MESOSCALE DISCUSSION 1188
   NWS STORM PREDICTION CENTER NORMAN OK
   0932 PM CDT WED JUN 17 2009
   
   AREAS AFFECTED...PARTS OF TN-NC SMOKEY MTNS / NERN GA / UPSTATE OF
   SC
   
   CONCERNING...SEVERE THUNDERSTORM WATCH 441...
   
   VALID 180232Z - 180300Z
   
   THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 441
   CONTINUES.
   
   ISOLD LARGE HAIL/DMGG WIND POTENTIAL MAY PERSIST BEYOND WW 441 03Z
   EXPIRATION TIME.  THE VALID PORTIONS OF WW 441 WILL LIKELY BE
   REPLACED ALONG/W OF SAVANNAH RIVER BY 03Z.
   
   LATEST RADAR MOSAIC SHOWS CLUSTERS OF STRONG/SEVERE STORMS ACROSS
   PARTS OF THE SC/GA BORDER AND SC UPSTATE AREA EXTENDING NWWD INTO
   THE TN SMOKEY MTNS.  STORMS HAVE MORE RECENTLY DEVELOPED PARTLY DUE
   TO WEAK ISENTROPIC LIFT OVER ERN TN NEAR OR ATOP A COLD POOL
   ORIGINATING FROM CONVECTION LOCATED OVER FAR WRN NC AS OF 0225Z. 
   ALL OF THIS ACTIVITY IS SHOWING A TREND TOWARDS CONSOLIDATING INTO A
   BROKEN LINE EXTENDING FROM NEAR ANDERSON SC TO 40 MI ENE CHA.  
   
   WEAK BUT VEERING WIND PROFILE FROM 00Z FFC RAOB MAY BE MODULATED
   SOMEWHAT AS WEAK IMPULSE OVER THE TN VALLEY APPROACHES THE AREA
   TONIGHT.  MODERATE POTENTIAL INSTABILITY /MLCAPE 2000-3000 J/KG/ ON
   FFC RAOB AND AREA RUC FORECAST SOUNDINGS SUGGEST AMPLE BUOYANCY WILL
   BE IN PLACE ACROSS THE REGION INTO THE EARLY OVERNIGHT.  EXPECTING
   STORMS TO EXHIBIT A MORE SWD COMPONENT TO MOTION WITH TIME...INTO
   THE INSTABILITY AXIS POSING A CONTINUED THREAT FOR DMGG WINDS AND
   LARGE HAIL.
   
   ..SMITH.. 06/18/2009
   
   
   ATTN...WFO...CAE...GSP...MRX...FFC...
   
   LAT...LON   34908255 33928198 33148163 32958206 32788271 32758317
               33188387 33678430 34048444 34648463 35078475 35388478
               35638453 35548411 35118341 34908255