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WWUS20 KWNS 131501

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SPC WW 131501

FLZ000-GAZ000-SCZ000-CWZ000-132200-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 825

NWS STORM PREDICTION CENTER NORMAN OK

1100 AM EDT WED AUG 13 2008



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       NORTHERN FLORIDA

       SOUTHERN GEORGIA

       SOUTHERN SOUTH CAROLINA

       COASTAL WATERS



EFFECTIVE THIS WEDNESDAY MORNING AND EVENING FROM 1100 AM UNTIL

600 PM EDT.



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 NORTH AND SOUTH OF A LINE FROM 55 MILES EAST NORTHEAST OF

BRUNSWICK GEORGIA TO 45 MILES WEST SOUTHWEST OF TALLAHASSEE

FLORIDA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU5).



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...THIS TORNADO WATCH REPLACES TORNADO

WATCH NUMBER 824. WATCH NUMBER 824 WILL NOT BE IN EFFECT AFTER

1100 AM EDT.



DISCUSSION...SCATTERED STRONG THUNDERSTORMS CONTINUE ACROSS PARTS OF

SOUTHERN GA AND NORTHERN FL THIS MORNING...AHEAD OF PROGRESSIVE MID

LEVEL SHORTWAVE TROUGH.  DESPITE WEAK THERMODYNAMIC PARAMETERS...

FAVORABLE LOW LEVEL VERTICAL SHEAR WILL MAINTAIN A RISK OF TRANSIENT

CONVECTIVE INTENSIFICATION AND ASSOCIATED ISOLATED TORNADO

POTENTIAL.  THREAT IS EXPECTED TO PERSIS THROUGH MUCH OF THE

AFTERNOON.



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 500.

MEAN STORM MOTION VECTOR 25035.





...HART

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