MESOSCALE DISCUSSION 1052
   NWS STORM PREDICTION CENTER NORMAN OK
   0155 PM CDT THU JUN 11 2009
   
   AREAS AFFECTED...PARTS OF ERN AL / NRN GA / WRN SC-NC / ERN TN-KY /
   FAR SWRN VA
   
   CONCERNING...SEVERE THUNDERSTORM WATCH 376...
   
   VALID 111855Z - 112000Z
   
   THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 376
   CONTINUES.
   
   ENHANCED WIND DAMAGE THREAT WILL LIKELY CONTINUE THIS AFTERNOON WITH
   QLCS OVER THE WRN PART OF THE SRN APPALACHIANS.  FARTHER W ACROSS
   NRN GA AND ERN AL...SEMI DISCRETE STORMS IN A BROKEN LINE WILL POSE
   A LARGE HAIL THREAT IN ADDITION TO SPORADIC DMGG WINDS.
   
   WELL DEVELOPED MCV WILL CONTINUE TO MOVE EWD ACROSS ERN TN/KY THE
   NEXT FEW HOURS.  WATER VAPOR IMAGERY SHOWS A PRONOUNCED MID LEVEL
   DRY AIR SIGNATURE NOSING UP TO BACKSIDE OF MCV/EXTENSIVE SQUALL
   LINE.  THIS SHOULD AID IN EVAPORATIVELY ENHANCING DOWNDRAFTS.  AREAS
   AHEAD OF THE NRN PORTIONS OF SQUALL LINE /FAR ERN KY-SWRN VA-FAR ERN
   TN-WRN NC/ HAVE CLEARED AND THE AIRMASS IS DESTABILIZING IN WAKE OF
   EARLIER MORNING MCS.  THIS REGION IS LOCATED ON THE SRN FRINGE OF
   THE STRONGER WLYS AND...FORWARD PROPAGATING MCS CHARACTER WILL
   LIKELY BE MAINTAINED AT LEAST INTO THE LATE AFTERNOON HOURS. 
   MOREOVER...EXPECTING AN ENHANCED WIND DAMAGE SWATH ACROSS THIS AREA
   AS 35 KT MOVING QLCS TRAVERSES ENEWD THIS AFTERNOON.
   
   FAR S...STORMS AND THEIR ASSOCIATED COLD POOLS HAVE TENDED TO NOT
   CONGEAL AND EVOLVE INTO A MCS LIKE AREAS FURTHER N.  INTERMITTENT
   SUPERCELL STRUCTURE HAS BEEN OBSERVED IN THE PAST HOUR IN THE
   TRAILING PORTION OF THE BROKEN LINE OVER ERN AL.  MODIFIED 12Z/11
   FFC RAOB FOR RECENTLY OBSERVED UPPER 80S TEMP AND UPPER 60S
   DEWPOINTS YIELDS A STRONGLY CONVECTIVELY UNSTABLE AIRMASS /IN EXCESS
   OF 2500 J/KG MLCAPE/ IN ADVANCE OF ONGOING CONVECTION.  AS A
   RESULT...EXPECTING MORE OF A LARGE HAIL THREAT HERE WITH THE MORE
   ROBUST UPDRAFTS...IN ADDITION TO ISOLD DMGG WINDS.
   
   CONVECTION RECENTLY DEVELOPED IN LEE OF THE SRN APPALACHIANS OVER
   THE SC UPSTATE AND WRN NC.  THIS ACTIVITY WILL PROBABLY CONTINUE TO
   POSE AN ISOLD LARGE HAIL/DMGG WIND THREAT BEFORE BEING OVERTAKEN BY
   LARGER COMPLEX TO THE W LATER THIS AFTERNOON.
   
   ..SMITH.. 06/11/2009
   
   
   ATTN...WFO...RLX...CAE...GSP...MRX...JKL...FFC...BMX...
   
   LAT...LON   37278204 36548196 35088189 34188201 33788304 33288450
               33008558 33038615 33368624 33748603 33858541 34098481
               34538424 34858408 35538401 35988383 36648393 37158404
               37478374 37728304 37718246 37278204