MESOSCALE DISCUSSION 0501
   NWS STORM PREDICTION CENTER NORMAN OK
   0309 AM CDT THU APR 21 2011
   
   AREAS AFFECTED...NERN GEORGIA INTO WRN AND CNTRL SOUTH CAROLINA
   
   CONCERNING...SEVERE THUNDERSTORM WATCH 174...
   
   VALID 210809Z - 210945Z
   
   THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 174
   CONTINUES.
   
   THE ONGOING MESOSCALE CONVECTIVE SYSTEM ACCELERATED SOME AS IT
   PROGRESSED ACROSS THE ATLANTA METRO AREA.  HOWEVER...LOWER/MID
   TROPOSPHERIC WARMING ACROSS CENTRAL GEORGIA HAS MAINTAINED STRONG
   INHIBITION PRECLUDING CONVECTIVE DEVELOPMENT ALONG THE SOUTHERN
   FLANK OF THE OUTFLOW.  STRONGEST STORMS HAVE BECOME FOCUSED TO THE
   EAST/NORTHEAST OF AN APPARENT MESOSCALE CONVECTIVE VORTEX...AND EVEN
   THIS ACTIVITY APPEARS TO BE WEAKENING AND SHRINKING IN AREAL
   COVERAGE AS IT ADVANCES TOWARD WESTERN SOUTH CAROLINA.  WITH
   UPSTREAM STRATIFORM PRECIPITATION DIMINISHING...CONVECTIVE OUTFLOW
   SHOULD CONTINUE TO WEAKEN...AND SEVERE POTENTIAL IS EXPECTED TO
   BECOME EVEN MORE LOCALIZED OR END COMPLETELY BY THE 09-11Z TIME
   FRAME.
   
   ..KERR.. 04/21/2011
   
   
   ATTN...WFO...CAE...GSP...FFC...
   
   LAT...LON   34478349 34668320 34808243 34508175 33908176 33688222
               33468287 33518349 33808344 34178340 34478349