MESOSCALE DISCUSSION 1604
   NWS STORM PREDICTION CENTER NORMAN OK
   1128 AM CDT SAT JUL 28 2007
   
   AREAS AFFECTED...FL...GA...SC
   
   CONCERNING...SEVERE POTENTIAL...WATCH LIKELY 
   
   VALID 281628Z - 281800Z
   
   SEVERE STORMS WITH LARGE HAIL AND LOCALLY DAMAGING/STRONG WET
   MICRO-BURSTS ARE LIKELY TO DEVELOP OVER PARTS OF SRN GA...NRN
   FL...AND PERHAPS SRN SC IN THE NEXT COUPLE OF HOURS. A SEVERE TSTM
   WATCH IS LIKELY WITHIN THE HOUR AS THIS ACTIVITY INCREASES.
   
   VERY MOIST AND INCREASINGLY HOT AIR MASS ACROSS THE REGION WILL
   CONTRIBUTE TO THE DEVELOPMENT OF LOCALLY EXTREME INSTABILITY OVER
   THE NEXT FEW HOURS. WEAK CAP AND LARGE SCALE LIFT ASSOCIATED WITH
   DECAYING MCS AND DIFFLUENT FLOW ALOFT WILL AID ROBUST TO EXPLOSIVE
   CONVECTIVE GROWTH GIVEN MLCAPE VALUES APPROACHING 3000 J/KG. DESPITE
   GENERALLY WEAK SHEAR...MAGNITUDE OF INSTABILITY AND BACKGROUND
   FORCING FOR ASCENT SHOULD SUPPORT NUMEROUS SEVERE...PRIMARILY
   MULTICELLULAR...STORMS. CELL MERGERS AND BOUNDARY INTERACTIONS MAY
   ENHANCE SHEAR/INFLOW ON THE STORM SCALE WITH AN INCREASING THREAT
   FOR HAIL/DAMAGING WINDS...AND PERHAPS EVEN A BRIEF TORNADO.
   ANTICIPATED STORM COVERAGE APPEARS SUFFICIENT TO JUSTIFY A WATCH
   ACROSS THE AREA.
   
   ..CARBIN.. 07/28/2007
   
   
   ATTN...WFO...CHS...MLB...TBW...JAX...FFC...TAE...
   
   29078112 28668231 30548355 30838419 31178478 31578492
   31978495 32158471 32628461 32558417 32388304 32438217
   32977968 31018137