A traveler treks into Denver International Airport during a snowstorm, Friday, Feb. 3, 2012, in Denver. A powerful winter storm swept across Colorado on Friday as it headed east, bringing blizzard warnings to eastern Colorado and winter storm warnings for southeast Wyoming, western Kansas and western Nebraska. The storm stretched as far south as New Mexico, where Department of Transportation reported difficult driving conditions on several state highways because of the winter weather, leaving highways snow packed and icy. (AP Photo/The Denver Post, Cyrus McCrimmon)

Photo by: Cyrus McCrimmon

A traveler treks into Denver International Airport during a snowstorm, Friday, Feb. 3, 2012, in Denver. A powerful winter storm swept across Colorado on Friday as it headed east, bringing blizzard warnings to eastern Colorado and winter storm warnings for southeast Wyoming, western Kansas and western Nebraska. The storm stretched as far south as New Mexico, where Department of Transportation reported difficult driving conditions on several state highways because of the winter weather, leaving highways snow packed and icy. (AP Photo/The Denver Post, Cyrus McCrimmon)