Heaviest showers isolated t-storms continue developing well inland; tallest tops: 43,000 ft.

Several clusters of downpour-generating showers and few isolated thunderstorms are being tracked as we post this at 3:50pm Wednesday--one on the Kane/DuPage County line and still another producing lightning north of McHenry over Wisconsin's Walworth County. The most extensive collection of cells runs from southern Boone into DeKalb and LaSalle Counties.  All of these showers and thunderstorms been developing farther inland with time.  It's a trend being promoted by westward moving cool air off Lake Michigan which has tended to stabilize the air and limit rainfall in lakeside counties. As of this posting, the tallest and most prolific rain-generating cells are located about 75 miles west of Chicago from near Rochelle to near Compton in Ogle and Lee Counties. Lightning has really been quite limited and had been associated almost exclusively with the Walworth County storm until a series of cloud to ground strokes began in the Ogle/Lee county thunderstorms. Cooling temperatures as we approach and pass sunset will lead to a rapid demise of these cells--with the likelihood scattered thunderstorms will flare  again over sections of the Chicago metro area Thursday afternoon with daytime heating.
  
Track these storms here through this University of Wisconsin-Madison satellite imagery:

http://www.ssec.wisc.edu/~tomw/wisgifloop.html