

000 

WWUS20 KWNS 130330

SEL5

SPC WW 130330

FLZ000-CWZ000-131200-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 55

NWS STORM PREDICTION CENTER NORMAN OK

1020 PM EST TUE FEB 12 2008



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       MUCH OF THE FLORIDA PENINSULA

       COASTAL WATERS



EFFECTIVE THIS TUESDAY NIGHT AND WEDNESDAY MORNING FROM 1020 PM

UNTIL 700 AM 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 80 STATUTE

MILES EAST AND WEST OF A LINE FROM 5 MILES NORTH NORTHWEST OF

GAINESVILLE FLORIDA TO 60 MILES SOUTH SOUTHWEST OF MIAMI 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 53. WATCH NUMBER 53 WILL NOT BE IN EFFECT AFTER 1020

PM EST. CONTINUE...WW 54...



DISCUSSION...TSTMS/SUPERCELLS EXPECTED TO PERSIST THROUGH EARLY

WEDNESDAY ALONG /1/ SW-NE CONFLUENCE BAND ATTM EXTENDING FROM NAPLES

TO ABOUT 30 N PBI...AND /2/ ALONG SIMILAR...WEAKER FEATURE NOW

EXTENDING FROM 50 W TPA TO NEAR GNV.  BOTH LINES SHOULD EDGE SLOWLY

E WITH TIME...WITH SRN LINE ALSO DEVELOPING NE TOWARD THE E FL CST.

DEEP WIND FIELD ACROSS THE PENINSULA EXPECTED TO REMAIN FAVORABLE

FOR SUPERCELLS...WITH GREATEST LOW-LEVEL SHEAR /SRH AOA 250 M2 PER

S2/ EXPECTED IN AREAS IMMEDIATELY AHEAD OF THE CONFLUENCE LINES.

THE GREATEST LOW-LEVEL INSTABILITY/MOISTURE...AND ASSOCIATED TORNADO

THREAT IN THE NEAR TERM...SHOULD REMAIN CONFINED TO SRN CONFLUENCE

BAND.  HOWEVER...CONTINUING LOW LEVEL AIR MASS RECOVERY MAY SUPPORT

AN INCREASING TORNADO THREAT NWD ALONG THE FL E CST TO NEAR JAX

EARLY WEDNESDAY.



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 23035.





...CORFIDI

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