

000 

WWUS20 KWNS 242220

SEL1

SPC WW 242220

TXZ000-250500-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 351

NWS STORM PREDICTION CENTER NORMAN OK

520 PM CDT SAT MAY 24 2008



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       WEST CENTRAL TEXAS



EFFECTIVE THIS SATURDAY AFTERNOON FROM 520 PM UNTIL MIDNIGHT CDT.



HAIL TO 2.5 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70

MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 50

STATUTE MILES EAST AND WEST OF A LINE FROM 55 MILES WEST

SOUTHWEST OF SAN ANGELO TEXAS TO 120 MILES NORTHEAST OF BIG

SPRING TEXAS.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU1).



REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE

FAVORABLE FOR 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. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY

DO PRODUCE TORNADOES.



OTHER WATCH INFORMATION...CONTINUE...WW 346...WW 347...WW

348...WW 349...WW 350...



DISCUSSION...SCTD STRONG TO SVR TSTMS...SOME POSSIBLY WITH

INTERMITTENT SUPERCELLULAR STRUCTURE...EXPECTED TO CONTINUE

DEVELOPING INVOF DRY LINE INFLECTION W OF SJT.  GIVEN DEGREE OF

SFC-BASED INSTABILITY...THE STORMS COULD PRODUCE LOCALLY DMGG WIND

AND SVR HAIL AS DRY LINE RETREATS WWD THROUGH MID EVENING.



AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT

TO 2.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60

KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM

MOTION VECTOR 24015.





...CORFIDI

