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WWUS20 KWNS 281448

SEL1

SPC WW 281448

ALZ000-FLZ000-LAZ000-MSZ000-CWZ000-290000-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 591

NWS STORM PREDICTION CENTER NORMAN OK

945 AM CDT TUE AUG 28 2012



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       SOUTHWEST ALABAMA

       WESTERN FLORIDA PANHANDLE

       SOUTHEAST LOUISIANA

       FAR SOUTHEAST MISSISSIPPI

       COASTAL WATERS



EFFECTIVE THIS TUESDAY MORNING AND EVENING FROM 945 AM UNTIL 700

PM CDT.



TORNADOES...HAIL TO 0.5 INCH IN DIAMETER...THUNDERSTORM WIND

GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE

AREAS.



THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 55 STATUTE

MILES NORTH AND SOUTH OF A LINE FROM 15 MILES WEST OF NEW ORLEANS

LOUISIANA TO 20 MILES EAST OF PANAMA CITY FLORIDA.  FOR A

COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE

UPDATE (WOUS64 KWNS WOU1).



REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR

TORNADOES AND 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.



DISCUSSION...A SLOW INCREASE IN CONVECTION HAS BEEN NOTED THIS

MORNING ON OUTER PERIPHERY OF ISAAC WHERE BREAKS IN THE CLOUDS ARE

SUPPORTING AIR MASS DESTABILIZATION.  THIS TREND SHOULD CONTINUE

THROUGH THE REMAINDER OF THE MORNING AND THIS AFTERNOON WITH AN

INCREASED RISK FOR MINI SUPERCELLS AND AN ASSOCIATED TORNADO THREAT.



AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL

SURFACE AND ALOFT TO 0.5 INCH. EXTREME TURBULENCE AND SURFACE

WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO

450. MEAN STORM MOTION VECTOR 11040.





...MEAD

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