MESOSCALE DISCUSSION 1847
   NWS STORM PREDICTION CENTER NORMAN OK
   0202 AM CDT TUE AUG 03 2004
   
   AREAS AFFECTED...PORTIONS SERN SD...SWRN MN...NWRN THROUGH E-CENTRAL
   IA
   
   CONCERNING...SEVERE THUNDERSTORM POTENTIAL 
   
   VALID 030702Z - 030900Z
   
   TSTM COVERAGE MAY INCREASE THROUGH AT LEAST 9Z...ESPECIALLY OVER
   EXTREME SERN SD/SWRN MN/WRN IA PORTION OF DISCUSSION AREA...WITH
   POTENTIAL FOR OCCASIONAL LARGE HAIL.
   
   SFC MESOANALYSIS SHOWS WAVY...WNW-ESE ORIENTED QUASISTATIONARY FRONT
    FROM NWRN SD SEWD TO BETWEEN PHP-PIR...THEN ESEWD TO VICINITY FSD
   AND DSM.  MOST ACTIVITY SHOULD REMAIN NEAR THIS FRONT. VWP/PROFILER
   DATA INDICATES STRONGEST STORM-RELATIVE INFLOW WILL BE OVER
   SERN-MOST SD AND NWRN IA...INVOF NOSE OF 30-35 KT LLJ...AND WHERE
   850 MB FLOW TURNS SHARPLY FROM SWWD TO SEWD AS IN FSD VWP.  LOW
   LEVEL FLOW WEAKENS WITH WWD EXTENT AND BECOMES DIFLUENT ACROSS MUCH
   OF NEB/SD BORDER REGION...BASED ON 850 MB STREAMLINES FROM
   VWP/PROFILER PLOTS.  AIR MASS ACROSS THIS REGION WILL REMAIN QUITE
   BUOYANT...WITH ELEVATED MUCAPES PEAKING AROUND 4000 J/KG NEAR IA/SD
   BORDER AND DIMINISHING TO AROUND 2500 J/KG OVER CENTRAL SD AND
   E-CENTRAL IA.
   
   ..EDWARDS.. 08/03/2004
   
   
   ATTN...WFO...DVN...ARX...MPX...DMX...FSD...OAX...ABR...
   
   41519267 42189534 42959828 43459892 43859936 44209947
   44479909 44599852 44599820 44559774 44459719 44269635
   43769468 43069331 42429211 41769174 41539213