The heaviest snow is expected across a swath extending from northwest Missouri into Milwaukee, Chicago and Michigan, with predictions of as much as a foot of snow in some areas, according to the National Weather Service. Before the storm, several cities in the Midwest had broken records for the number of consecutive days without measurable snow.
In Iowa, more than 30,000 people were without electricity due to the storm, reports CNN.
Light snow, strong winds and low clouds could make visibility poor and cause delays at Chicago's O'Hare International Airport, the nation's second-busiest airport, according to the National Weather Service. The weather has already prompted Delta and United Airlines to allow many affected travelers to change schedules without incurring fees.