MESOSCALE DISCUSSION 0138
   NWS STORM PREDICTION CENTER NORMAN OK
   0606 AM CST THU FEB 19 2009
   
   AREAS AFFECTED...NRN FL
   
   CONCERNING...TORNADO WATCH 30...
   
   VALID 191206Z - 191300Z
   
   THE SEVERE WEATHER THREAT FOR TORNADO WATCH 30 CONTINUES.
   
   ISOLATED STRONG WIND GUSTS REMAIN POSSIBLE ACROSS NRN FL THROUGH
   14Z...WHILE TORNADO THREAT DIMINISHES.
   
   REGIONAL RADAR IMAGERY SHOWED A WELL DEFINED LINE OF STORMS MOVING
   EWD ACROSS THE NRN FL PENINSULA AT 35-40 KT...WITH THE LINE
   EXTENDING FROM SRN DUVAL COUNTY TO DIXIE COUNTY.  RECENT SURFACE
   OBSERVATIONS WITH THE PASSAGE OF THESE TSTMS HAVE INDICATED
   SUB-SEVERE GUSTS WHILE THE LINE HAS BEEN UNDERGOING DECELERATION. 
   THESE TRENDS COMBINED WITH VERY WEAK INSTABILITY /MUCAPE AROUND 500
   J/KG/ PRECEDING THE ACTIVITY OVER NRN FL WOULD SUGGEST THAT THE
   OVERALL SEVERE WEATHER THREAT SHOULD CONTINUE TO DIMINISH. 
   HOWEVER...AN ISOLATED STRONGER WIND GUST CAN NOT BE RULED
   OUT...GIVEN STORM MOTIONS OF 35-40 KT.
   
   VEERED LOW LEVEL FLOW /I.E. MORE PARALLEL TO THE LINE OF STORMS/
   SHOULD CONTINUE TO REDUCE THE SIZE OF LOW LEVEL HODOGRAPHS...AND
   THUS LIMIT THE TORNADO POTENTIAL.
   
   ..PETERS.. 02/19/2009
   
   
   ATTN...WFO...TBW...JAX...TAE...
   
   LAT...LON   29528387 29808289 30088222 30368149 30588107 29968092
               29568145 29428248 29188353 29528387