DENVER — A storm that has dumped more than a foot of snow in the Rocky Mountains was causing problems for travelers as it spread across the Plains on Wednesday.
The main east-west route across Colorado, Interstate 70, was closed from east of Denver to the Kansas line because of poor visibility due to blowing snow. Smaller highways were also closed in eastern Colorado.
Drivers in Iowa and Nebraska are being warned to be careful or stop driving altogether starting Wednesday evening as the Plains gets its first major winter storm of the season.
Light snow is also expected at Chicago's O'Hare International Airport on Thursday and strong winds could make visibility poor. That, combined with low clouds, could cause delays at the nation's second-busiest airport. National Weather Service forecaster Jamie Enderlen said.
Iowa officials advised drivers to avoid most roads from Wednesday night through noon Thursday, but native Laurie Harry, a manager at a Casey's General Store, expects to drive to work Thursday morning.
"If I need to get into work, I'll be here," she said. "We've had snow before. Iowans know what to expect. We're used to it."
The snow moved out of Denver by midday Wednesday. At the height of the storm, Denver's airport, the nation's fifth-busiest, reported delays averaging 30 minutes because of snow and ice, but operations have since returned to normal.
The snow is a gift for ski resorts in Colorado, Utah and Arizona right before the busy holiday week. The snow might also tempt backcountry skiers, but it prompted some avalanche warnings in Colorado and Utah.
The moisture is also a relief after an extended wildfire season in Colorado. Drought conditions persist especially in the mainly agricultural eastern half of the state.
Farmer Fred Midcap welcomed the snow even though 25 mph winds were blowing some of it away from his land near Hudson in northeastern Colorado.
"The snowflakes are mostly going sideways," he said.
Midcap doesn't plow his land, a move intended to help improve the soil, and said the stubble leftover from this year's weak millet crop will help hold some of the snow in place, hopefully setting up for a better growing season next year. If the snow keeps coming, it will also provide some welcome insulation to his winter wheat crop before the coldest weather of the season.
In Arizona, two recent storms had combined to blanket the mountains north of Flagstaff with 2 feet of snow, and about 20 inches in Flagstaff and along the Mogollon Rim.
The storm is also expected to hit Wisconsin and Michigan, where up to a foot of snow was forecast in the north by Friday.
Associated Press writers Felicia Fonseca, in Flagstaff, Ariz., Brady McCombs, in Salt Lake City, David Runk, in Detroit, Bob Christie, in Phoenix, and Barbara Rodriguez in Des Moines, Iowa, also contributed to this report.
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