WATCHES: Tornado Watch Number 787

WWUS20 KWNS 020909
SEL7
SPC WW 020909
ALZ000-FLZ000-GAZ000-CWZ000-021600-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 787
NWS STORM PREDICTION CENTER NORMAN OK
310 AM CST WED DEC 2 2009

THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF

SOUTHERN ALABAMA
FLORIDA PANHANDLE
SOUTHWESTERN GEORGIA
COASTAL WATERS

EFFECTIVE THIS WEDNESDAY MORNING FROM 310 AM UNTIL 1000 AM CST.

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 65 STATUTE
MILES NORTH AND SOUTH OF A LINE FROM 20 MILES SOUTH OF MOBILE
ALABAMA TO 35 MILES NORTHEAST OF TALLAHASSEE 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...THREAT FOR ISOLATED TORNADOES AND DAMAGING WINDS WILL
RAMP-UP EARLY THIS MORNING AND CONTINUE EWD TODAY AS IMPACTS OF
APPROACHING STRONG MID/UPPER LEVEL SYSTEM INCREASES TSTMS ACROSS WW.
ACTIVITY WILL LIKELY EVOLVE AS A BROKEN SQUALL LINE AND PROGRESS
EWD ACROSS WW THROUGH THE MID TO LATE MORNING...WITH ADDITIONAL
ISOLATED TSTMS CONTINUING TO MOVE ONSHORE IN ADVANCE OF THIS LINE.
LOW AND DEEP LAYER SHEAR REMAINS VERY STRONG AND WILL BE SUPPORTIVE
OF SUPERCELLS AND BOWING LINE SEGMENTS...WITH SEVERE/TORNADO THREAT
INCREASING AS BOUNDARY LAYER MOISTENING/HEATING OCCURS THIS MORNING.

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 450.
MEAN STORM MOTION VECTOR 24035.

...EVANS

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