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WWUS20 KWNS 211832
SEL2  
SPC WW 211832
ALZ000-FLZ000-GAZ000-CWZ000-220200-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 332
NWS STORM PREDICTION CENTER NORMAN OK
230 PM EDT WED MAY 21 2008

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

       FAR SOUTHEASTERN ALABAMA
       NORTHERN FLORIDA
       SOUTHEASTERN GEORGIA
       COASTAL WATERS

EFFECTIVE THIS WEDNESDAY AFTERNOON AND EVENING FROM 230 PM UNTIL
1000 PM EDT.

HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70
MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 55
STATUTE MILES NORTH AND SOUTH OF A LINE FROM 40 MILES SOUTHWEST
OF CRESTVIEW FLORIDA TO 25 MILES EAST NORTHEAST OF BRUNSWICK
GEORGIA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU2).

REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE
FAVORABLE FOR 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. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY
DO PRODUCE TORNADOES.

DISCUSSION...CONVECTION HAS RECENTLY DEVELOPED NEAR QUASI-STATIONARY
FRONT AS TEMPERATURES WARMED INTO THE UPPER 80S. MLCAPES AROUND 2000
J/KG AND DEEP LAYER SHEAR NEAR 40 KT ARE FAVORABLE FOR SEVERE
STORMS. HAIL SHOULD BE THE MAIN THREAT...GIVEN THE AMOUNT OF
INSTABILITY AND STEEP MID LEVEL LAPSE RATES. HOWEVER...
UNIDIRECTIONAL WLY WINDS INCREASING WITH HEIGHT MAY RESULT IN SHORT
LINE SEGMENTS WITH WIND DAMAGE.

AVIATION...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 500. MEAN STORM
MOTION VECTOR 29025.

..IMY


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