

961 

WWUS20 KWNS 140610

SEL3

SPC WW 140610

ARZ000-LAZ000-OKZ000-TXZ000-141200-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 303

NWS STORM PREDICTION CENTER NORMAN OK

110 AM CDT THU MAY 14 2009



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       SOUTHWEST ARKANSAS

       NORTHWEST LOUISIANA

       SOUTHEAST OKLAHOMA

       NORTH CENTRAL AND NORTHEAST TEXAS



EFFECTIVE THIS THURSDAY MORNING FROM 110 AM UNTIL 700 AM CDT.



HAIL TO 2 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 60

STATUTE MILES NORTH AND SOUTH OF A LINE FROM 40 MILES WEST

NORTHWEST OF FORT WORTH TEXAS TO 55 MILES EAST SOUTHEAST OF

TEXARKANA ARKANSAS.  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 298...WW 299...WW

300...WW 301...WW 302...



DISCUSSION...WELL ORGANIZED SQUALL LINE IS SURGING SEWD ACROSS OK AT

ROUGHLY 30 KT AND WILL SOON SPREAD INTO NORTH CENTRAL AND NORTHEAST

TX.  THIS ACTIVITY IS MOVING THROUGH A FAIRLY UNSTABLE AIRMASS THAT

SHOULD CONTINUE TO SUPPORT SEVERE THUNDERSTORMS CAPABLE OF

GENERATING LARGE HAIL AND DAMAGING WINDS.



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

TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60

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

MOTION VECTOR 30030.





...DARROW

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