DENVER (AP) -- Forecasters are predicting snowfall of "epic proportions" in parts of western Colorado.

The National Weather Service says the top of the Grand Mesa and areas around Crested Butte above 9,000 feet could have 6 to 8 feet of snow by Thursday afternoon. A winter storm warning covering Vail, Aspen, Telluride and Crested Butte lasts through Tuesday night, with wind and heavy snow making it difficult to travel.

On Sunday, Silverton Mountain reported 18 inches of new snow in the last 24 hours at the ski area, while the Crested Butte ski area reported 15 new inches.

While northern Colorado has been getting a lot of moisture this fall, snowpack totals have been lagging in southern Colorado.

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