Area Forecast Discussion
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889
FXUS64 KLUB 312338
AFDLUB

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LUBBOCK TX
637 PM CDT FRI OCT 31 2014

.AVIATION...
VFR WILL PERSIST THROUGH THE TAF CYCLE THOUGH AN INCREASE IN
MID-LEVEL CLOUDINESS WILL OCCUR /IN ADDITION TO THE HIGH CLOUDS
ALREADY PRESENT/...ESPECIALLY ON SATURDAY. LIGHT EASTERLY WINDS
TONIGHT WILL VEER AROUND TO THE SOUTH ON SATURDAY...BECOMING
MODESTLY BREEZY DURING THE AFTERNOON.

&&

.PREV DISCUSSION... /ISSUED 306 PM CDT FRI OCT 31 2014/

SHORT TERM...
CHILLY 1037MB SURFACE HIGH POISED NEAR SIOUX FALLS/SD AT 19Z
CONTINUED TO OOZE VERY DRY AIR SOUTHWARD INTO THE TX PANHANDLE AND
MUCH OF OKLAHOMA. IN KANSAS...EARLY AFTERNOON TEMPS IN THE 40S UNDER
FULL SUN ARE A GOOD TESTAMENT TO THIS UNSEASONABLY COOL AIR MASS.
FORTUNATELY FOR OUR FORECAST AREA...THE SURFACE PRESSURE RIDGE WILL
SHIFT EAST OF THE REGION BY THE WITCHING HOUR AND THREATEN MUCH OF
OKLAHOMA AND NORTH TX WITH A WIDESPREAD FREEZE. WINDS HERE ARE
ALREADY VEERING EASTERLY AND WILL TREND SOUTHERLY OVERNIGHT WHILE
HOLDING AROUND 10 MPH. THE EXCEPTION TO THIS IS IN OUR EASTERN ZONES
NEAREST THE DEPARTING RIDGE AXIS WHERE WINDS ARE MORE APT TO REMAIN
LIGHTER. A BRIEF FREEZE REMAINS POSSIBLE IN SOME LOCALES...BUT AFTER
COORDINATION WITH NEIGHBORING OFFICES IT WAS DEEMED TOO CONDITIONAL
FOR A WIDESPREAD FREEZE THREAT AND ANY FROST OR FREEZE PRODUCTS.
HOWEVER...WE DID ADD PATCHY FROST MENTION LATE TONIGHT ACROSS THE
NRN S PLAINS AND ROLLING PLAINS WHERE TEMPS AND HUMIDITIES APPEAR
MOST FAVORABLE AHEAD OF THE DRIER AIR IN THE SOUTHEAST PANHANDLE.
INTERMITTENT CIRRUS OVERNIGHT COULD PREVENT THIS ALTOGETHER...BUT
SATELLITE TRENDS SUGGEST GAPS IN THESE CLOUDS ARE LIKELY.

BY SATURDAY AFTERNOON...AN UPPER RIDGE WILL HAVE PUSHED DOWNSTREAM
OF THE REGION AND REPLACED NLY WINDS ALOFT WITH SW FLOW. THIS WILL
PULL A ZONE OF MID-LEVEL MOISTURE FROM NRN MEXICO INTO THE S PLAINS
AND MAKE FOR MORE CLOUD COVER THAN IN RECENT DAYS. LEE TROUGHING
MEANWHILE IN SERN CO AND NERN NM WILL CREATE SOME BREEZY SLY WINDS
LOCALLY...BUT THE NAM/MET ARE MORE AGGRESSIVE WITH CLOUD COVER
COMPARED TO THE GFS/MAV AND AS A RESULT KEEP WINDS ABOUT 5 KNOTS
LIGHTER THAN THE GFS. DID TREND WINDS A BIT LOWER THAN BEFORE GIVEN
OVERCAST HIGH CLOUDS FROM METARS IN SONORA.

LONG TERM...
INTERESTING FORECAST WITH DECENT PROSPECTS FOR RAIN INTO EARLY NEXT
WEEK.  BY SATURDAY EVENING....RIDGING OVER THE CENTRAL USA UP TO
NEAR UNGAVA BAY WILL BE REPLACED WITH SOUTHWESTERLY FLOW AHEAD OF AN
UPPER LEVEL STORM SYSTEM CURRENTLY COMING ASHORE THE PACIFIC
NORTHWEST.  BEST ENERGY THROUGH THE WEEKEND WILL REMAIN ACROSS THE
NORTHERN PLAINS AS A LOW SWEEPS TO A NEGATIVE CONFIGURATION ACROSS
MT WHILE LEAVING A TROUGH SWEEPING BACK ACROSS THE SWRN US TOWARD
22N127W.  THE ECM/CMC PINCHES OFF A LOW ACROSS BAJA CALIFORNIA AS
THE MAIN JET REMAINS TO OUR NORTH.  HOW THE LOW EVENTUALLY EJECTS
REMAINS A SIZABLE QUESTION.  NORTHWEST FLOW ALOFT DOES NOT TO RETURN
UNTIL NEXT WEEKEND.  THE ECM DEPICTS TWO PERIODS OF ENHANCED UVV THE
FIRST BEING MONDAY NIGHT AND A SECOND INTO THURSDAY.
SOUTHERLY SURFACE FLOW WILL HELP TO USHER IN A JUICIER AIRMASS.
PRECIPITATION SHOULD START EARLY MONDAY ACROSS THE TX/NM BORDER AND
OVERSPREAD THE REGION FOR MUCH OF THE DAY.  A DRYLINE FEATURE WILL
SWEEP ACROSS THE AREA MONDAY EVENING BRINGING A QUICK END TO THE
PRECIPITATION FOLLOWED BY A COLD FRONT JUST BEFORE DAYBREAK TUESDAY
MORNING.  SOME RESIDUAL ACTIVITY MAY BE PRESENT EARLY TUESDAY
MORNING ACROSS THE ROLLING PLAINS.  THERE ARE SOME INDICATIONS THAT
THINGS WILL DRY OUT TUESDAY AND WEDNESDAY BUT WILL KEEP LOW-END POPS
GOING FOR THE TIME BEING.  PRECIPITATION INCREASING ON THURSDAY IS
CONTINGENT ON THE EVOLUTION OF SOUTHWESTERN LOW WITH THINGS
CLEARING OUT FOR NEXT WEEKEND.

&&

.PRELIMINARY POINT TEMPS/POPS...
FRIONA        35  63  38  72  44 /   0   0   0  20  40
TULIA         34  62  41  69  49 /   0   0   0  20  30
PLAINVIEW     34  62  43  69  49 /   0   0   0  20  30
LEVELLAND     35  64  41  69  47 /   0   0   0  20  30
LUBBOCK       35  63  45  69  51 /   0   0   0  20  30
DENVER CITY   36  65  44  70  49 /   0   0   0  20  30
BROWNFIELD    37  65  45  70  50 /   0   0   0  20  30
CHILDRESS     33  61  43  69  53 /   0   0   0  20  20
SPUR          33  63  43  69  52 /   0   0   0  20  20
ASPERMONT     34  63  45  70  53 /   0   0   0  10  20

&&

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

$$

23/33/23

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