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Mountain Snowstorms

The Droughtbusting Blizzard of 2003 - In Mid-March of 2003, the snowpack in the Colorado Mountains was well below normal and communities along the Front Range of Colorado were facing an extreme drought with dim prospects for summer water supplies. The period from 17 to 19 March 2003 changed the landscape. A large cyclone formed over the Colorado Rockies, with a deep cutoff low pressure center over the Four Corners region of the southwest. Over the next two days, this cutoff low progressed very slowly eastward, keeping eastern Colorado under the influence of deep upslope flow for two straight days. During this time, wave after wave of clouds and precipitation moved into eastern Colorado. The net effect: a huge snowfall.

Department of Atmospheric Sciences Severe and Hazardous Weather at Department of Atmospheric Sciences University of Illinois