CHICAGO — Storms that swept across northern Illinois spawned at least four tornadoes, severely damaged homes and forced first responders to pull survivors from basements, officials said Tuesday.

At least four tornadoes also hit parts of Michigan late Monday into early Tuesday, while possible tornadoes came through northern Indiana and Iowa. The storms knocked out power to thousands of people, but by Tuesday morning, the skies had cleared.

Particularly hard hit Monday night was a private camping resort in Sublette, Ill. Five people were hurt, and one was hospitalized.