MESOSCALE DISCUSSION 1907
   NWS STORM PREDICTION CENTER NORMAN OK
   1132 PM CDT THU JUL 24 2008
   
   AREAS AFFECTED...PARTS OF S CENTRAL IA/ERN MO/FAR W CENTRAL IL
   
   CONCERNING...SEVERE POTENTIAL...WATCH POSSIBLE 
   
   VALID 250432Z - 250600Z
   
   HEAVY RAINFALL POTENTIAL AND ISOLATED/MARGINAL SEVERE THREAT
   EXPECTED TO CONTINUE FOR SEVERAL HOURS.  WW MAY BECOME NECESSARY.
   
   THUNDERSTORMS CONTINUE TO INCREASE IN COVERAGE AND INTENSITY ACROSS
   NERN MO AND VICINITY...ALONG THE SURFACE-BASED INSTABILITY GRADIENT
   LYING NW-SE ACROSS THIS AREA.  STORMS HAVE REMAINED GENERALLY
   ELEVATED...BUT RECENT TRENDS INDICATE SOME SWWD BACKBUILDING TOWARD
   CENTRAL MO WHERE A 30 KT SWLY LOW-LEVEL JET EXISTS.  THUS -- THE
   POTENTIAL FOR STORMS TO BECOME MORE NEARLY SURFACE-BASED SEEMS TO
   EXIST INTO CENTRAL MO -- WHICH WOULD ENHANCE THE POTENTIAL FOR
   SEVERE WEATHER.
   
   OTHERWISE...MAIN THREAT -- ALONG WITH MARGINAL HAIL -- APPEARS TO BE
   HEAVY RAINFALL.  GIVEN POTENTIAL FOR STORMS TO PERSIST AND THE
   ORIENTATION OF THE CONVECTIVE BAND ROUGHLY ALONG THE DIRECTION OF
   PRIMARY STORM MOTION...SEVERAL INCHES OF RAIN WILL BE POSSIBLE
   LOCALLY OVER THE NEXT FEW HOURS.
   
   ..GOSS.. 07/25/2008
   
   
   ATTN...WFO...LSX...DVN...SGF...DMX...EAX...
   
   40849237 39639072 38429016 37489054 37539157 38339290
   39649355 40929319