A winter storm bearing down on the Upper Midwest is expected to dump up to a foot of snow across the region later Thursday and through the day on Friday.
Both Chicago and Detroit are in the cross hairs of the storm, and widespread flight delays and cancellations are likely at both cities’ airports.
Airlines were already canceling flights for Friday. Nationwide, more than 450 flights have been scrubbed.
Ripple-effect flight delays, changes and cancellations may occur across the nation as crew and aircraft are displaced because of the effect on the major airports at Chicago and Detroit, AccuWeather warned.
Winter storm watches and warnings are in effect Thursday all the way from Montana to Michigan.
The heavy rate of snow will also clog streets and highways in the Interstate 80, 90 and 94 corridors in the Midwest, AccuWeather said.
In the Chicago area, snow will start during the Thursday-evening commute, but the most significant impacts are expected for the Friday-morning rush. Snowfall should taper off by Friday evening.
The National Weather Service said “travel will be difficult to impossible at times.”
The heaviest snow will be in a relatively narrow band across mainly northern Illinois and southern Michigan. About 50 miles could be the difference between a foot of snow and very little to nothing, the weather service said.
Snow will also fall later Friday in northern Ohio, western Pennsylvania and western New York.
The Weather Channel has named the storm Winter Storm Mateo.