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Severe Thunderstorm Watch 240
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WW0240 Radar
Hazard Tornadoes EF2+ Tornadoes
Likelihood Low Very Low
Severe Wind 65 kt+ Wind
Moderate Moderate
Severe Hail 2"+ Hail
Moderate Low

Note:  The expiration time in the watch graphic is amended if the watch is replaced, cancelled or extended.
Note: Click for Watch Status Reports.
   SEL0
   
   URGENT - IMMEDIATE BROADCAST REQUESTED
   SEVERE THUNDERSTORM WATCH NUMBER 240
   NWS STORM PREDICTION CENTER NORMAN OK
   110 PM EDT MON MAY 4 2009
   
   THE NWS STORM PREDICTION CENTER HAS ISSUED A
   SEVERE THUNDERSTORM WATCH FOR PORTIONS OF 
   
          NORTHERN FLORIDA
          SOUTHERN GEORGIA
          SOUTHERN SOUTH CAROLINA
   
   EFFECTIVE THIS MONDAY AFTERNOON AND EVENING FROM 110 PM UNTIL 700
   PM EDT.
   
   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 65
   STATUTE MILES NORTH AND SOUTH OF A LINE FROM MARIANNA FLORIDA TO
   30 MILES SOUTH SOUTHEAST OF SAVANNAH GEORGIA.  FOR A COMPLETE
   DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE
   (WOUS64 KWNS WOU0).
   
   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.
   
   OTHER WATCH INFORMATION...CONTINUE...WW 238...WW 239...
   
   DISCUSSION...COLD POOL ASSOCIATED WITH SRN AL/WRN FL PANHANDLE MCS
   APPEARS TO BE GROWING AND SUPPORTING ENHANCED UPDRAFT DEVELOPMENT
   ALONG LEADING EDGE. RESULTING BOWING STRUCTURE HAS PICKED UP FORWARD
   SPEED AND SHOULD MOVE INTO WRN PORTIONS OF THIS WATCH WITHIN THE
   HOUR. ADDITIONAL VIGOROUS STORM DEVELOPMENT IS ANTICIPATED AS LIFT
   ASSOCIATED WITH THE MCV/MCS DEVELOPS EWD ACROSS SRN GA THROUGH THE
   AFTERNOON. DEEP-LAYER EFFECTIVE SHEAR ON THE ORDER OF 30KT
   COINCIDENT WITH CONVECTIVE DEVELOPMENT SHOULD CONTRIBUTE TO STORM
   ORGANIZATION WITHIN MODESTLY UNSTABLE AIR MASS CHARACTERIZED BY
   MLCAPE 800-1200 J/KG. EXPECT PRIMARY THREAT WILL BE DAMAGING WINDS
   ALTHOUGH HAIL WILL ALSO BE POSSIBLE WITH STRONGER AND MORE
   PERSISTENT UPDRAFTS.
   
   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 27035.
   
   
   ...CARBIN
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