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156 

WWUS20 KWNS 251909

SEL7

SPC WW 251909

FLZ000-CWZ000-260200-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 7

NWS STORM PREDICTION CENTER NORMAN OK

210 PM EST TUE JAN 25 2011



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       MUCH OF THE FLORIDA PENINSULA

       COASTAL WATERS



EFFECTIVE THIS TUESDAY AFTERNOON AND EVENING FROM 210 PM UNTIL

900 PM EST.



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 85 STATUTE

MILES EAST AND WEST OF A LINE FROM 40 MILES SOUTH SOUTHWEST OF

AVON PARK FLORIDA TO 15 MILES NORTHWEST OF ST AUGUSTINE FLORIDA.

FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH

OUTLINE UPDATE (WOUS64 KWNS WOU7).



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.



DISCUSSION...SQUALL LINE NERN GULF WILL BE MOVING ONSHORE INTO AN

INCREASINGLY  FAVORABLE AIR MASS FOR SEVERE STORMS AND POSSIBLE

SUPERCELLS. MLCAPES HAVE CLIMBED TO AOA 500 J/KG ALONG WITH STEADILY

IMPROVING SHEAR PROFILES WITH APPROACH OF STRONG UPPER TROUGH AND

SURFACE LOW. IN ADDITION TO POTENTIAL SEVERE INCLUDING ISOLATED

TORNADOES WITH THE SQUALL LINE...MORE DISCRETE CONVECTION IS NOW

DEVELOPING IN  WCENTRAL FL AND WILL POTENTIALLY DEVELOP INTO LOW

TOPPED SUPERCELLS/POSSIBLE TORNADOES AS THEY TRACK NEWD ACROSS

CENTRAL AND NERN FL AHEAD OF THE SQUALL LINE THIS AFTERNOON.



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

450. MEAN STORM MOTION VECTOR 24035.





...HALES

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