MESOSCALE DISCUSSION 2185
   NWS STORM PREDICTION CENTER NORMAN OK
   0507 PM CDT TUE SEP 07 2004
   
   AREAS AFFECTED...EXTREME ERN GA...SC AND SERN NC
   
   CONCERNING...TORNADO WATCH 809...810...
   
   VALID 072207Z - 072300Z
   
   THE THREAT FOR ISOLATED TORNADOES IS EXPECTED TO PERSIST INTO THE
   EVENING. THEREFORE...TORNADO WATCHES 809 AND 810 WILL BE REPLACED
   SHORTLY BY ANOTHER TORNADO WATCH FOR PARTS OF EXTREME ERN GA...MUCH
   OF SC...INTO PARTS OF SRN NC.
   
   TROPICAL DEPRESSION FRANCES WAS NEARING CNTRL GA AND CONTINUES
   MOVING IN A GENERAL NWD DIRECTION. SEE DISCUSSIONS FROM HPC FOR
   ADDITIONAL INFORMATION. A SUBTLE BOUNDARY EXTENDS THROUGH N CNTRL
   SC. AN INFLUX OF WARM MOIST AIR FROM THE GULF STREAM CONTINUES
   ADVECTING NWWD INTO MUCH OF SC AND SRN NC...AND LATEST VISIBLE
   IMAGERY CONTINUES TO SHOW A ZONE OF PARTIAL CLEARING ADVECTING NWD
   INTO THE SRN HALF OF THIS STATE. STRONG LOW LEVEL SHEAR WITH 0-1 KM
   STORM RELATIVE HELICITY IN EXCESS OF 300 M2/S2 PERSIST E OF THE
   CENTER OF FRANCES AND ESPECIALLY ALONG AND N OF THE E-W BOUNDARY
   OVER SC. GREATEST THREAT FOR ISOLATED TORNADOES SHOULD CONTINUE WITH
   SUPERCELL STORMS THAT DEVELOP IN THE HIGHER LOW LEVEL THETA-E REGIME
   OVER SC AND SRN NC AS THEY MOVE NWD AND INTERACT WITH THE BOUNDARY.
   THOUGH AN OVERALL DECREASE IN ACTIVITY MAY OCCUR LATER THIS EVENING
   AS THE BOUNDARY LAYER STABILIZES...SOME THREAT FOR ISOLATED
   TORNADOES IS EXPECTED TO PERSIST WELL INTO TONIGHT.
   
   ..DIAL.. 09/07/2004
   
   
   ATTN...WFO...RAH...ILM...CHS...CAE...GSP...FFC...
   
   34257778 33787869 33067947 32328078 31658155 33658256
   34918326 35097861