MESOSCALE DISCUSSION 1976
   NWS STORM PREDICTION CENTER NORMAN OK
   0124 PM CDT SUN AUG 14 2011
   
   AREAS AFFECTED...CENTRAL/ERN SC AND ERN GA
   
   CONCERNING...SEVERE POTENTIAL...WATCH POSSIBLE 
   
   VALID 141824Z - 141900Z
   
   A SVR TSTM WATCH IS BEING CONSIDERED SOON FOR MUCH OF CENTRAL/ERN SC
   INTO PARTS OF ERN GA.
   
   EARLY-MID AFTERNOON RADAR IMAGERY SHOWED TSTMS BEGINNING TO DEVELOP
   WITHIN A DIFFERENTIAL HEATING CORRIDOR ALONG AND EITHER SIDE OF THE
   GA/SC BORDER/SAVANNAH RIVER VALLEY...AND GENERALLY EAST OF A SURFACE
   TROUGH EXTENDING FROM CENTRAL SC SWD INTO ERN-SRN GA.  SURFACE
   DEWPOINTS IN THE LOWER-MID 70S COMBINED WITH TEMPERATURES AROUND 90
   IS RESULTING IN MLCAPE OF 1500-2500 J/KG THUS FAR...DESPITE WEAK
   MIDLEVEL LAPSE RATES PER CHS SPECIAL 18Z SOUNDING.  WEAKLY SHEAR
   UNIDIRECTIONAL WLY WIND FIELDS PER THIS SOUNDING AND STEEP LOW LEVEL
   LAPSE RATES SUGGESTS STRONGER WIND GUSTS WOULD BE THE PRIMARY THREAT
   THROUGH THIS AFTERNOON.
   
   ASCENT WITHIN THE EXIT REGION OF A MIDLEVEL JET ROUNDING THE BASE OF
   THE ERN U.S. TROUGH WILL SPREAD ACROSS THIS REGION SUPPORTING
   ADDITIONAL CONVECTIVE DEVELOPMENT.
   
   ..PETERS.. 08/14/2011
   
   
   ATTN...WFO...ILM...CHS...CAE...
   
   LAT...LON   32938196 33568150 34248109 34658017 34437943 34027896
               33077943 32288059 31968115 31938142 32008149 32938196