MESOSCALE DISCUSSION 0462
   NWS STORM PREDICTION CENTER NORMAN OK
   0157 AM CDT MON APR 13 2009
   
   AREAS AFFECTED...FAR SOUTHEAST MS/SOUTHERN AL INTO FL
   PANHANDLE/WESTERN GA
   
   CONCERNING...TORNADO WATCH 146...147...
   
   VALID 130657Z - 130800Z
   
   THE SEVERE WEATHER THREAT FOR TORNADO WATCH 146...147...CONTINUES.
   
   A TORNADO WATCH REPLACEMENT IS ANTICIPATED FOR THE REMAINING
   PORTIONS OF TORNADO WATCHES 146/147...WITH A SEVERE THREAT EXPECTED
   TO GRADUALLY DEVELOP EASTWARD ACROSS THE REMAINDER OF SOUTHERN AL
   INTO SOUTHWEST GA/FL PANHANDLE. A WATCH WILL LIKELY BE COORDINATED
   WITHIN THE HOUR.
   
   WELL-ORGANIZED WAVY SQUALL LINE WITH EMBEDDED SMALL SCALE BOWS WILL
   CONTINUE TO STEADILY PROGRESS EASTWARD OVERNIGHT...WITH THE LEAD
   BRUNT OF THIS STRONG/SEVERE CONVECTIVE LINE APPROACHING I-65 IN
   SOUTH CENTRAL AL AS OF 0645Z...WITH THE TRAILING/SOUTHERN PORTION OF
   THE LINE ACROSS FAR SOUTHEAST MS WEST OF MOBILE AL. ALTHOUGH THERE
   MAY BE A TENDENCY FOR STORMS TO BE ROOTED ATOP A SHALLOW STABLE
   LAYER WITH NORTHEASTWARD EXTENT INTO SOUTH CENTRAL AL/SOUTHWEST
   GA...ORGANIZED NATURE OF THE SQUALL LINE AND HIGHLY FAVORABLE WIND
   PROFILES PER REGIONAL WSR-88D VWPS WILL CONTINUE TO FAVOR EMBEDDED
   BOWING STRUCTURES CAPABLE OF DAMAGING WINDS/ISOLATED TORNADOES. IN
   ADDITION...VERY HEAVY RAINFALL WILL REMAIN A DISTINCT THREAT
   OVERNIGHT.
   
   ..GUYER.. 04/13/2009
   
   
   ATTN...WFO...FFC...TAE...BMX...MOB...LIX...
   
   LAT...LON   32318647 32588521 31708407 30588432 29848527 30178776
               30318917 31288831 31798693 32318647