MESOSCALE DISCUSSION 1800
   NWS STORM PREDICTION CENTER NORMAN OK
   0612 AM CDT SUN AUG 19 2007
   
   AREAS AFFECTED...NERN IA/FAR SWRN WI/FAR NWRN IL
   
   CONCERNING...HEAVY RAINFALL 
   
   VALID 191112Z - 191245Z
   
   TRAINING TSTMS WITH LOCALLY HEAVY RAINFALL RATES OF 1-2 INCHES PER
   HOUR WILL CONTINUE TO DEVELOP ACROSS NERN IA/FAR SWRN WI AND INTO
   FAR NRN IL THROUGH THE EARLY MORNING.
   
   10Z SURFACE ANALYSIS SHOWED A WARM FRONT EXTENDING ESEWD FORM NWRN
   TO EAST CENTRAL IA...AND THEN THROUGH NRN IL TO CENTRAL IND.
   REGIONAL RADARS/SURFACE OBSERVATIONS INDICATED AN OUTFLOW
   BOUNDARY...ATTENDANT WITH EXTENSIVE TSTM COMPLEX FROM SRN MN TO SRN
   GREAT LAKES REGION...MOVING SWD INTO FAR NRN-NERN IA AND FAR SWRN
   WI.  30-35 KT SWLY LLJ WILL CONTINUE TO ADVECT MOISTURE...SOME FROM
   THE REMNANTS OF TC ERIN...ISENTROPICALLY ALONG AND N OF THESE
   BOUNDARIES AIDING IN ADDITIONAL TSTM DEVELOPMENT THIS MORNING ACROSS
   NRN IA TO NRN IL...WITH ACTIVITY TRAINING ESEWD.
   
   ..PETERS.. 08/19/2007
   
   
   ATTN...WFO...LOT...MKX...DVN...ARX...DMX...
   
   43459279 43269148 43079065 42879020 42528964 42258846
   41998816 41718834 41838978 42199112 42509269 42809331