MESOSCALE DISCUSSION 0958
   NWS STORM PREDICTION CENTER NORMAN OK
   0945 AM CDT SAT JUN 06 2009
   
   AREAS AFFECTED...CNTRL/SRN FL PEN
   
   CONCERNING...OUTLOOK UPGRADE 
   
   VALID 061445Z - 061615Z
   
   STORM DEVELOPMENT TODAY MAY BE ACCOMPANIED BY THE RISK FOR LARGE
   HAIL AND DAMAGING WIND GUSTS...PERHAPS AN ISOLATED TORNADO IN THE
   VICINITY OF THE EAST COAST.  SEVERE PROBABILITIES WILL BE
   INCREASED...WITH A SLIGHT RISK ADDED FOR AREA IN THE FORTHCOMING
   1630Z OUTLOOK.
   
   RELATIVELY COOL MID-LEVEL TEMPERATURES ASSOCIATED WITH A SLOW MOVING
   UPPER TROUGH...NOW OVER THE FLORIDA PENINSULA...ARE EXPECTED TO
   CONTRIBUTE TO MODERATELY STRONG INSTABILITY...AS A MOIST ENVIRONMENT
   WARMS WITH SURFACE HEATING.  DESTABILIZATION IS EXPECTED TO SUPPORT
   WIDELY SCATTERED STORM DEVELOPMENT ACROSS THE PENINSULA THROUGH
   EARLY AFTERNOON...BEFORE ACTIVITY BECOMES MORE WIDESPREAD DURING THE
   18-21Z TIME FRAME.  AS 10-20 KT SOUTHWESTERLY LOWER/MID TROPOSPHERIC
   FLOW MIXES TO THE SURFACE...IT WOULD SEEM HIGHEST STORM
   PROBABILITIES WILL EXIST ACROSS EASTERN INTERIOR AND COASTAL AREAS. 
   MID-LEVEL FLOW FIELDS MAY BE STRONG ENOUGH TO ONCE AGAIN SUPPORT
   SUFFICIENT DEEP LAYER SHEAR FOR ISOLATED SUPERCELLS...PARTICULARLY
   NEAR THE EAST COAST SEA BREEZE.
   
   ..KERR.. 06/06/2009
   
   
   ATTN...WFO...MFL...MLB...KEY...TBW...JAX...
   
   LAT...LON   28628159 29238149 29778123 29328088 28448043 27358003
               26757988 25747996 25298017 25268101 25888119 26198160
               26998214 27578242 28108194 28628159