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000 

WWUS20 KWNS 120345

SEL0

SPC WW 120345

ARZ000-TXZ000-120800-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 50

NWS STORM PREDICTION CENTER NORMAN OK

945 PM CST MON FEB 11 2008



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       SOUTHWEST AND CENTRAL ARKANSAS

       NORTHEAST TEXAS



EFFECTIVE THIS MONDAY NIGHT AND TUESDAY MORNING FROM 945 PM UNTIL

200 AM CST.



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 60

STATUTE MILES NORTH AND SOUTH OF A LINE FROM 5 MILES WEST

NORTHWEST OF DE QUEEN ARKANSAS TO 35 MILES EAST SOUTHEAST OF

BATESVILLE ARKANSAS.  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 49...



DISCUSSION...STRENGTHENING LOW LEVEL JET WILL CONTINUE TO SUPPORT

DESTABILIZATION AND ISENTROPIC ASCENT INTO THE LOWER MS VALLEY

REGION NORTH OF FRONTAL BOUNDARY. STORMS WILL REMAIN ELEVATED...BUT

STEEP MID LEVEL LAPSE RATE AND MODERATE INSTABILITY WILL CONTRIBUTE

TO A THREAT FOR LARGE HAIL INTO THE EARLY MORNING HOURS.



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 450. MEAN STORM

MOTION VECTOR 24040.





...DIAL/CORFIDI

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