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324 

WWUS20 KWNS 031247

SEL2

SPC WW 031247

ALZ000-LAZ000-MSZ000-032000-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 232

NWS STORM PREDICTION CENTER NORMAN OK

745 AM CDT SUN MAY 3 2009



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       WESTERN AND CENTRAL ALABAMA

       EASTERN AND SOUTHERN LOUISIANA

       SOUTHWESTERN THROUGH EAST-CENTRAL MISSISSIPPI



EFFECTIVE THIS SUNDAY MORNING AND AFTERNOON FROM 745 AM UNTIL 300

PM CDT.



HAIL TO 1 INCH IN DIAMETER...THUNDERSTORM WIND GUSTS TO 80

MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 95

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

SOUTHWEST OF BATON ROUGE LOUISIANA TO 20 MILES WEST NORTHWEST OF

BIRMINGHAM ALABAMA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE

THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU2).



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 231...



DISCUSSION...TWO SVR MCS/S ARE FCST TO AFFECT WW AREA THROUGH AT

LEAST EARLY-MID AFTERNOON HOURS -- WITH SOME TIME OFFSET BUT SPATIAL

OVERLAP BETWEEN THEM ACROSS CENTRAL/ERN MS.  BOWING CONVECTIVE

SYSTEM NOW OVER CENTRAL MS...AND LARGER/VERY INTENSE AND POTENTIALLY

DERECHO-PRODUCING MCS OVER E TX -- EACH WILL MOVE INTO FAVORABLY

MOIST...BUOYANT AND GRADUALLY DESTABILIZING AIR MASS.



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

TO 1 INCH. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 70 KNOTS.

A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 550. MEAN STORM MOTION

VECTOR 27045.





...EDWARDS/EVANS

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