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URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 423

NWS STORM PREDICTION CENTER NORMAN OK

745 PM EDT SUN JUN 24 2012



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       WESTERN AND CENTRAL FLORIDA PENINSULA

       COASTAL WATERS



EFFECTIVE THIS SUNDAY NIGHT AND MONDAY MORNING FROM 745 PM UNTIL

500 AM EDT.



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 50 STATUTE

MILES EAST AND WEST OF A LINE FROM 20 MILES NORTH OF CROSS CITY

FLORIDA TO 30 MILES SOUTHEAST OF NAPLES FLORIDA.  FOR A COMPLETE

DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE

(WOUS64 KWNS WOU3).



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 422...



DISCUSSION...BASED ON LATEST NHC GUIDANCE...TROPICAL STORM DEBBY IS

EXPECTED TO DRIFT SLOWLY NWD TONIGHT WITH ASSOCIATED STRONG

LOW-LEVEL WIND FIELD /AND RESULTANT SHEAR/ PERSISTING ACROSS THE

WATCH AREA.  GIVEN 0-1 KM SRH OF 250-450 M2/S2 --PER LOCAL VAD

DATA-- AND A MOIST/LOW LCL BOUNDARY LAYER...ENVIRONMENT WILL REMAIN

SUPPORTIVE OF SUPERCELLS CAPABLE OF TORNADOES.  THIS IS ESPECIALLY

THE CASE INVOF WARM FRONT --CURRENTLY FROM N OF TPA TO MLB-- WHERE

LOW-LEVEL SHEAR/VORTICITY WILL BE FURTHER ENHANCED.



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

500. MEAN STORM MOTION VECTOR 18035.





...MEAD

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