MESOSCALE DISCUSSION 0982
   NWS STORM PREDICTION CENTER NORMAN OK
   0454 PM CDT THU JUN 06 2013

   AREAS AFFECTED...COASTAL PLAIN OF GA AND SC

   CONCERNING...SEVERE POTENTIAL...WATCH POSSIBLE 

   VALID 062154Z - 062330Z

   PROBABILITY OF WATCH ISSUANCE...60 PERCENT

   SUMMARY...THE AREA IS BEING MONITORED FOR THE POSSIBLE ISSUANCE OF A
   TORNADO WATCH.

   DISCUSSION...A CLUSTER OF LOW-TOPPED...SEMI-DISCRETE...TRANSIENT
   SUPERCELLS WITHIN AN OUTER CONVECTIVE BAND IN THE NERN QUADRANT OF
   TROPICAL STORM ANDREA IS ADVANCING NWD FROM WARE COUNTY TO CAMDEN
   COUNTY IN SERN GA. THIS ACTIVITY LIES NEAR/E OF A SUBTLE WIND-SHIFT
   AXIS EXTENDING NEWD FROM ANDREA. RELATIVELY HIGHER THETA-E EXISTS E
   OF THIS AXIS OWING TO THE ONSHORE FLOW COMPONENT AND ACCOMPANYING
   INLAND TRANSPORT OF A WARMER/MORE MOIST AIR MASS EMANATING FROM THE
   WATERS OFF THE ATLANTIC COAST. HOWEVER...BUOYANCY IS ONLY 
   MARGINAL -- I.E. MLCAPE AROUND 500 J/KG -- OWING TO WIDESPREAD
   THETA-E DEFICITS ACCOMPANYING A BROAD SHIELD OF LEADING
   PRECIPITATION.

   REGARDLESS...THERE WILL BE SOME POTENTIAL FOR SUFFICIENT BUOYANCY TO
   EXTEND NEWD ALONG THE COASTAL PLAIN OF GA INTO SC THROUGH TO SUPPORT
   CONVECTION -- WITH ADDITIONAL FEEDER BANDS POTENTIALLY MOVING INTO
   THE AREA THIS EVENING FROM NRN FL -- AS ANDREA AND ITS NERN QUADRANT
   MOVE NEWD. AT LEAST MODEST LOW-LEVEL SHEAR EXISTS PER JAX AND CLX
   VWP DATA -- AIDED BY VERTICALLY VEERING WIND PROFILES IN THE LOWEST
   3 KM AGL -- SUPPORTING 0-1-KM SRH OF 100-150 M2/S2 AFTER ACCOUNTING
   FOR OBSERVED STORM MOTIONS. AS SUCH...A TORNADO THREAT MAY EXTEND
   NEWD OVER THE GA/SC COASTAL PLAIN...POTENTIALLY REQUIRING ISSUANCE
   OF A TORNADO WATCH.

   ..COHEN/MEAD.. 06/06/2013


   ATTN...WFO...CHS...JAX...

   LAT...LON   31368132 31368185 31058247 31108272 31308255 31828207
               32698118 33178047 33037966 32887964 32488020 31938102
               31368132