SEL4 URGENT - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WATCH NUMBER 334 NWS STORM PREDICTION CENTER NORMAN OK 215 PM EDT FRI JUN 1 2012 THE NWS STORM PREDICTION CENTER HAS ISSUED A SEVERE THUNDERSTORM WATCH FOR PORTIONS OF EASTERN NORTH CAROLINA EASTERN SOUTH CAROLINA COASTAL WATERS EFFECTIVE THIS FRIDAY AFTERNOON AND EVENING FROM 215 PM UNTIL 1000 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 110 STATUTE MILES EAST AND WEST OF A LINE FROM 25 MILES NORTH NORTHEAST OF ROCKY MOUNT NORTH CAROLINA TO 20 MILES SOUTH SOUTHEAST OF CHARLESTON SOUTH CAROLINA. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU4). 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 332...WW 333... DISCUSSION...STRONG/SEVERE THUNDERSTORMS ARE INCREASING ACROSS THE EASTERN CAROLINAS THIS AFTERNOON IN A VERY MOIST AND MODERATELY UNSTABLE AIRMASS. THIS ACTIVITY SHOULD CONTINUE TO INCREASE IN INTENSITY AS IT LOW LEVEL LAPSE RATES CONTINUE TO STEEPEN AND LARGE SCALE ASCENT ASSOCIATED WITH AN APPROACHING UPPER TROUGH STRENGTHENS. DEEP LAYER SHEAR ON THE ORDER OF 35KT SUGGESTS ORGANIZED MULTI-CELL UPDRAFTS AND PERHAPS A FEW SUPERCELLS. BOTH STORM MODES WILL SUPPORT SOME HAIL...AROUND 1 INCH IN DIAMETER...AND LOCALIZED DAMAGING WINDS. 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 24035.
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