIFT THE DRYLINE TO
JUST EAST OF THE ROLLING PLAINS. ANOTHER BROAD UA DISTURBANCE
PROGRESSING EAST ACROSS THE SOUTHERN ROCKIES TO THE CENTRAL TO HIGH
PLAINS WILL SEND DOWN A FROPA MONDAY NIGHT. NO PRECIP IS ANTICIPATED
ATTM...GIVEN DRY DOWNSLOPING WINDS THE PREVIOUS FEW DAYS. NOT MUCH
OF A COOL DOWN WITH THE FROPA...WITH HIGHS GENERALLY IN THE 80S WITH
A FEW 90S BY TUESDAY. SFC WINDS WILL RETURN TO SRLY FLOW TUESDAY
NIGHT...AND THE WARMTH WILL RESUME BY MID-WEEK /UPPER 80S TO LOWER
90S/.
&&
.PRELIMINARY POINT TEMPS/POPS...
FRIONA 91 58 94 58 96 / 10 10 10 10 0
TULIA 92 59 92 59 98 / 10 10 10 20 0
PLAINVIEW 93 60 96 62 98 / 10 10 10 20 0
LEVELLAND 91 61 97 62 98 / 10 10 10 10 0
LUBBOCK 93 62 98 64 100 / 10 10 10 20 0
DENVER CITY 90 63 97 62 96 / 10 10 0 10 0
BROWNFIELD 90 62 98 62 98 / 10 10 10 10 0
CHILDRESS 89 62 92 64 98 / 20 20 10 20 10
SPUR 93 62 95 63 100 / 20 20 10 20 0
ASPERMONT 90 64 96 65 102 / 20 20 10 20 0
&&
.LUB WATCHES/WARNINGS/ADVISORIES...
NONE.
&&
$$
26/29
978
FXUS64 KLUB 150457 AAB
AFDLUB
AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE LUBBOCK TX
1157 PM CDT TUE MAY 14 2013
.AVIATION...
THIS EVENINGS STORMS HAVE DISSIPATED LEAVING BEHIND VFR CONDITIONS
THAT WILL LAST THROUGH THIS TAF CYCLE. STILL REMAINS SOME
UNCERTAINTY IF WE WILL SEE ANOTHER ROUND OF STORMS NEAR KLBB
TERMINAL...HOWEVER ENOUGH CONFIDENCE IS IN PLACE FOR KCDS TO
INCLUDE PROB30 GROUP AT THIS TIME. ANY STORMS WILL DISSIPATE AFTER
SUNSET AT BOTH TERMINALS.
JORDAN
&&
.PREV DISCUSSION... /ISSUED 636 PM CDT TUE MAY 14 2013/
AVIATION...
VFR CONDITIONS ARE IN PLACE AT BOTH TERMINALS AND SHOULD REMAIN SO
THROUGH THIS TAF CYCLE. ISOLATED THUNDERSTORMS WILL REMAIN WITHIN
THE VCTS RANGE OF KLBB FOR THE FIRST TWO HOURS OF THE TAF BUT
SHOULD DISSIPATE AROUND SUNSET. NO PRECIPITATION IS EXPECTED
OVERNIGHT AND THROUGH THE MORNING HOURS TOMORROW...HOWEVER CHANCES
ARE IMPROVING THAT KCDS COULD SEE TSRA AT THE TERMINAL TOMORROW
AFTERNOON. TIMING REMAINS UNCERTAIN AND WILL HOLD WITH A CB IN THE
CLOUD GROUP FOR NOW.
JORDAN
PREV DISCUSSION... /ISSUED 340 PM CDT TUE MAY 14 2013/
SHORT TERM...
BROAD WEAK TROUGHINESS WITH A MODEST INCREASE IN MID-LEVEL MOISTURE
CONTINUES TO GRADUALLY EXPAND EAST-NORTHEAST INTO THE SOUTHERN PART
OF THE SOUTH PLAINS...A BIT FURTHER WEST THAN EARLIER ANTICIPATED.
EXPECT THIS TO SPREAD OVER THE ROLLING PLAINS EARLY THIS EVENING.
