MESOSCALE DISCUSSION 0129
   NWS STORM PREDICTION CENTER NORMAN OK
   0526 PM CST WED FEB 18 2009
   
   AREAS AFFECTED...MUCH OF GA INTO SC
   
   CONCERNING...TORNADO WATCH 25...
   
   VALID 182326Z - 190100Z
   
   THE SEVERE WEATHER THREAT FOR TORNADO WATCH 25 CONTINUES.
   
   TORNADO WATCH 25 CONTINUES UNTIL 04Z...WITH A RISK OF TORNADOES AS
   WELL AS LARGE HAIL/DAMAGING WINDS. ALTHOUGH QUESTIONS EXIST
   REGARDING DOWNSTREAM INSTABILITY ACROSS SOUTHEAST/COASTAL GA AND
   CENTRAL/COASTAL SC...WILL CLOSELY MONITOR FOR THE POSSIBILITY OF AN
   ADDITIONAL WATCH GIVEN THE FAST MOVING NATURE OF THE UPSTREAM TSTMS
   ACROSS GA.
   
   POTENTIALLY TORNADIC SUPERCELLS WILL CONTINUE TO QUICKLY SPREAD
   EASTWARD ESPECIALLY ACROSS NORTH CENTRAL/CENTRAL GA OVER THE NEXT
   FEW HOURS...AND PERHAPS INTO EASTERN GA AND UPSTATE SC. AS OF
   2330Z...THE MOST PROLIFIC SUPERCELLS/POSSIBLE TORNADOES WITHIN
   TORNADO WATCH 25 ARE OCCURRING NEAR THE ATLANTA METRO ALONG/SOUTH OF
   I-20. LATEST SURFACE ANALYSIS REFLECTS A SOUTHWESTERLY MOIST LOW
   LEVEL INFLUX ACROSS AL/GA...WITH SPATIALLY MAXIMIZED PRESSURE FALLS
   AND LOCALLY BACKED SURFACE FLOW ACROSS NORTH CENTRAL/NORTHEAST GA
   ALONG/SOUTH OF A WEDGE-WARM FRONT. AS SUCH...OVERALL KINEMATIC
   SCENARIO WILL REMAIN FAVORABLE FOR QUASI-DISCRETE SUPERCELLS CAPABLE
   OF TORNADOES OVER THE NEXT SEVERAL HOURS. ASIDE FROM THE TORNADO
   RISK...AMPLE SHEAR FOR UPDRAFT ROTATION AND STRONG EARLY SEASON
   LAPSE RATES WILL SUPPORT A RISK OF LARGE HAIL WITH THE
   STRONGEST/MOST SUSTAINED STORMS.
   
   ..GUYER.. 02/18/2009
   
   
   ATTN...WFO...CHS...CAE...GSP...JAX...FFC...TAE...BMX...
   
   LAT...LON   34448455 34088322 33928149 33038100 31708265 31398553
               32058605 34448455