MESOSCALE DISCUSSION 0313
   NWS STORM PREDICTION CENTER NORMAN OK
   0425 AM CDT SAT MAR 28 2009
   
   AREAS AFFECTED...SERN MS/MUCH OF CENTRAL AND SRN AL/FL
   PANHANDLE/SWRN GA
   
   CONCERNING...TORNADO WATCH 84...85...86...
   
   VALID 280925Z - 281000Z
   
   THE SEVERE WEATHER THREAT FOR TORNADO WATCH
   84...85...86...CONTINUES.
   
   THREAT FOR MAINLY STRONG WIND GUSTS EXISTS ACROSS EAST CENTRAL MS
   INTO CENTRAL AL THIS MORNING AS LINE OF TSTMS MOVES ENEWD AT 40-45
   KT.  NRN PORTION OF WW 84...WHICH IS SCHEDULED TO EXPIRE AT
   10Z...WILL LIKELY BE REPLACED WITH A SEVERE TSTM WATCH. 
   MEANWHILE...SRN EXTENT OF WW 84 AND ALL OF WW 85 WILL BE REPLACED
   WITH A NEW TORNADO WATCH.
   
   REGIONAL RADARS INDICATED A LINE OF TSTMS EXTENDING FROM EAST
   CENTRAL MS SSWWD INTO FAR SERN LA...WITH THE MOST INTENSE PORTION OF
   THE LINE LOCATED WITHIN THE ERN PART OF WW 86 /KEMPER TO CLARKE
   COUNTIES MS/.  EARLY MORNING SURFACE ANALYSIS INDICATED THE SRN
   EXTENT OF THE LINE OF TSTMS IN LA WAS LIKELY LOCATED ALONG THE EWD
   ADVANCING COLD FRONT WHICH EXTENDED FROM THE WRN GULF INTO SERN
   LA...AND THEN NWWD THROUGH SWRN MS TO AR.  A WARM FRONT EXTENDED EWD
   FROM SERN MS INTO THE FL PANHANDLE.
   
   AIR MASS N OF THE WARM FRONT INTO CENTRAL AL IS CONTINUING TO SLOWLY
   DESTABILIZE...AND MAY SUPPORT STRONGER WINDS TO REACH THE GROUND AS
   THE LINE OF TSTMS IN ERN MS ADVANCE EWD INTO CENTRAL AL.
   
   FARTHER S...SLY LOW LEVEL FLOW WILL CONTINUE TO MAINTAIN AN UNSTABLE
   AIR MASS ALONG THE E-W ORIENTED WARM FRONT...WITH LOW LEVEL FLOW
   EXPECTED TO STRENGTHEN FROM AL INTO FL PANHANDLE/GA THIS MORNING. 
   THIS WILL SUPPORT CONTINUATION OF STRONG LOW LEVEL SHEAR FOR AN
   ATTENDANT TORNADO THREAT IN THE VICINITY OF THE WARM FRONT.
   
   ..PETERS.. 03/28/2009
   
   
   ATTN...WFO...JAX...FFC...TAE...BMX...HUN...MOB...JAN...LIX...
   
   LAT...LON   29818846 29718939 30379010 32938846 33868821 33928538
               32238489 31728392 31768305 30778300 29458301 29468431
               29378606 29818846