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Severe Thunderstorm Watch 637
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WW0637 Radar
Note:  The expiration time in the watch graphic is amended if the watch is replaced, cancelled or extended.
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   SEL7
   
   URGENT - IMMEDIATE BROADCAST REQUESTED
   SEVERE THUNDERSTORM WATCH NUMBER 637
   NWS STORM PREDICTION CENTER NORMAN OK
   1050 AM CDT SUN JUN 29 2008
   
   THE NWS STORM PREDICTION CENTER HAS ISSUED A
   SEVERE THUNDERSTORM WATCH FOR PORTIONS OF 
   
          LARGE PART OF SOUTHERN ALABAMA
          LARGE PART OF FLORIDA PANHANDLE
          SOUTHWEST GEORGIA
          PARTS OF SOUTHEAST MISSISSIPPI
          COASTAL WATERS
   
   EFFECTIVE THIS SUNDAY MORNING AND EVENING FROM 1050 AM UNTIL 600
   PM CDT.
   
   HAIL TO 1.5 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 60
   STATUTE MILES NORTH AND SOUTH OF A LINE FROM 30 MILES NORTHWEST
   OF PINE BELT MISSISSIPPI TO 20 MILES NORTHEAST OF VALDOSTA
   GEORGIA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
   ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU7).
   
   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...THUNDERSTORMS WILL INCREASE RAPIDLY IN A VERY MOIST AND
   UNSTABLE ENVIRONMENT ACROSS THE WATCH.  WITH 20-30KT OF LOW/MID
   LEVEL FLOW AND MLCAPES AOA 2500...DAMAGING WINDS WILL BECOME THE
   PRIMARY THREAT AS COLD POOLS DEVELOP IN FORWARD PROPAGATING CLUSTERS
   OF SEVERE THUNDERSTORMS.
   
   AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
   TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60
   KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM
   MOTION VECTOR 27030.
   
   
   ...HALES
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