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ALZ000-GAZ000-LAZ000-MSZ000-CWZ000-032100-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 233

NWS STORM PREDICTION CENTER NORMAN OK

1135 AM CDT SUN MAY 3 2009



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       SOUTHERN ALABAMA

       WEST-CENTRAL AND PARTS OF NORTHER GEORGIA

       EASTERN LOUISIANA

       SOUTHEAST MISSISSIPPI

       COASTAL WATERS



EFFECTIVE THIS SUNDAY MORNING AND AFTERNOON FROM 1135 AM UNTIL

400 PM CDT.



HAIL TO 1.5 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 90

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



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 85

STATUTE MILES EAST AND WEST OF A LINE FROM 15 MILES SOUTHEAST OF

GULFPORT MISSISSIPPI TO 5 MILES NORTH NORTHEAST OF ATLANTA

GEORGIA.  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 232...



DISCUSSION...MATURE AND INTENSE MCV AND ASSOCIATED DERECHO IS MOVING

ACROSS MS AT ROUGHLY 60KT AND WILL SOON MOVE INTO AL BEFORE

APPROACHING THE GA BORDER BY MID-LATE AFTERNOON. THERE WILL BE A

HIGH LIKELIHOOD OF DAMAGING WINDS ACCOMPANYING THE BOWING LINE OF

CONVECTION INTO AL OVER THE NEXT FEW HOURS...ESPECIALLY ALONG OLD

OUTFLOW BOUNDARY DRAPED IMMEDIATELY AHEAD OF APEX. DOWNSTREAM...AIR

MASS EAST TO GA/SC SHOULD BECOME INCREASINGLY UNSTABLE GIVEN DIURNAL

HEATING AND EXPECT THIS INSTABILITY TO CONTINUE TO FUEL INTENSE

STORM UPDRAFTS ALONG THE LEADING EDGE OF THE ADVANCING COLD POOL AND

ALONG THE SOUTHERN TRAILING EDGE OF THIS COMPLEX WHERE LOW LEVEL

MOISTURE FLUX WILL BE MAXIMIZED AND LARGE SCALE UPPER LEVEL DYNAMICS

WILL CONTINUE TO SUPPORT ASCENT AND STRONG SHEAR.



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

TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 80

KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 450. MEAN STORM

MOTION VECTOR 26055.





...CARBIN

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