Severe thunderstorms moved through parts of northern Illinois Monday night producing wind damage and hail stones up to the size of baseballs near the suburbs! There was a very strong low level jet that the storms formed along, ahead of the warm front, with a few of the storms becoming supercells. The first round of severe weather moved into western Ogle County a little before 9pm. Wind damage was reported near Polo and Oregon, along with one inch hail. The storm then quickly tracked to the east producing wind damage in the Rochelle and DeKalb areas. Storms continued to develop to the west thanks to the low level jet, but also very strong winds aloft! The DeKalb storm continued to intensify as it moved across O'hare International Airport around 10:45am. At that time tennis to baseball sized hail was reported north of the airport in Des Plaines!! Later in the evening, another round of thunderstorms began to form in northwest Illinois and moved through the early morning hours bringing mainly a damaging wind threat across Freeport, Rockford, Marengo and Huntley before weakening north of Chicago.
Thanks to the National Weather Service in Romeoville for putting together the storm recap!
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