At least 14 people were injured during the storm, according to a news release from Saint Elizabeth Medical Center in Ottawa.
National Weather Service meteorologist Amy Seeley said she did not have a full count of how many tornadoes were reported because some sightings may have been the same system.
In LaSalle County, Illinois State police were in the area, helping Ottawa police.
Residents displaced by the storms were being advised to go Ottawa Township High School, 211 E.
The game was canceled, and families left after the first wave of storms were through.