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WWUS20 KWNS 071702

SEL5

SPC WW 071702

FLZ000-CWZ000-080000-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 105

NWS STORM PREDICTION CENTER NORMAN OK

1200 PM EST FRI MAR 7 2008



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       NORTHERN AND CENTRAL FLORIDA

       COASTAL WATERS



EFFECTIVE THIS FRIDAY AFTERNOON AND EVENING FROM NOON UNTIL 700

PM EST.



TORNADOES...HAIL TO 1.5 INCHES IN DIAMETER...THUNDERSTORM WIND

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

AREAS.



THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 60 STATUTE

MILES NORTH AND SOUTH OF A LINE FROM 35 MILES NORTHWEST OF SAINT

PETERSBURG FLORIDA TO 25 MILES EAST SOUTHEAST OF DAYTONA BEACH

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 104. WATCH NUMBER 104 WILL NOT BE IN EFFECT AFTER

NOON EST.



DISCUSSION...LINE OF THUNDERSTORMS WITH EMBEDDED SUPERCELLS IS

EXPECTED TO PERSIST ACROSS NRN FL AND DEVELOP SWD INTO CNTRL FL THIS

AFTERNOON WHERE THE ATMOSPHERE CONTINUES TO DESTABILIZE. VERTICAL

WIND PROFILES WILL REMAIN FAVORABLE FOR ORGANIZED STORM STRUCTURES

INCLUDING BOWING SEGMENTS AND SUPERCELLS WITH DAMAGING WIND AND

ISOLATED TORNADOES THE MAIN THREATS. POTENTIAL WILL ALSO EXIST FOR

ADDITIONAL MORE DISCRETE STORMS TO DEVELOP AHEAD OF THE LINE.



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

SURFACE AND ALOFT TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE

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

500. MEAN STORM MOTION VECTOR 25035.





...DIAL/THOMPSON

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