Take a look at these pictures out of Rocky River and Milan, Ohio.

Ice jamming on the Rocky River in Rocky River, OH via the National Weather Service, Cleveland office (@NWSCLE on twitter).

Ice jamming on the Huron River in Franklin Flats in Milan via the National Weather Service, Cleveland office (@NWSCLE on twitter).
Due to recent warmth, large chunks of ice have begun to break up and flow down rivers and streams in these areas. As these large groups of broken ice form and move, they can lead to ice jam, where the ice blocks the flow of water and leads to flooding. This can especially occur in areas were the water flow narrows, curves or interacts with large structures, such as bridges.
Several flooding alerts for this very threat are in effect across parts of the Great Lakes region, including Ohio, but into the Northeast as well.
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Meteorologist Marcus Walter.