AIRMASS MIXING FULLY NOW AND DEVELOPING HIGH-BASED CUMULUS FIELD
THAT WILL ONLY LIFT HIGHER LATER IN THE DAY. JUST ENOUGH LIFT AND
CAPE FOR A LOW CHANCE OF HIGH-BASED SHOWERS AND THUNDER PERSISTING A
FEW HOURS INTO THE EARLY EVENING BEFORE DISSIPATING WITH LOSS OF
HEATING ALTHOUGH THE DRIER LOWER ATMOSPHERE OBVIOUSLY WILL MAKE RAIN
COVERAGE VERY LIMITED WHILE ALSO INCREASING CHANCE FOR A FEW STRONG
WIND GUSTS AS COVERED BY THE LATEST HAZARDOUS WEATHER OUTLOOK.
THE REMAINDER OF THE NIGHT WILL SEE A SURGE NORTHWEST OF THE
DRY-LINE ALONG WITH DEVELOPMENT OF A MODEST LOW LEVEL JET. THIS
SHOULD SET THE MOISTURE BOUNDARY CORRESPONDINGLY WESTWARD BY
WEDNESDAY AFTERNOON...PERHAPS CLOSE TO CAP-ROCK ESCARPMENT IF NOT
EVEN ONTO IT ACROSS NORTHEASTERN SOUTH PLAINS ALTHOUGH SURFACE FLOW
FORECAST REMAINS MUCH MORE BACKED PER THE WRF/NAM SOLUTION LATE
WEDNESDAY VERSUS THE LESS BACKED GFS. WE CHOSE TO BLEND WITH SLIGHT
LEAN TOWARDS THE LATEST WRF/NAM. UPPER TROUGH SHOULD BE JUST TO THE
EAST...ALTHOUGH THE AREA WILL STILL BE WITHIN THE BACK-SIDE OF THE
BROAD TROUGHINESS REGION IN NORTH-NORTHWEST FLOW ALOFT PERHAPS WITH A
MINOR PERTURBATION OR TWO DROPPING OVER THE AREA. THIS SHOULD BE
SUFFICIENT FOR LOW MENTION OF HIGH-BASED THUNDER OVER MOST AREAS ON
THE CAP-ROCK WITH A BETTER CHANCE ALONG AND EAST OF THE CAP-ROCK.
SEVERE THREAT WEDNESDAY ALSO SHOULD BE HIGHER NEAR AND EAST OF THE
DRY-LINE. MILD TEMPERATURES LIKELY TONIGHT AND WEDNESDAY WITH MINOR
CHANGES FROM PREVIOUS FORECAST. RMCQUEEN
LONG TERM...
TOASTY TEMPERATURES ALONG WITH A FEW WINDOWS OF LOW THUNDER CHANCES
PUNCTUATE THE EXTENDED.
THE UPPER LOW/TROUGH THAT HAS LINGERED TO OUR SOUTHWEST FOR SOME
TIME WILL BE EXITING TO THE EAST AT THE OPEN OF THE EXTENDED
WEDNESDAY EVENING. THIS WILL LEAVE A SHORTWAVE RIDGE IN ITS
WAKE...THOUGH A WEAK DISTURBANCE IS PROGGED TO PENETRATE THROUGH THE
RIDGE ACROSS THE CENTRAL AND SOUTHERN ROCKIES THURSDAY. AT THE
SFC...THERE REMAINS A FAIR AMOUNT OF QUESTION WHERE THE DRYLINE WILL
BE LOCATED BY THURSDAY AFTERNOON...WITH THE 12Z NAM BEING THE
FARTHEST WEST NEAR THE I-27/US-87 CORRIDOR AT PEAK
HEATING/MIXING...WHILE THE 12Z GFS ONLY HOLDS THE MOISTURE IN THE
FAR NORTHEASTERN ZONES. GIVEN THE WEAK DISTURBANCE CRESTING THE
RIDGE AND PRESSURE FALLS TO THE NORTHWEST AND THE OFTEN EASTWARD
BIAS OF THE GFS WITH THE DRYLINE...HAVE LEANED STRONGLY TOWARD THE
NAM IN THE GRIDDED FORECAST. TEMPERATURES ALOFT WILL WARM...BUT SO
WILL SFC TEMPERATURES WITH HIGHS EXPECTED TO CLIMB WELL INTO THE 90S
ON THE CAPROCK...AND THIS COUPLED WITH CONVERGENCE ALONG THE DRYLINE
MAY BE ENOUGH TO TRIGGER ISOLATED CONVECTION. IT DOES APPEAR THE CAP
WILL BE FAIRLY STRONG EAST OF THE DRYLINE SO IT MAY BE A FAIRLY
NARROW CORRIDOR WHERE CONVECTION COULD BE MAINTAINED...BUT GIVEN THE
UNCERTAINTY IN THE ULTIMATE DRYLINE POSITION...HAVE CHOSEN TO
BLANKET THE CENTRAL AND EASTERN ZONES WITH A LOW THUNDER MENTION.
