SEL1 URGENT - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WATCH NUMBER 351 NWS STORM PREDICTION CENTER NORMAN OK 110 PM EDT MON JUN 4 2012 THE NWS STORM PREDICTION CENTER HAS ISSUED A SEVERE THUNDERSTORM WATCH FOR PORTIONS OF EXTREME NORTH FLORIDA SOUTHERN GEORGIA FAR SOUTHERN SOUTH CAROLINA COASTAL WATERS 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 55 STATUTE MILES NORTH AND SOUTH OF A LINE FROM 35 MILES NORTH NORTHWEST OF MOULTRIE GEORGIA TO 50 MILES EAST NORTHEAST OF BRUNSWICK GEORGIA. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU1). 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...AIDED BY THE REMNANTS OF AN EARLY DAY MESOSCALE CONVECTIVE SYSTEM AND ITS ASSOCIATED OUTFLOW...CLUSTERS OF STORMS ARE EXPECTED TO STEADILY INCREASE/INTENSIFY THIS AFTERNOON. THIS WILL INITIALLY OCCUR ACROSS SOUTHEAST GA/FAR SOUTHERN SC...WITH ADDITIONAL DEVELOPMENT POSSIBLE LATER THIS AFTERNOON ACROSS ADDITIONAL PORTIONS OF FAR SOUTH GA/EXTREME NORTH FL. A COMBINATION OF MODERATE INSTABILITY AND VERTICAL SHEAR...AIDED BY RELATIVELY STRONG NORTHWESTERLY MID/HIGH LEVEL FLOW...WILL SUPPORT SUSTAINED MULTICELLS CAPABLE OF WIND DAMAGE AND SEVERE HAIL. 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 27040.
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