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911 

WWUS20 KWNS 060328

SEL8

SPC WW 060328

ARZ000-MSZ000-OKZ000-TNZ000-TXZ000-061100-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 248

NWS STORM PREDICTION CENTER NORMAN OK

1030 PM CDT TUE MAY 5 2009



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       CENTRAL AND SOUTHERN ARKANSAS

       NORTHERN MISSISSIPPI

       SOUTHEAST OKLAHOMA

       WEST TENNESSEE

       NORTHEAST TEXAS



EFFECTIVE THIS TUESDAY NIGHT AND WEDNESDAY MORNING FROM 1030 PM

UNTIL 600 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 80

STATUTE MILES NORTH AND SOUTH OF A LINE FROM 20 MILES NORTH

NORTHWEST OF DE QUEEN ARKANSAS TO 35 MILES EAST NORTHEAST OF

TUPELO MISSISSIPPI.  FOR A COMPLETE DEPICTION OF THE WATCH SEE

THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU8).



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 247...



DISCUSSION...THUNDERSTORMS ARE INCREASING OVER A LARGE AREA OF AR

AND NORTHERN MS...ON NOSE OF STRONG SOUTHERLY LOW LEVEL JET AND IN

REGION OF MODERATE INSTABILITY.  ACTIVITY MAY REMAIN CAPABLE OF

LARGE HAIL THROUGHOUT THE NIGHT AS THEY DEVELOP EASTWARD.  BY LATE

TONIGHT OVER WEST TN AND NORTHERN MS...THERE APPEARS TO BE AN

INCREASING RISK OF DAMAGING WINDS AS WELL.



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 27030.





...HART

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