STRONG INSTABILITY AND MODEST DEEP LAYER SHEAR WOULD ALSO SUPPORT A
SEVERE THREAT IF SFC BASED CONVECTION CAN BECOME ROOTED.
THE DRYLINE WILL THEN PUSH FURTHER TO THE EAST ON FRIDAY AS
THURSDAY/S DISTURBANCE TRANSLATES OFF TO THE NORTHEAST AND A TROUGH
MAKES HEADWAY INTO THE WEST. DRY SOUTHWESTERLY BREEZES AND 850 MB
TEMPERATURES CLIMBING TO AROUND 30C ALL POINT TO A HOT DAY...WITH
HIGHS IN THE MID AND UPPER 90S COMMON /PERHAPS EVEN A FEW TRIPLE
DIGITS/.
MOISTURE WILL THEN BRIEFLY RETURN FRIDAY NIGHT AS THE WESTERN TROUGH
DRAWS CLOSER AND HEIGHTS BEGIN TO FALL TO OUR WEST.
HOWEVER...DEEPENING/STRENGTHENING SOUTHWESTERLY FLOW WILL LIKELY
SHUNT THE DRYLINE INTO THE ROLLING PLAINS DURING THE
AFTERNOON...WHERE IT MAY BE THE FOCUS FOR LATE DAY STRONG/SEVERE
CONVECTION. WEST OF THE DRYLINE...GUSTY SOUTHWESTERLY WINDS WILL
ALSO ELEVATE THE FIRE DANGER EVEN THOUGH MINOR COOLING MAY BE
REALIZED AS THICKNESSES DROP SLIGHTLY. THE INITIAL UPPER TROUGH AXIS
IS THEN EXPECTED TO PASS EARLY SUNDAY WITH DRY AND WARM WESTERLY
FLOW KEEPING TEMPERATURES WELL ABOVE AVERAGE AND THE FIRE DANGER
ELEVATED. A WEAK COLD FRONT MAY FOLLOW THE TROUGH PASSAGE...THOUGH
THE LATEST INDICATIONS ARE THAT THE BETTER PUSH WITH THIS FRONT MAY
HOLD OFF UNTIL MONDAY NIGHT. REGARDLESS...A RELATIVE LACK OF
LOW-LEVEL MOISTURE WILL KEEP POPS MINIMAL FROM SUNDAY INTO EARLY
NEXT WEEK.
&&
.PRELIMINARY POINT TEMPS/POPS...
FRIONA 55 90 55 94 58 / 10 20 20 10 10
TULIA 58 92 58 92 60 / 10 20 20 20 20
PLAINVIEW 59 91 60 96 62 / 10 20 20 20 20
LEVELLAND 60 92 60 97 62 / 10 20 20 10 10
LUBBOCK 61 92 63 98 64 / 10 20 20 20 20
DENVER CITY 61 92 62 97 62 / 10 10 10 10 10
BROWNFIELD 61 92 62 98 62 / 10 20 20 10 10
CHILDRESS 64 91 64 92 64 / 10 30 20 20 20
SPUR 61 93 61 95 63 / 10 20 20 20 20
ASPERMONT 64 92 64 96 66 / 20 30 20 20 20
&&
.LUB WATCHES/WARNINGS/ADVISORIES...
NONE.
&&
$$
99/99/99
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