MESOSCALE DISCUSSION 0372
   NWS STORM PREDICTION CENTER NORMAN OK
   0336 PM CDT THU APR 02 2009
   
   AREAS AFFECTED...PARTS OF SE AR...CNTRL AND NRN MS
   
   CONCERNING...TORNADO WATCH 105...
   
   VALID 022036Z - 022130Z
   
   THE SEVERE WEATHER THREAT FOR TORNADO WATCH 105 CONTINUES.
   
   THE POSSIBILITY OF A NEW WW WILL BE DISCUSSED WITH AFFECTED WFOS
   PRIOR TO 21Z.
   
   IN THE WAKE OF THE INITIAL BAND OF CONVECTION NOW SHIFTING AWAY FROM
   THE MISSISSIPPI VALLEY...RAPID SURFACE PRESSURE FALLS ARE NOW
   ONGOING NEAR THE MISSISSIPPI RIVER BETWEEN NATCHEZ AND MEMPHIS. 
   THIS IS OCCURRING IN THE WARM SECTOR OF A DEEPENING CYCLONE
   CURRENTLY MIGRATING ACROSS CENTRAL ARKANSAS.  ALTHOUGH RATHER
   DIFFUSE...A DRY LINE TYPE STRUCTURE APPEARS TO EVOLVING ACROSS THE
   LOWER MISSISSIPPI VALLEY.  AND...THERE STILL APPEARS A WINDOW OF
   OPPORTUNITY FOR FURTHER SHARPENING PRIOR TO COLD FRONTAL PASSAGE
   EARLY THIS EVENING.  AIDED BY FORCING AHEAD OF THE VIGOROUS
   MID-LEVEL IMPULSE TURNING EASTWARD INTO THE LOWER MISSISSIPPI
   VALLEY...THIS BOUNDARY MAY STILL PROMOTE VIGOROUS DISCRETE STORM
   DEVELOPMENT LATE THIS AFTERNOON.  IN THE PRESENCE OF STRONG DEEP
   LAYER SHEAR AND SIZABLE CLOCKWISE CURVED LOW-LEVEL HODOGRAPHS...
   SUPERCELLS WITH THE RISK FOR LARGE HAIL AND ISOLATED TORNADOES ARE
   POSSIBLE.
   
   ..KERR.. 04/02/2009
   
   
   ATTN...WFO...MEG...JAN...LZK...
   
   LAT...LON   33749144 34769137 34889042 33748934 33118922 32178972
               31869005 31709087 31959120 32759119 33749144