Ice forms along the shore of Lake Michigan before sunrise, Wednesday, Jan. 30, 2019, in Chicago. (Photo: AP)

A person walks along the lakeshore, Wednesday, Jan. 30, 2019, in Chicago. (Photo: AP)

Geese huddle in the water as the sun rises at the harbor in Port Washington, Wis., on Wednesday, Jan. 30, 2019. (Photo: AP)

Icicles form on a railing as the sun rises in the harbor in Port Washington, Wis., on Wednesday, Jan. 30, 2019 as temperatures were -22 degrees with -50 degree wind chills. (Photo: AP)

Ice covers the Chicago River Wednesday, Jan. 30, 2019, in Chicago. (Photo: AP)

Lisa Laws is bundled up as she has a CTA bus to herself early Wednesday, Jan. 30, 2019. (Photo: AP)

Ice floats on Lake Michigan at dawn in Chicago, Illinois, on Wednesday, Jan. 30, 2019. (Photo: VCG)