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000 

WWUS20 KWNS 151344

SEL8

SPC WW 151344

FLZ000-CWZ000-152100-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 148

NWS STORM PREDICTION CENTER NORMAN OK

945 AM EDT SUN APR 15 2007



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       CENTRAL AND SOUTHERN FLORIDA

       COASTAL WATERS



EFFECTIVE THIS SUNDAY MORNING AND AFTERNOON FROM 945 AM UNTIL 500

PM EDT.



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 70 STATUTE

MILES EAST AND WEST OF A LINE FROM 40 MILES NORTH NORTHWEST OF

ORLANDO FLORIDA TO 50 MILES SOUTHWEST OF MIAMI FLORIDA.  FOR A

COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE

UPDATE (WOUS64 KWNS WOU8).



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 146...WW 147...



DISCUSSION...LINE OF STRONG/SEVERE THUNDERSTORMS WILL CONTINUE

TRACKING EASTWARD ACROSS THE PENINSULA TODAY.  MORNING SOUNDINGS AND

MODEL GUIDANCE INDICATE A CONTINUED RISK OF EMBEDDED SUPERCELLS AND

BOWS WITHIN THE LINE...POSING A RISK OF DAMAGING WINDS AND ISOLATED

TORNADOES.  PARTS OF SOUTH FL WILL SEE CONSIDERABLE HEATING

TODAY...WHICH MAY OFFSET WEAKER LARGE SCALE FORCING AND MAINTAIN

THREAT THIS AFTERNOON.



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 26035.





...HART

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