MESOSCALE DISCUSSION 2108
   NWS STORM PREDICTION CENTER NORMAN OK
   1229 PM CDT SAT SEP 03 2011
   
   AREAS AFFECTED...SERN WV...PORTIONS OF WRN/CNTRL VA...FAR NWRN NC
   
   CONCERNING...SEVERE POTENTIAL...WATCH UNLIKELY 
   
   VALID 031729Z - 031900Z
   
   ISOLATED TO SCATTERED THUNDERSTORMS ARE EXPECTED TO INCREASE OVER
   THE HIGHER TERRAIN OF SERN WV AND WRN/CNTRL VA OVER THE NEXT COUPLE
   OF HOURS. THESE STORMS WILL TRACK SLOWLY SWD WITH STRONG/GUSTY WINDS
   BEING THE MAIN THREAT.
   
   LATEST VISIBLE SATELLITE AND RADAR INDICATED CONVECTION WAS
   BEGINNING TO DEVELOP ALONG THE HIGHER TERRAIN OF SERN WV AND WILL
   CONTINUE TO INCREASE OVER THE NEXT COUPLE OF HOURS. ISOLATED TO
   SCATTERED STORMS WILL DEVELOP SWD WITH CONTINUED HEATING ACROSS WRN
   AND CNTRL VA INTO FAR NWRN NC. WITH DEWPOINTS IN THE UPPER 60S TO
   LOWER 70S...SBCAPE VALUES WERE ALREADY APPROACHING 2500 J/KG ACROSS
   THIS REGION. ADDITIONALLY...MORNING ROABS FROM RNK AND GSO INDICATED
   AN EML ABOVE THE 850 MB LAYER WITH 700-500 MB LAPSE RATES
   APPROACHING 7 C/KM. COUPLED WITH A VERY UNSTABLE AIR MASS...AT LEAST
   A FEW STRONG TO SEVERE STORMS ARE EXPECTED. WEAK DEEP LAYER FLOW
   WILL RESULT IN SLOW MOVING STORMS PRESENTING MAINLY A DOWNBURST
   THREAT. HOWEVER...SOME MARGINALLY SEVERE HAIL IS POSSIBLE WITH
   STRONGER STORMS.
   
   GIVEN A LACK OF STRONGER FLOW OR UPPER LEVEL FORCING FOR
   ASCENT...THREAT IS NOT EXPECTED TO BE WIDESPREAD OR ORGANIZED.
   
   ..LEITMAN.. 09/03/2011
   
   
   ATTN...WFO...AKQ...LWX...RNK...PBZ...RLX...GSP...MRX...
   
   LAT...LON   38618053 38838039 39038000 39047983 39037932 38977896
               38707871 38257850 37937848 37517855 37027878 36757912
               36417986 36228069 36108140 36068183 36148194 36298191
               36668168 37008154 38008099 38618053