Area Forecast Discussion
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885
FXUS64 KLUB 312035
AFDLUB

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LUBBOCK TX
335 PM CDT TUE MAR 31 2015

.SHORT TERM...
NOT MUCH OF A CUMULUS FIELD YET THIS AFTN WITH VISIBLE IMAGERY
SHOWING SOME WEST OF LUBBOCK TOWARD BOTH CLOVIS AND HOBBS.
ENVIRONMENT IS ONE THAT IS WEAKLY FORCED WITH THE MAIN LIFT
ASSOCIATED WITH A LOW OVER THE GULF OF CALIFORNIA OCCURRING OVER
NERN SONORA AND NRN CHIHUAHUA. AT THE SFC A WEAK LOW REMAINS
ACROSS THE SOUTH CENTRAL PANHANDLE BUT WILL LIFT SLOWLY NORTH WITH
TIME. DRY AIR HAS WORKED INTO AREAS TO THE WEST AND SOUTHWEST OF
THE LOW WHILE MODEST SOUTH WINDS HELPING KEEP LOW TO MID 50S DEW
POINTS ACROSS THE SRN ROLLING PLAINS. MEANWHILE A FIELD OF THICK
CIRRUS HAS BEGUN TO MOVE OVER THE SRN PART OF THE FCST AREA AND
SHOULD CONTINUE TO SPREAD TO THE NORTHEAST THRU THE EVENING.
MESOANALYSIS SHOWS MLCAPE LINGERING NEAR VALUES OF 1500 J/KG SERN
ZONES ALTHOUGH CIN ON THE ORDER OF 50-100 J/KG. REAL DOUBT HOW
MUCH THE CAP WILL BE ERODED WITH THE THICKENING CIRRUS AS WELL AS
THE DIURNAL HALT TO TEMP INCREASE NOT TOO FAR AWAY. WITH OBVIOUS
WEAK FORCING HARD TO SEE MUCH IN THE WAY OF CONVECTIVE
ACTIVITY...IN LINE WITH RECENT HI-RES RUNS. BEST CHANCE FOR PRECIP
TO REACH THE GROUND WILL BE SERN ZONES AND WILL LIMIT SLIGHT
CHANCE MENTION TO THAT AREA THIS EVENING. AS THE LOW MOVES OUT
ACROSS SW TEXAS TONIGHT COULD SEE SOME SHOWER OR THUNDER ACTIVITY
MOVE INTO THE SERN ZONES AND WILL KEEP THAT MENTION AS WELL.

WEDNESDAY SHOULD SEE A BETTER DEFINED DRYLINE MOVE EASTWARD ACROSS
THE FCST AREA TO A LOCATION NEAR THE CAPROCK ESCARPMENT BY MID-
AFTN...BUT AGAIN QUALITY OF MOISTURE AND ABILITY TO ERODE THE CAP
THE BIGGEST QUESTIONS ATTM. BETTER INDICATIONS FOR THUNDER
DEVELOPMENT FURTHER NORTH FROM THE ERN PANHANDLE NWD INTO THE CNTL
HIGH PLAINS WITH THE PASSING OF AN UPPER TROUGH. TEMPS WILL BE
WARM AGAIN...IN LINE WITH HIGH TEMPS THIS AFTN.

.LONG TERM...
DRY CONDITIONS SHOULD PREVAIL WEDNESDAY EVENING IN WAKE OF THE
PREVIOUSLY MENTIONED UPPER DISTURBANCE. DEEP WESTERLY FLOW WILL SET
UP FOR THURSDAY AHEAD OF A SHORTWAVE TROUGH MOVING OUT OF THE GREAT
BASIN TOWARD THE FOUR CORNERS REGION...SUBSEQUENTLY PRIMING A
DRY...HOT...AND WINDY DAY. BASE OF THIS FEATURE REMAINING NEAR OR
WEST OF THE FRONT RANGE THROUGH PEAK HEATING WILL KEEP WIND SPEEDS
AT BAY COMPARED TO A POSITIONING NEAR WESTERN KANSAS BY MID-LATE
AFTERNOON...BUT SPEEDS STILL LOOK TO BE IN THE 15-25 MPH RANGE. THIS
STRONG DOWNSLOPE FLOW AND INSOLATION SHOULD ALLOW TEMPERATURES TO
RISE INTO THE 80S AND 90S AS CRITICAL FIRE WEATHER CONDITIONS TAKE
SHAPE /PLEASE SEE FIRE WEATHER SECTION BELOW/.

