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000 

WWUS20 KWNS 212202

SEL1

SPC WW 212202

ALZ000-FLZ000-GAZ000-220500-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 681

NWS STORM PREDICTION CENTER NORMAN OK

600 PM EDT FRI SEP 21 2007



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       EASTERN AND SOUTHERN ALABAMA

       MUCH OF THE FLORIDA PANHANDLE

       WESTERN AND SOUTHERN GEORGIA



EFFECTIVE THIS FRIDAY NIGHT AND SATURDAY MORNING FROM 600 PM

UNTIL 100 AM EDT.



TORNADOES...HAIL TO 0.5 INCH IN DIAMETER...THUNDERSTORM WIND

GUSTS TO 60 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 35 MILES EAST NORTHEAST OF LA

GRANGE GEORGIA TO 45 MILES EAST SOUTHEAST OF PANAMA CITY FLORIDA.

 FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH

OUTLINE UPDATE (WOUS64 KWNS WOU1).



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 679...WW 680...



DISCUSSION...SCTD BANDS OF SHALLOW SUPERCELLS EXPECTED TO PERSIST IN

NE QUADRANT T.D. 10 THROUGH LATE EVENING...WHERE LOW LVL DIRECTIONAL

SHEAR AND MOISTURE APPEAR SUPPORTIVE OF LOW LVL STORM ROTATION/

POSSIBLE BRIEF TORNADOES.  THREAT EXPECTED TO BE MOST CONCENTRATED

/1/ IN ARC OF ASCENT ASSOCIATED WITH WNW/ESE-ORIENTED FRONTAL ZONE

ACROSS CNTRL GA...WHERE HEATING HAS DESTABILIZED LOW LVL INFLOW

ENVIRONMENT AND STORMS MAY PERSIST THROUGH EARLY EVENING. /2/

FARTHER S...CLOSER TO MAIN T.D. CIRCULATION CENTER...OTHER BANDS OF

SHOWERS/STORMS MAY CONTINUE THROUGH LATE EVENING AND ROTATE N/NNWWD.



AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL

SURFACE AND ALOFT TO 0.5 INCH. EXTREME TURBULENCE AND SURFACE

WIND GUSTS TO 50 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO

500. MEAN STORM MOTION VECTOR 16030.





...CORFIDI

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