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.
By Wednesday night, snow had blanketed parts of Iowa and Nebraska as the storm moved out of eastern Colorado and across parts of Kansas. Several states were reporting numerous traffic accidents, including one fatality in Nebraska.
"There are a few truckers stranded here. And we have some semis that have rolled over and we have some that have jackknifed," said Ashley Brozek, a clerk at the Eagle Travel Center in the western Kansas town of Tribune. "We also have a UPS driver that is stranded and a local family has let him in for the night."