

370 

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

