More than 15,000 people were without power as severe storms and tornadoes plowed through northern Illinois Wednesday night leaving downed trees and power lines in their wake.
Video appears to show a tornado touching down in Mendota, Illinois.
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Navy Pier was closed Wednesday evening and the AON Summer Fireworks show canceled as guests were told to shelter in place due to severe weather in the Chicago area.
Fans were being asked to seek shelter at Soldier Field during the Copa America semifinal game Wednesday evening.
Both of Chicago's airports have canceled flights as powerful storms are anticipated to hit parts of the Midwest.
In case of downed power lines, ComEd is preparing for the severe weather Wednesday.
NBC 5's Pete Sack is tracking the threat of severe weather headed for the Chicago Wednesday.
As summer begins, the potential for severe storms and possible tornados becomes more common. The NWS provides 10 tips on how to stay safe during an issued tornado.
NBC 5's Andy Avalos is tracking a severe storm system that could bring damaging winds, large hail, heavy rain and frequent lightning to the Chicago area Wednesday.