MESOSCALE DISCUSSION 0321
   NWS STORM PREDICTION CENTER NORMAN OK
   0839 AM CDT THU MAR 31 2011
   
   AREAS AFFECTED...FL PENINSULA
   
   CONCERNING...TORNADO WATCH 80...
   
   VALID 311339Z - 311445Z
   
   THE SEVERE WEATHER THREAT FOR TORNADO WATCH 80 CONTINUES.
   
   ALTHOUGH A SURFACE LOW WAS LOCATED IN THE FAR NERN GULF OF MEXICO
   AND A STATIONARY FRONT STRETCHED ACROSS THE NRN FL PENINSULA...THE
   EFFECTIVE BOUNDARY FOR THE MOST INTENSE SEVERE CONVECTION STRETCHED
   E-W FROM APPROXIMATELY 30 N PIE TO 30 MLB. ALONG AND NORTH OF THE
   BOUNDARY...EXTENSIVE CLOUDS...RAIN AND SEVERE STORMS WERE
   OCCURRING...WHILE MOSTLY SUNNY SKIES WERE LOCATED SOUTH. STORMS ARE
   EXPECTED TO KEEP TRACKING EWD FROM THE GULF THROUGH THE CENTRAL
   PENINSULA...WITH THE BOUNDARY GRADUALLY BEING PUSHED SWD DUE TO
   OUTFLOW FROM THE PCPN. GIVEN DEEP LAYER SHEAR NEAR 60 KT...
   SUPERCELLS AND MODERATE INSTABILITY SOUTH OF THE BOUNDARY...
   SUPERCELLS ARE LIKELY. WIND PROFILES FAVOR BOTH SUPERCELLS WITH
   TORNADOES...ESPECIALLY ALONG THE EFFECTIVE BOUNDARY WHERE 35-40 KT
   LOW LEVEL SHEAR EXISTS...AND BOW ECHOES WITH WIND DAMAGE. GREATEST
   TORNADO THREAT THE NEXT HOUR OR SO WILL BE ASSOCIATED WITH INTENSE
   SUPERCELL MOVING EWD AT 50 KT THROUGH POLK COUNTY TOWARD OSCEOLA AND
   EVENTUALLY BREVARD COUNTIES.
   
   ..IMY.. 03/31/2011
   
   
   ATTN...WFO...MFL...MLB...TBW...JAX...TAE...
   
   LAT...LON   29308321 27888268 26458204 26398080 26457971 28158033
               29308073 29368195 29308321