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490 

WWUS20 KWNS 010205

SEL7

SPC WW 010205

TXZ000-010600-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 77

NWS STORM PREDICTION CENTER NORMAN OK

905 PM CDT SUN MAR 31 2013



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       DEEP SOUTH TEXAS



EFFECTIVE THIS SUNDAY NIGHT AND MONDAY MORNING FROM 905 PM UNTIL

100 AM CDT.



HAIL TO 3 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 5 MILES EAST NORTHEAST

OF ALICE TEXAS TO 105 MILES SOUTH OF ALICE TEXAS.  FOR A COMPLETE

DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE

(WOUS64 KWNS WOU7).



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 73...WW 76...



DISCUSSION...AN INTENSE SUPERCELL WITH A HISTORY OF PRODUCING

BASEBALL TO SOFTBALL-SIZED HAIL WILL LIKELY PERSIST FOR ANOTHER FEW

HOURS WITH A CONTINUED RISK FOR POTENTIALLY VERY LARGE HAIL AND

LOCALLY DAMAGING WINDS.  WITH TIME...STEADILY GROWING CONVECTIVE

INHIBITION SHOULD RESULT IN A GRADUAL WEAKENING OF THE STORM.



AVIATION...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 33025.





...MEAD

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