

674 

WWUS20 KWNS 161115

SEL0

SPC WW 161115

FLZ000-161400-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 740

NWS STORM PREDICTION CENTER NORMAN OK

615 AM EST SUN DEC 16 2007



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       CENTRAL FLORIDA



EFFECTIVE THIS SUNDAY MORNING FROM 615 AM UNTIL 900 AM 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 20 STATUTE

MILES NORTH AND SOUTH OF A LINE FROM 35 MILES WEST OF ORLANDO

FLORIDA TO 35 MILES NORTHEAST OF ORLANDO FLORIDA.  FOR A COMPLETE

DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE

(WOUS64 KWNS WOU0).



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...REMNANT MESOLOW WILL TRACK ENEWD FROM CENTRAL FL TO THE

ATLANTIC COAST THIS MORNING.  VERY STRONG LOW-LEVEL SHEAR PRECEDES

THIS LOW /EFFECTIVE SRH NEAR 400 M2/S2/...AND DISCRETE STORM

STRUCTURES PERSIST AS WELL.  THE THREAT FOR A TORNADO OR TWO AND

DAMAGING WINDS WILL CONTINUE UNTIL THE CONVECTION MOVES OFFSHORE BY

13-14Z.



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

500. MEAN STORM MOTION VECTOR 25035.





...THOMPSON

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