MESOSCALE DISCUSSION 0357
   NWS STORM PREDICTION CENTER NORMAN OK
   1121 PM CDT MON APR 04 2011
   
   AREAS AFFECTED...SC SWWD ACROSS GA...EXTREME SERN AL AND CNTRL/WRN
   FL PNHDL
   
   CONCERNING...TORNADO WATCH 98...
   
   VALID 050421Z - 050545Z
   
   THE SEVERE WEATHER THREAT FOR TORNADO WATCH 98 CONTINUES.
   
   ...TORNADO AND DAMAGING WIND THREATS CONTINUE...
   
   VWPS FROM JGX/EOX HAVE SHOWN A STEADY INCREASE IN 0-3KM FLOW WITH
   50+ KTS JUST ABOVE A HALF KILOMETER.  THIS HAS RESULTED IN LARGE
   LOOPING HODOGRAPHS AND GIVEN OVER 60 KTS OF EFFECTIVE VERTICAL
   SHEAR...SUPERCELLS WILL REMAIN POSSIBLE.  THIS WILL ESPECIALLY BE
   TRUE AS DISCRETE UPDRAFTS FORM IMMEDIATELY AHEAD OF THE SQUALL LINE
   AND MERGE.  BUT...SUSTAINED ROTATING STORMS ARE ALSO POSSIBLE WITHIN
   THE LINE ITSELF...ALTERNATING BETWEEN BOWS AND ROTATING COMMA HEADS
   WITH ATTENDANT DAMAGING WIND AND TORNADO RISKS.  
   
   FAIRLY SUBSTANTIAL LOW-LEVEL MOISTURE SURGE HAS BEEN NOTED SINCE 00Z
   ACROSS A LARGE PORTION OF THE TORNADO WATCH /AND FARTHER E IN THE
   CAROLINAS/...SO THE AIR MASS WILL REMAIN SUFFICIENTLY BUOYANT TO
   SUPPORT A SQUALL LINE WELL EWD INTO CAROLINAS...SERN GA AND AT LEAST
   THE CNTRL FL PNHDL THROUGH 09Z.  
   
   AS THE NRN FRINGES OF THE SQUALL LINE MOVE OFF THE HIGHER TERRAIN IN
   NE GA AND UPSTATE SC...ANOTHER WW WILL BE LIKELY ACROSS THE SC
   MIDLANDS SOON.
   
   ..RACY.. 04/05/2011
   
   
   ATTN...WFO...RAH...ILM...CAE...GSP...FFC...TAE...BMX...MOB...
   
   LAT...LON   30138709 33578401 33798373 33968336 33888274 34198153
               34788057 35688002 36097962 35997896 35277833 33977978
               33428107 33078212 31568356 29828518 30138709