MESOSCALE DISCUSSION 0884
   NWS STORM PREDICTION CENTER NORMAN OK
   0624 AM CDT SUN MAY 11 2008
   
   AREAS AFFECTED...EASTERN AL/NORTHERN FL AND CENTRAL/SOUTHERN GA INTO
   MUCH OF SC
   
   CONCERNING...TORNADO WATCH 304...305...
   
   VALID 111124Z - 111300Z
   
   THE SEVERE WEATHER THREAT FOR TORNADO WATCH 304...305...CONTINUES.
   
   TORNADO WATCH 304 CONTINUES UNTIL 14Z...AND TORNADO WATCH 305
   CONTINUES UNTIL 17Z. ACROSS THESE TORNADO WATCHES...THE MAIN IMPACT
   WILL BE WITH THE APPARENT DERECHO RACING FROM CENTRAL/EASTERN GA
   INTO SOUTHERN SC...WITH WIDESPREAD WIND/POSSIBLE TORNADO DAMAGE
   LIKELY OVER THE NEXT SEVERAL HOURS.
   
   IMPRESSIVE MCS/APPARENT DERECHO CONTINUES TO RACE EASTWARD AT 60-65
   KT ACROSS CENTRAL INTO EASTERN GA EARLY THIS MORNING. THIS
   MATURE/WELL-ORGANIZED SQUALL LINE CONTINUES TO EXHIBIT CLASSIC REAR
   INFLOW/VERY STRONG VELOCITIES...WITH EVIDENT 1000 MB MESOLOW ACROSS
   CENTRAL GA. OWING TO A VERY FAVORABLE SHEAR/INSTABILITY
   ENVIRONMENT...AND THE SPEED/ORGANIZATION OF THIS MESOSCALE
   SYSTEM...THIS APPARENT DERECHO WILL CONTINUE TO RACE EASTWARD WITH A
   SIGNIFICANT SEVERE THREAT ACROSS THE REMAINDER OF EASTERN GA INTO
   SOUTHERN SC OVER THE NEXT SEVERAL HOURS. WIDESPREAD WIND/POSSIBLE
   TORNADO DAMAGE IS HIGHLY LIKELY...ESPECIALLY IN AREAS ALONG/NORTH OF
   INTERSTATE 16.
   
   OTHERWISE...A SUPERCELL/POSSIBLE TORNADO RISK CONTINUES TO BE
   FOCUSED ALONG THE WARM FRONT IN SC. FARTHER WEST...IN WAKE OF THE
   CENTRAL GA MCS...NEW DEVELOPMENT MAY POSE AN ISOLATED SEVERE RISK
   ACROSS CENTRAL AL INTO GA...AS THE SURFACE COLD FRONT ADVANCES
   SOUTHEASTWARD AND/OR DEVELOPMENT OCCURS WITH THE LOW LEVEL JET
   IMPINGING ON RESIDUAL OUTFLOW.
   
   ..GUYER.. 05/11/2008