MESOSCALE DISCUSSION 0379
   NWS STORM PREDICTION CENTER NORMAN OK
   0915 PM CDT THU APR 02 2009
   
   AREAS AFFECTED...NORTHERN/CENTRAL AL AND MIDDLE/EASTERN TN INTO
   NORTHWEST GA
   
   CONCERNING...TORNADO WATCH 112...
   
   VALID 030215Z - 030345Z
   
   THE SEVERE WEATHER THREAT FOR TORNADO WATCH 112 CONTINUES.
   
   TORNADO WATCH 112 CONTINUES UNTIL 07Z ACROSS PORTIONS OF
   NORTHERN/CENTRAL AL AND MIDDLE/EASTERN TN INTO NORTHWEST GA.
   
   BROKEN/WAVY CONVECTIVE LINE WILL CONTINUE TO QUICKLY PROGRESS ACROSS
   FAR NORTHEAST AL AND MIDDLE/EASTERN TN TOWARD THE CHATTANOOGA
   VICINITY. FARTHER WEST CLOSER TO THE BRUNT OF THE UPPER FLOW/MID
   LEVEL SPEED MAX PER WATER VAPOR IMAGERY...A FAST MOVING LOW TOPPED
   CONVECTIVE LINE WILL CONTINUE TO RACE EASTWARD ACROSS THE NORTHERN
   HALF OF AL OVER THE NEXT FEW HOURS. EVEN WITH MODEST
   INSTABILITY...THE PRIMARY TORNADO THREAT WOULD SEEMINGLY REMAIN
   ACROSS PORTION OF MIDDLE/EASTERN TN IN CLOSER PROXIMITY TO AN
   ADVANCING SURFACE LOW AND BACKED LOW LEVEL SOUTHEASTERLY FLOW.
   OTHERWISE...EVEN WITH AN ABSENCE OF CLOUD-GROUND LIGHTNING ACROSS
   AL...THE PRIMARY SEVERE THREAT SHOULD BE DAMAGING WINDS AS THE NEAR
   SURFACE LAYER CONTINUES TO STABILIZE WITH INCREASING SBCINH. AN
   ADDITIONAL WATCH IS NOT CURRENTLY PLANNED DOWNSTREAM /EAST/ OF WW
   112.
   
   ..GUYER.. 04/03/2009
   
   
   ATTN...WFO...MRX...FFC...OHX...BMX...HUN...
   
   LAT...LON   36358629 36518523 35978438 32598591 32978802 35638717
               36358629