A woman braces against the cold and blowing snow on Denver's 16th Street Mall, Dec. 4, 2013.
A wintry storm pushing through the Rockies and Midwest is bringing bitterly cold temperatures and treacherous driving conditions.
Alton Zenker gathers netting from round bales while feeding cows on his ranch, north of Carson, N.D., Dec. 4, 2013, as an arctic blast swept across the Northern Plains.
Thursday's projected high is minus-6, falling to minus-10 by Saturday, with overnight lows to 24 below as a major winter storm bulldozed from the Rockies eastward.
The National Weather Service forecast a foot or more of snow in some areas of the Upper Midwest, with freezing rain possible for parts of the Great Lakes.