MESOSCALE DISCUSSION 1563
   NWS STORM PREDICTION CENTER NORMAN OK
   1019 PM CDT TUE JUL 14 2009
   
   AREAS AFFECTED...IA...SERN MN
   
   CONCERNING...SEVERE THUNDERSTORM WATCH 584...
   
   VALID 150319Z - 150415Z
   
   THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 584
   CONTINUES.
   
   SEVERE THUNDERSTORM WATCH CONTINUES ACROSS A GOOD PORTION OF IA AND
   A SMALL PART OF SERN MN.
   
   A SUBSTANTIAL AMOUNT OF INSTABILITY HAS YET TO BE OVERTURNED ACROSS
   IA WHERE MLCAPE VALUES CURRENTLY RANGE FROM 2000-4000 J/KG.  ONGOING
   CONVECTION SHOULD CONTINUE ESEWD ALONG/AHEAD OF ADVANCING COLD
   FRONT...WITH SWD DEVELOPMENT LIKELY INTO THE STRONGER INSTABILITY AS
   LLJ INCREASES ACROSS THE MID MS VALLEY REGION.  AT THIS TIME IT
   APPEARS LARGE HAIL IS THE GREATEST SEVERE RISK.
   
   ..DARROW.. 07/15/2009
   
   
   ATTN...WFO...DVN...ARX...MPX...DMX...FSD...OAX...
   
   LAT...LON   43509489 43509307 43849304 43849172 43519171 43509162
               42669159 42649208 42299206 42289230 41519230 41509505
               41859510 41869567 42209568 42199532 42559533 42559492
               43509489