MESOSCALE DISCUSSION 2253
   NWS STORM PREDICTION CENTER NORMAN OK
   0118 PM CDT THU OCT 13 2011
   
   AREAS AFFECTED...CNTRL GA...SERN AL...FL PANHANDLE
   
   CONCERNING...SEVERE POTENTIAL...WATCH POSSIBLE 
   
   VALID 131818Z - 131945Z
   
   LATEST SATELLITE/RADAR IMAGERY SUGGEST WEAK UPPER VORT HAS MIGRATED
   EWD ALONG THE TN/AL BORDER TO A POSITION JUST WEST OF CHA.  THIS
   FEATURE APPEARS TO BE ENHANCING THE LARGE SCALE ASCENT AND ONGOING
   CONVECTIVE DEVELOPMENT ACROSS ERN AL/WRN GA.  THIS ACTIVITY IS
   EVOLVING ALONG NERN PLUME OF MARGINAL INSTABILITY...THOUGH STEEP LOW
   LEVEL LAPSE RATES ARE IN PLACE NEAR THE GULF COAST.  FOR THIS REASON
   IT WOULD SEEM THAT TSTM UPDRAFTS MAY BRIEFLY ATTAIN SEVERE LEVELS OR
   AT LEAST EXHIBIT SOME STRENGTH FROM TIME TO TIME AS DEEP LAYER
   VERTICAL SHEAR IS MORE THAN ADEQUATE FOR ORGANIZATION.  NE-SW
   ORIENTED LINE SEGMENTS COULD PRODUCE GUSTY WINDS IN EXCESS OF 50 MPH
   AND HAIL COULD APPROACH DIME SIZE WITHIN THE STRONGER CORES.
   
   ..DARROW.. 10/13/2011
   
   
   ATTN...WFO...FFC...TAE...BMX...MOB...
   
   LAT...LON   31868672 33268413 32358290 30668550 31868672