MESOSCALE DISCUSSION 1448
   NWS STORM PREDICTION CENTER NORMAN OK
   1203 PM CDT WED JUL 11 2007
   
   AREAS AFFECTED...SRN AND ERN AL THROUGH CNTRL AND S CNTRL GA AND WRN
   SC
   
   CONCERNING...SEVERE POTENTIAL...WATCH POSSIBLE 
   
   VALID 111703Z - 111900Z
   
   THREAT FOR MAINLY ISOLATED DAMAGING WIND GUSTS AND MARGINALLY SEVERE
   HAIL WILL EXIST WITH STORMS DEVELOPING FROM SRN AND ERN AL THROUGH
   MUCH OF CNTRL GA INTO SC THIS AFTERNOON.
   
   A SHORTWAVE TROUGH AXIS EXTENDS FROM THE SRN APPALACHIANS SSWWD
   THROUGH CNTRL AL AND IS MOVING EWD. THE ATMOSPHERE HAS BECOME
   MODERATELY UNSTABLE DOWNSTREAM FROM THIS FEATURE FROM SRN AL THROUGH
   CNTRL GA AND SC. DESPITE PRESENCE OF RICH LOW LEVEL MOISTURE...THE
   WEAK 700-500 MB LAPSE RATES AROUND 5.5 C/KM WILL CONTINUE TO LIMIT
   OVERALL DEGREE OF INSTABILITY WITH MLCAPE FROM 1500 TO 2000 J/KG.
   ZONE OF ASCENT ACCOMPANYING THE SHORTWAVE TROUGH AND WEAK CAP WILL
   CONTINUE TO SUPPORT THUNDERSTORM DEVELOPMENT AS THE BOUNDARY LAYER
   DESTABILIZES. A BELT OF 35 TO 40 KT FLOW IN THE 2-5 KM LAYER
   ATTENDING THE UPPER TROUGH WITH UNIDIRECTIONAL DEEP LAYER WLY WINDS
   WILL SUPPORT A THREAT FOR ISOLATED DAMAGING WINDS WITH MULTICELL
   STORMS...ESPECIALLY AS LOW LEVEL LAPSE RATES CONTINUE TO STEEPEN.
   
   ..DIAL.. 07/11/2007
   
   
   ATTN...WFO...CHS...CAE...GSP...FFC...TAE...BMX...MOB...
   
   32508654 34738261 34358086 33118064 31878307 31228577