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000 

WWUS20 KWNS 301450

SEL9

SPC WW 301450

FLZ000-GAZ000-CWZ000-302200-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 939

NWS STORM PREDICTION CENTER NORMAN OK

950 AM EST SUN NOV 30 2008



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       NORTHERN AND CENTRAL FLORIDA

       EXTREME SOUTHEAST GEORGIA

       COASTAL WATERS



EFFECTIVE THIS SUNDAY MORNING AND AFTERNOON FROM 950 AM UNTIL 500

PM EST.



TORNADOES...HAIL TO 1 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 65 STATUTE

MILES EAST AND WEST OF A LINE FROM 35 MILES EAST NORTHEAST OF

JACKSONVILLE FLORIDA TO 30 MILES EAST SOUTHEAST OF SAINT

PETERSBURG FLORIDA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE

THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU9).



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.



OTHER WATCH INFORMATION...CONTINUE...WW 938...



DISCUSSION...LINE OF STORMS WITH EMBEDDED BOW ECHOES AND SUPERCELL

STRUCTURES WILL CONTINUE EAST THROUGH THE NRN AND CNTRL FL PENINSULA

THIS AFTERNOON. THE ATMOSPHERE DOWNSTREAM ACROSS THE FL PENINSULA

WILL CONTINUE TO DESTABILIZE WITH DIABATIC HEATING AND INCREASING

LOW LEVEL DEWPOINTS SUPPORTING MLCAPE FROM 500 TO 1000 J/KG.

HODOGRAPHS AND VERTICAL SHEAR PROFILES WILL REMAIN FAVORABLE FOR

SUPERCELLS AND BOWING STRUCTURES AHEAD OF EWD ADVANCING UPPER TROUGH

SUPPORTED BY STRONG SWLY LOW AND MID LEVEL JETS. ISOLATED DAMAGING

WIND AND TORNADOES WILL BE THE PRIMARY THREATS.



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

SURFACE AND ALOFT TO 1 INCH. EXTREME TURBULENCE AND SURFACE WIND

GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 450.

MEAN STORM MOTION VECTOR 24035.





...DIAL/HART

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