SPC MESOSCALE DISCUSSION 0825 FOR CENTRAL AND NRN FL...AND EXTREME
   SERN GA
   CONCERNING...SEVERE THUNDERSTORM POTENTIAL...
   
   VALID 171540Z - 171900Z
   
   CONVECTION IS EXPECTED TO DEVELOP ALONG FL/EXTREME SERN GA
   SEABREEZES BETWEEN 16-18Z. POTENTIAL EXISTS FOR PULSE SEVERE
   THUNDERSTORMS...PARTICULARLY ACROSS CENTRAL/NRN FL...AND EXTREME
   SERN GA THIS AFTERNOON INTO THE EARLY EVENING. 
   
   SURFACE DEWPOINTS HAVE INCREASED 5-10F SINCE LATE YESTERDAY MORNING
   WITH READINGS IN THE LOW 70S ACROSS THE DISCUSSION AREA AT 16Z.
   PRESENCE OF RELATIVELY COOL MID-LEVEL TEMPERATURES...WITH -11C AT
   500MB ON JAX 12Z SOUNDING...AND RICH BOUNDARY LAYER MOISTURE WILL
   CONTRIBUTE TO 100MB MLCAPES OF 2000-3000 J/KG BY 17/18-20Z AS
   INSOLATION CONTINUES. A COOLER 700-300MB THERMODYNAMIC PROFILE
   SUGGESTS MOST INTENSE STORMS WILL BE FOCUSED ACROSS E-CENTRAL FL
   NWD INTO NERN FL BASED ON MORNING SOUNDINGS. MINIMAL CONVECTIVE
   INHIBITION AND ANTICIPATED STRONG CONVERGENCE ALONG DEVELOPING E-
   COAST SEABREEZE IS EXPECTED TO RESULT IN A FOCUSED AREA OF
   SCATTERED TO NUMEROUS THUNDERSTORMS. DEEP LAYER SHEAR OF 20-25KT IS
   RELATIVELY WEAK FOR ORGANIZED STORMS...HOWEVER...MULTICELLULAR
   CONVECTION ALONG LOW-LEVEL CONVERGENCE AXES WITH SEABREEZE OR LATER
   CONVECTIVE OUTFLOW BOUNDARIES WILL LIKELY BE SUFFICIENT FOR LOCALLY
   SEVERE HAIL AND BRIEF DAMAGING WET MICROBURSTS WITH STRONGER RADAR
   REFLECTIVELY/VIL CORES.  
   
   ..BANACOS.. 05/17/02