

352 

WWUS20 KWNS 082157

SEL0

SPC WW 082157

TXZ000-090500-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 760

NWS STORM PREDICTION CENTER NORMAN OK

500 PM CDT THU OCT 8 2009



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       LARGE PART OF SOUTHWEST TEXAS



EFFECTIVE THIS THURSDAY AFTERNOON FROM 500 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 70

STATUTE MILES EAST AND WEST OF A LINE FROM 25 MILES WEST

NORTHWEST OF ABILENE TEXAS TO 25 MILES SOUTH SOUTHWEST OF DEL RIO

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

WATCH OUTLINE UPDATE (WOUS64 KWNS WOU0).



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 758...WW 759...



DISCUSSION...THUNDERSTORMS ARE INCREASING IN NUMBER AND INTENSITY

ALONG AND AHEAD OF SURFACE TROUGH/DRY LINE THAT EXTENDS SWD THE BIG

BEND AREA.  WITH A VERY WARM AND MDTLY UNSTABLE WARM SECTOR...ALONG

WITH 40-50KT OF SHEAR...LARGE HAIL AND DAMAGING WINDS WILL BE

POSSIBLE WITH ANY SUPERCELL THAT DEVELOPS.



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 550. MEAN STORM

MOTION VECTOR 24025.





...HALES

