MESOSCALE DISCUSSION 0809
   NWS STORM PREDICTION CENTER NORMAN OK
   1108 PM CDT TUE MAY 06 2003
   
   AREAS AFFECTED...NE TX...SW/CNTRL AR...NW LA
   
   CONCERNING...TORNADO WATCH 277...
   
   VALID 070408Z - 070545Z
   
   THREAT FOR LARGE HAIL/DAMAGING WINDS APPEARS TO BE INCREASING AGAIN
   ACROSS ARKANSAS...NEW WW WILL BE ISSUED SHORTLY.
   
   NEW CONVECTIVE DEVELOPMENT EAST OF THE DALLAS/FORT WORTH AREA AND
   REINTENSIFICATION OF THUNDERSTORM ACTIVITY AHEAD OF WEAK SURFACE
   COLD FRONT ACROSS EASTERN OKLAHOMA APPEARS TO BE IN RESPONSE TO
   APPROACH OF ANOTHER JET STREAK EMBEDDED WITHIN STRONG CYCLONIC UPPER
   FLOW REGIME.  SPEED MAXIMUM NOW MIGRATING ACROSS NORTHWEST TEXAS
   WILL CONTINUE ACROSS THE ARKLATEX OVERNIGHT...WHERE LOW-LEVEL WARM
   ADVECTION WILL CONTINUE TO STRENGTHEN NEXT FEW HOURS ALONG SOUTH
   SOUTHWESTERLY LOW-LEVEL JET AXIS.  A LARGER CONVECTIVE CLUSTER MAY
   GRADUALLY DEVELOP VICINITY OF OLD OUTFLOW BOUNDARY ACROSS SOUTHWEST
   ARKANSAS...GRADUALLY DEVELOPING NORTHEASTWARD TOWARD THE MEMPHIS
   AREA OVERNIGHT.
   
   ..KERR.. 05/07/2003
   
   
   ATTN...WFO...MEG...JAN...LZK...SHV...
   
   33959483 34579407 35159278 35659168 35749097 34809036
   33259156 32939439