It was another afternoon and evening of severe weather across Northern Illinois and into the Chicago area. According to the National Weather Service:

  • An isolated severe storm developed early in the afternoon near Kane County and moved east, producing numerous reports of hail greater than 1" in diameter. In addition this storm produced wind gusts in excess of 50 mph near O'Hare Airport, and continued to produce large hail across the Chicago Metro area.
  • Across Lake and McHenry counties in Illinois, the line of storms produced numerous reports of funnel clouds and reports of a waterspout Northeast of North Chicago over Lake Michigan.
  • Considerable damage from this line of storms was relayed near Grayslake and also Southwest of Gurnee Illinois.

The supercell storms produced quite the lightning show in addition to the high winds and heavy rain. Here's an example of what was seen:

Here is some preliminary information regarding the storms from yesterday afternoon and last night. This article will continue to be updated throughout the day as additional information, photos, are processed.

Posted by US National Weather Service Chicago Illinois on Monday, August 3, 2015

This video posted to YouTube by Melanie Koskamp shows the supercell thunderstorm approaching Chicago’s Montrose Beach Sunday afternoon:

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