MESOSCALE DISCUSSION 2230
   NWS STORM PREDICTION CENTER NORMAN OK
   1129 PM CST SAT DEC 15 2007
   
   AREAS AFFECTED...GA...SC...FL
   
   CONCERNING...TORNADO WATCH 739...
   
   VALID 160529Z - 160730Z
   
   THE SEVERE WEATHER THREAT FOR TORNADO WATCH 739 CONTINUES.
   
   TORNADO/WIND DAMAGE POTENTIAL WILL REMAIN A POSSIBILITY ACROSS PARTS
   OF NRN FL...SERN GA...AND SRN SC THROUGH LATE TONIGHT.
   
   SEVERAL CYCLING MESOCYCLONES EMBEDDED WITHIN SQUALL LINE LEWPS HAVE
   BEEN TRACKING ACROSS PARTS OF NRN FL AND SRN GA OVER THE PAST FEW
   HOURS. THESE STORMS ARE PART OF A LARGER COMPLEX OF DEEP CONVECTION
   AHEAD OF A VIGOROUS SHORT WAVE TROUGH CROSSING THE LOWER MS VALLEY
   AND NRN GULF COAST. A SHARP WARM/COASTAL FRONT HAS MOVED INLAND
   ACROSS SRN SC. MARITIME TROPICAL AIR MASS HAS FUELED A STOUT
   LONG-LIVED UPDRAFT...NOW APPARENTLY WEAKENING AND TRACKING TOWARD
   BAMBERG/ORANGEBURG COUNTIES IN SCNTRL SC. ALTHOUGH INSTABILITY AND
   LIGHTNING HAVE BEEN LIMITED WITH THIS ACTIVITY...SHEAR AND MESOSCALE
   FORCING ALONG/NEAR THE FRONT ARE APPARENTLY SUFFICIENT TO SUSTAIN
   OCCASIONAL LOW LEVEL STORM ROTATION.
   
   MEANWHILE...FARTHER SOUTH AND WEST...COOLING CLOUD TOPS AND MORE
   LIGHTNING ACTIVITY ARE ASSOCIATED WITH THE SQUALL LINE MOVING EAST
   ACROSS NRN FL...AND THE FORMER TROPICAL SYSTEM OLGA OVER THE NERN
   GULF. AREA RADARS DEPICT A MASS OF STRONG STORMS WILL CONTINUE TO
   SPREAD INLAND FROM THE NERN GULF AND ACROSS MUCH OF TORNADO WATCH
   739 INTO EARLY SUNDAY. WIND PROFILES ARE ALREADY SUPPORTIVE OF
   ORGANIZED FAST-MOVING STORMS THAT COULD PRODUCE DAMAGING WINDS. LOW
   LEVEL SHEAR MAY STRENGTHEN FURTHER AND RESULT IN AN ENHANCED TORNADO
   THREAT...AS THE TROPICAL CIRCULATION NEARS THE COAST SEVERAL HOURS
   FROM NOW.
   
   ..CARBIN.. 12/16/2007
   
   
   ATTN...WFO...ILM...CHS...CAE...MLB...TBW...JAX...FFC...TAE...
   
   31888284 32028226 32568210 32848195 33158123 33488002
   32937883 31668074 30588109 29508079 29468113 28818081
   28748165 28288164 28258208 27198208 27118264 27968308
   28778302 29188346 29998410 30838372 31658347 31828335