The Colorado Department of Transportation says the snowstorm that buffeted the Rocky Mountains with up to 5 feet of snow over the holiday weekend was comparable to the worst storm cycle in 100 years.

Light glaze ice, snow, rain and high wind to cause difficult travel early this week in the U.P. -- winter warm-up to follow.

RICHLAND, Wash. -- Soot from pollution causes winter snowpacks to warm, shrink and warm some more. This continuous cycle sends snowmelt streaming down mountains as much as a month early, a new study ...