MESOSCALE DISCUSSION 0432
   NWS STORM PREDICTION CENTER NORMAN OK
   0229 PM CDT FRI APR 10 2009
   
   AREAS AFFECTED...NRN AND CNTRL GA
   
   CONCERNING...SEVERE POTENTIAL...WATCH LIKELY 
   
   VALID 101929Z - 102100Z
   
   STORMS ARE EXPECTED TO DEVELOP EWD INTO NRN AND CNTRL GA LATER THIS
   AFTERNOON AND EVENING. THREAT WILL EXIST FOR SUPERCELLS CAPABLE OF
   PRODUCING LARGE HAIL AND TORNADOES...A FEW OF WHICH COULD BE STRONG.
   DAMAGING WIND WILL ALSO BE POSSIBLE WITH SOME OF THE STORMS. A WW
   WILL LIKELY BE NEEDED BY 20-21Z.
   
   PRE-FRONTAL LINE OF MOSTLY DISCRETE SUPERCELLS EXTENDS FROM MIDDLE
   TN SSWWD THROUGH NRN AL MOVING EAST AT 40-45 KT. A CONVECTIVELY
   ENHANCED BOUNDARY EXTENDS FROM NRN SC THROUGH NE GA INTO ERN TN.
   SOUTH OF THESE FEATURES...OTHER PRE-FRONTAL CONVERGENCE BOUNDARIES
   MANIFESTED BY CLOUD STREETS EXIST OVER MUCH OF THE WARM SECTOR
   ACROSS CNTRL AL EXTENDING INTO WRN GA. LATEST OBJECTIVE ANALYSIS AND
   THE 18Z RAOB FROM BIRMINGHAM AND ATLANTA INDICATES MINIMAL TO NO CAP
   IN WARM SECTOR. THEREFORE...DESPITE A TENDENCY FOR THE STRONGER DEEP
   FORCING ASSOCIATED WITH THE EWD ADVANCING SHORTWAVE TROUGH TO REMAIN
   FARTHER NORTH OVER THE TN VALLEY...CONVECTIVE INITIATION MAY OCCUR
   AS FAR SOUTH AS NORTH CNTRL GA AS THE BOUNDARY LAYER DESTABILIZES
   EWD WITH TIME. THE COUPLED LOW-MID LEVEL JET STRUCTURE ATTENDING THE
   SHORTWAVE TROUGH WILL MAINTAIN FAVORABLE WIND PROFILES WITH BULK
   SHEAR 50+ KT AND 0-1 KM STORM RELATIVE HELICITY FROM 200-300 M2/S2
   INTO THE EARLY EVENING. THIS ENVIRONMENT WILL SUPPORT ORGANIZED
   STORMS INCLUDING SUPERCELLS CAPABLE OF PRODUCING VERY LARGE HAIL AND
   TORNADOES.
   
   ..DIAL.. 04/10/2009
   
   
   ATTN...WFO...GSP...FFC...BMX...
   
   LAT...LON   34948457 34638398 34378351 34148286 33278350 32848474
               33498564 34758503 34948457