A winter storm warning remains in effect until Friday morning for portions of western and north-central Nebraska as a slow-moving storm continues cutting a path through the state.

The National Weather Service is calling for five to nine inches of snow overnight Thursday from Imperial in southwest Nebraska toward Valentine near the South Dakota border. Wind gusts of up to 35 mph could make for treacherous travel conditions.

Forecasters say the snow should taper off across Nebraska's Panhandle after midnight, but the gusts should continue.

National Weather Service observers reported 12 inches of snow in Rushville and 11 inches in nearby Clinton on Thursday morning. Interstate 80 remains closed west of Big Springs, Nebraska all the way to Laramie, Wyoming.

The storm dropped more than three feet of snow in areas of the foothills west of Denver and closed schools and businesses. Roads across the region remained snowpacked and icy.

At Denver International Airport, United Airlines canceled about half its flights to prevent delays and cancelations from spilling over into the next day. The National Weather Service said the area around the airport received between 11 and 16 inches of snow.

The Colorado Department of Transportation shut down Interstate 70 from near Denver to Burlington, which is about 15 miles from the Kansas border.

Other road closures included a 40-mile stretch of Interstate 80 from Cheyenne to Laramie and a 35-mile span of Interstate I-25 from Wellington to Cheyenne.