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000 

WWUS20 KWNS 072337

SEL6

SPC WW 072337

FLZ000-CWZ000-080700-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 106

NWS STORM PREDICTION CENTER NORMAN OK

635 PM EST FRI MAR 7 2008



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       CENTRAL AND SOUTHERN FLORIDA PENINSULA

       COASTAL WATERS



EFFECTIVE THIS FRIDAY NIGHT AND SATURDAY MORNING FROM 635 PM

UNTIL 200 AM 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 EAST AND WEST OF A LINE FROM 45 MILES NORTHWEST OF ORLANDO

FLORIDA TO 60 MILES EAST SOUTHEAST OF FORT MEYERS FLORIDA.  FOR A

COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE

UPDATE (WOUS64 KWNS WOU6).



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 105. WATCH NUMBER 105 WILL NOT BE IN EFFECT AFTER

635 PM EST.



DISCUSSION...QLCS FROM THE NRN FL PENINSULA SWWD INTO THE CNTRL GULF

OF MEXICO WILL CONTINUE OVERNIGHT IN ADVANCE OF STRONG UPPER TROUGH

SHIFTING EWD ACROSS THE GULF COAST STATES.  THE COMBINATION OF

MODERATE INSTABILITY AND STRENGTHENING LOW-LEVEL SHEAR SUGGEST A

THREAT OF EMBEDDED SUPERCELLS AND BOWS CAPABLE OF DAMAGING

WINDS...HAIL AND ISOLATED TORNADOES.



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 24035.





...MEAD/HART

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