MESOSCALE DISCUSSION 0045
   NWS STORM PREDICTION CENTER NORMAN OK
   0620 PM CST TUE JAN 25 2011
   
   AREAS AFFECTED...CNTRL/SRN FL
   
   CONCERNING...TORNADO WATCH 7...
   
   VALID 260020Z - 260115Z
   
   THE SEVERE WEATHER THREAT FOR TORNADO WATCH 7 CONTINUES.
   
   QLCS/DISCRETE SUPERCELLS CONTINUE TO PROPAGATE ESE ACROSS CNTRL/SW
   FL...WELL-AHEAD OF MESOSCALE MODEL TIMING.  PRIMARY UNCERTAINTY FOR
   THE NEXT FEW HOURS WILL BE HOW FAR S THE SEVERE THREAT WILL EVOLVE. 
   
   
   HIGHEST POTENTIAL FOR TORNADOES AND DAMAGING WIND GUSTS WILL EXIST
   FROM AREAS NW-N OF LAKE OKEECHOBEE INTO THE VERO BEACH-MELBOURNE
   REGION THROUGH 01Z.  HERE...CORE OF SSWLY LLJ OF 40-50 KTS
   EXISTS...YIELDING STRONGLY VEERING 0-1KM PROFILES WITH SRH OF
   350-400 M2/S2 BASED OFF THE MLB VWP.  
   
   STRONGEST PORTION OF THE LLJ WILL BEGIN SHIFTING NE AWAY FROM FL BY
   LATE EVENING AS THE SRN STREAM WAVE ACCELERATES ENE. AIR MASS ACROSS
   S FL WILL REMAIN UNSTABLE...AND WITH AT LEAST WEAK HEIGHT FALLS
   SPREADING ACROSS THE REGION...THUNDERSTORMS WILL REMAIN POSSIBLE S
   OF THE CURRENT WATCH THIS EVENING.  WIND PROFILES BECOME
   INCREASINGLY VEERED WITH TIME WITH AT LEAST 35-40 KTS OF H85-H7
   FLOW.  THIS SUGGESTS THAT STORMS MAY AT LEAST POSE AN ISOLATED
   DAMAGING WIND THREAT ACROSS S FL.
   
   ..RACY.. 01/26/2011
   
   
   ATTN...WFO...MFL...MLB...TBW...
   
   LAT...LON   26388254 27728147 28358081 28658059 28408018 27318009
               26298054 25838133 25798198 26138246 26388254