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000 

WWUS20 KWNS 282022

SEL2

SPC WW 282022

OKZ000-TXZ000-290500-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 82

NWS STORM PREDICTION CENTER NORMAN OK

315 PM CDT WED MAR 28 2007



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       THE WESTERN OKLAHOMA PANHANDLE

       THE TEXAS PANHANDLE AND THE SOUTH PLAINS OF WEST TEXAS



EFFECTIVE THIS WEDNESDAY AFTERNOON FROM 315 PM UNTIL MIDNIGHT CDT.



...THIS IS A PARTICULARLY DANGEROUS SITUATION...



DESTRUCTIVE TORNADOES...LARGE HAIL TO 3 INCHES IN DIAMETER...

THUNDERSTORM WIND GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE

POSSIBLE IN THESE AREAS.



THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 80 STATUTE

MILES EAST AND WEST OF A LINE FROM 20 MILES NORTH OF GUYMON

OKLAHOMA TO 50 MILES SOUTH SOUTHEAST OF LUBBOCK TEXAS.  FOR A

COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE

UPDATE (WOUS64 KWNS WOU2).



REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR

TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH

AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR

THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS

AND POSSIBLE WARNINGS.



OTHER WATCH INFORMATION...CONTINUE...WW 80...WW 81...



DISCUSSION...THE LOW LEVELS CONTINUE TO MOISTEN AS BOUNDARY LAYER

DEWPOINTS OF 60-64 F SPREAD NWD/NWWD ON STRENGTHENING LOW-LEVEL

FLOW.  ALSO...SURFACE TEMPERATURES HAVE WARMED INTO THE 70S ACROSS

MUCH OF THE AREA...RESULTING IN WEAKENING CONVECTIVE INHIBITION.

THE DRYLINE IS BECOMING BETTER DEFINED NEAR THE TX/NM BORDER...AND

SHOULD PROVIDE A FOCUS FOR CONVECTIVE INITIATION IN THE NEXT COUPLE

OF HOURS.  ALSO...A SUBTLE MID-UPPER SHORTWAVE TROUGH IS ROTATING

NEWD TOWARD W/NW TX...AND AT LEAST ISOLATED STORM DEVELOPMENT IS

POSSIBLE THIS AFTERNOON INVOF THE E CENTRAL AND SE TX PANHANDLE.

GIVEN THE INCREASING LOW-LEVEL MOISTURE AND STRENGTHENING WIND

FIELDS IN AREA PROFILERS AND VWP/S...AS WELL AS SHORT TERM MODEL

FORECASTS...THE ENVIRONMENT WILL BECOME INCREASINGLY FAVORABLE FOR

SUPERCELLS THROUGH THE AFTERNOON/EVENING.  THE INITIAL ACTIVITY

SHOULD BE DISCRETE SUPERCELLS WITH THE POTENTIAL FOR A FEW STRONG

TORNADOES AND VERY LARGE HAIL.  BY EARLY TONIGHT...CONVECTION MAY

GROW UPSCALE INTO ONE OR MORE LINE SEGMENTS WITH MORE OF A LARGE

HAIL AND DAMAGING WIND THREAT.



AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL

SURFACE AND ALOFT TO 3 INCHES. EXTREME TURBULENCE AND SURFACE

WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO

500. MEAN STORM MOTION VECTOR 24035.





...THOMPSON

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