MESOSCALE DISCUSSION 2073
   NWS STORM PREDICTION CENTER NORMAN OK
   0538 PM CDT SUN AUG 03 2003
   
   AREAS AFFECTED...SE KS AND EXTREME SRN MO/NRN AR
   
   CONCERNING...SEVERE THUNDERSTORM POTENTIAL 
   
   VALID 032238Z - 040045Z
   
   THREAT FOR ISOLATED LARGE HAIL/DAMAGING WINDS WILL INCREASE ACROSS
   EXTREME SRN MO/NRN AR INTO SE KS THE NEXT 2-3 HOURS...BUT
   SHORT-LIVED NATURE OF THE THREAT SUGGESTS THAT A WW MAY NOT BE
   NECESSARY.
   
   AN OUTFLOW BOUNDARY IS DRIFTING NWD FROM N/NE AR INTO EXTREME S
   CENTRAL AND SE MO.  THIS BOUNDARY WILL LIKELY MERGE WITH A WEAK
   QUASI-STATIONARY FRONT ACROSS SRN MO AND RESULT IN ADDITIONAL
   THUNDERSTORM DEVELOPMENT WWD ACROSS EXTREME SRN MO.  A NARROW SWATH
   OF MLCAPE VALUES EXISTS S OF THE FRONT IN MO AND N OF THE COLD POOLS
   ACROSS NE AR AND ERN OK...WHILE DEEP LAYER VERTICAL SHEAR IS
   MARGINALLY FAVORABLE FOR ORGANIZED/SUPERCELL TYPE STORMS OVER THIS
   AREA.  IT APPEARS THAT THE SEVERE THREAT MAY BE RELATIVELY
   SHORT-LIVED GIVEN THE NARROW AREA OF INSTABILITY DUE TO THE
   CONVECTIVE OVERTURNING THAT OCCURRED EARLIER IN THE DAY ACROSS MUCH
   OF AR/ERN OK.  STILL...LARGE HAIL AND DAMAGING WINDS MAY ACCOMPANY A
   FEW STORMS ALONG THE SURFACE BOUNDARIES WHERE LOW-LEVEL
   ASCENT/MOISTURE WILL BE MAXIMIZED FOR THE NEXT COUPLE OF HOURS.
   
   ..THOMPSON.. 08/03/2003
   
   
   ATTN...WFO...PAH...MEG...LZK...SGF...TSA...ICT...
   
   36539076 36219185 36069234 36279356 36369394 36819482
   37479608 37999599 36999345 36939214 37009097