THE NWS STORM PREDICTION CENTER HAS ISSUED A * SEVERE THUNDERSTORM WATCH FOR PORTIONS OF CENTRAL AND SOUTHERN ALABAMA WESTERN FLORIDA PANHANDLE WEST-CENTRAL AND SOUTHWEST GEORGIA EAST-CENTRAL AND SOUTHEAST MISSISSIPPI COASTAL WATERS * EFFECTIVE THIS FRIDAY MORNING AND EVENING FROM 1130 AM UNTIL 800 PM CDT. * PRIMARY THREATS INCLUDE... NUMEROUS DAMAGING WIND GUSTS TO 70 MPH LIKELY THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 80 STATUTE MILES NORTH AND SOUTH OF A LINE FROM 45 MILES SOUTH SOUTHWEST OF MERIDIAN MISSISSIPPI TO 50 MILES SOUTHEAST OF COLUMBUS GEORGIA. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU5). PRECAUTIONARY/PREPAREDNESS ACTIONS... 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...TSTMS ARE RAPIDLY DEVELOPING OVER CNTRL AL ALONG THE LEADING EDGE OF A COLD POOL ASSOCIATED WITH A DECAYING MCS OVER NRN MS. THE AIR MASS ACROSS THE WATCH AREA IS VERY MOIST WITH MLCAPE VALUES OF 3000-4000 J/KG. WHEN COUPLED WITH A SLIGHT ENHANCEMENT OF NWLY MIDLEVEL FLOW /PER UPSTREAM VAD OBSERVATIONS/ THE SETUP APPEARS FAVORABLE FOR THE DEVELOPMENT OF A BOWING MCS CAPABLE OF CORRIDORS OF WIND DAMAGE. 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 600. MEAN STORM MOTION VECTOR 30030. ...MEAD WWWW
Posted on: Fri, 28 Jun 2013 16:30:16 +0000
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