

764 

WWUS20 KWNS 281641

SEL2

SPC WW 281641

ALZ000-FLZ000-GAZ000-010000-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 42

NWS STORM PREDICTION CENTER NORMAN OK

1140 AM EST SAT FEB 28 2009



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       PARTS OF SOUTHEAST ALABAMA

       PARTS OF FLORIDA PANHANDLE

       LARGE PART OF SOUTHERN AND CENTRAL GEORGIA



EFFECTIVE THIS SATURDAY MORNING AND EVENING FROM 1140 AM UNTIL

700 PM EST.



TORNADOES...HAIL TO 2 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 55 STATUTE

MILES NORTH AND SOUTH OF A LINE FROM 10 MILES NORTHWEST OF

CRESTVIEW FLORIDA TO 60 MILES EAST NORTHEAST OF VIDALIA GEORGIA.

FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH

OUTLINE UPDATE (WOUS64 KWNS WOU2).



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...THIS TORNADO WATCH REPLACES TORNADO

WATCH NUMBER 41. WATCH NUMBER 41 WILL NOT BE IN EFFECT AFTER 1140

AM EST.



DISCUSSION...LINE OF THUNDERSTORMS WITH EMBEDDED SUPERCELLS FROM

CENTRAL GA SWWD WRN FL PANHANDLE WILL SLOWLY DEVELOP EWD THRU THE

AFTERNOON.  AIR MASS IN ADVANCE OF LINE IS DESTABILIZING AND

BECOMING SUPPORTIVE OF MORE DISCRETE STORM FORMATION AS MLCAPES

CLIMB TO 1000 J/KG.  STRONG  SHEAR PROFILES WILL CONTINUED THREAT OF

DAMAGING WINDS AND AT LEAST ISOLATED TORNADOES...PARTICULARLY WITH

ANY SUPERCELL DEVELOPMENT.



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

SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE

WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO

450. MEAN STORM MOTION VECTOR 25035.





...HALES

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