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WWUS20 KWNS 100005

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SPC WW 100005

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URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 263

NWS STORM PREDICTION CENTER NORMAN OK

705 PM CDT WED MAY 9 2007



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       SOUTH CENTRAL TEXAS



EFFECTIVE THIS WEDNESDAY EVENING FROM 705 PM UNTIL 1100 PM CDT.



HAIL TO 1.5 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 55

STATUTE MILES EAST AND WEST OF A LINE FROM 50 MILES NORTHWEST OF

TEMPLE TEXAS TO 15 MILES EAST SOUTHEAST OF HONDO TEXAS.  FOR A

COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE

UPDATE (WOUS64 KWNS WOU3).



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 262...



DISCUSSION...LINEAR MCS NOW MOVING EWD FROM THE BIG BEND REGION INTO

CENTRAL TX WILL LIKELY PERSIST FOR SEVERAL HOURS AHEAD OF WELL

DEFINED UPPER LOW NOW MOVING OUT OF SWRN TX.  CLUSTER OF STORMS

ALONG NRN END OF THE LINE MAY MAINTAIN LOW LEVEL ROTATION AND

POSSIBILITY OF FUNNEL CLOUDS/A BRIEF-TORNADO.  HOWEVER...MOST OF THE

ACTIVITY WILL BE DOMINATED BY BROADER OUTFLOW AND SUPPORT MAIN

THREAT OF DAMAGING WINDS/ISOLATED LARGE HAIL.  HEAVY RAIN WILL ALSO

BE A CONCERN.



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

TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60

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

MOTION VECTOR 25035.





...EVANS