4 CORNERS SYSTEM WILL PASS NORTH OF THE TEXAS PANHANDLE EARLY
FRIDAY...DRIVING A COLD FRONT THROUGH THE REGION. NORTHERLY WINDS OF
NEAR 15-20 MPH...SOME LOW STRATUS...AND COOLER TEMPERATURES MAINLY
IN THE 60S LOOK TO BE THE IMPACTS FROM THIS SYSTEM AS DEEP LAYER
MOISTURE LOOKS FAR TOO ANEMIC TO WARRANT PRECIPITATION CHANCES.
WINDS WILL VEER SOUTHERLY SATURDAY AS RETURN FLOW ATTEMPTS TO
DEVELOP LOCALLY WITH AT LEAST SOME DEGREE OF BACKING FLOW ALOFT.
KEPT A SLIM MENTION OF STORMS IN THE ROLLING PLAINS AND FAR
SOUTHEASTERN PANHANDLE SATURDAY NIGHT/EARLY SUNDAY WITH A POTENTIAL
EMBEDDED DISTURBANCE APPROACHING IN THE INCREASING SOUTHWESTERLY
FLOW...BUT MAY BE ABLE TO EVENTUALLY PULL THIS ALTOGETHER UNLESS A
BETTER SIGNAL COMES OUT IN SUBSEQUENT SHIFTS.

FLOW WILL FURTHER BACK/STRENGTHEN SUNDAY DOWNSTREAM OF A PACIFIC
NORTHWEST UPPER LOW AS SURFACE TROUGHING IN THE FRONT RANGE LIKELY
KEEPS THE DRYLINE EAST OF THE ROLLING PLAINS. WILL THEREFORE
MAINTAIN A DRY FORECAST BEYOND SUNDAY FOR NOW AS TEMPERATURES WARM
BACK INTO THE 80S FOR EARLY NEXT WEEK. A FRONTAL BOUNDARY MAY THEN
ATTEMPT TO PUSH INTO THE SOUTH PLAINS AROUND MIDWEEK.

.FIRE WEATHER...
ELEVATED TO CRITICAL FIRE WEATHER CONDITIONS WILL DEVELOP
WEDNESDAY AFTERNOON WEST OF THE CAPROCK ESCARPMENT AS MINIMUM
RELATIVE HUMIDITY VALUES FALL INTO THE MID TEENS WITH SOUTHWEST
WINDS OF 10-15 MPH. THURSDAY WILL LIKELY BRING CRITICAL FIRE
WEATHER CONDITIONS ACROSS MOST OF THE CAPROCK WITH ELEVATED TO
CRITICAL CONDITIONS IN THE ROLLING PLAINS AS WARMER AND WINDIER
CONDITIONS TAKE SHAPE. WILL CONTINUE TO MONITOR TRENDS AND ASSESS
POTENTIAL FOR A FIRE WEATHER WATCH.

&&

.PRELIMINARY POINT TEMPS/POPS...
FRIONA        47  85  47  82 /  10   0   0   0
TULIA         53  86  50  83 /  10  10  10   0
PLAINVIEW     53  86  50  84 /  10  10   0   0
LEVELLAND     53  86  51  87 /  10   0   0   0
LUBBOCK       55  87  54  88 /  10  10   0   0
DENVER CITY   54  85  52  85 /  10   0   0   0
BROWNFIELD    54  85  52  87 /  10   0   0   0
CHILDRESS     58  89  57  86 /  20  10  10   0
SPUR          57  87  57  90 /  20  10   0   0
ASPERMONT     61  87  64  92 /  20  10  10   0

&&

.LUB WATCHES/WARNINGS/ADVISORIES...
NONE.
&&

$$

07/31

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