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Winter Storm — Grand & Summit Counties Below 9000 Feet, Colorado

2017-01-03 to 2017-01-05 · Grand & Summit Counties Below 9000 Feet, Colorado

Event narrative

Storm totals included 12 inches near Stillwater Creek and 11 inches near Grand Lake.

Wider weather episode

The first in a series of powerful winter storms brought a period of heavy snow to the north central mountains, Front Range Foothills and Urban Corridor. In the mountains and foothills, the heaviest snowfall occurred along and north of the Interstate 70 corridor. Storm totals ranged from one to around three feet. Eastbound I-70 was closed at Vail and Silverthorne because of poor conditions and several spun-out vehicles. Across the Interstate 25 corridor, heavy snowfall fell over northern parts of metro Denver north to around Fort Collins. At Denver International Airport, 145 flights were canceled.

Some of the storm totals in the mountains and foothills included: 38.5 inches at Mt. Zirkel, 23 inches just northeast of Rabbit Ears Pass, 21.8 inches, 9 miles south-southeast of Spicer; 19.7 inches 5 miles northeast of Ward, 18 inches, 9 miles east of Glendive and 16 miles west-southwest of Walden; 17 inches, 3 miles south of Brainard Lake and Copeland Lake; 16 inches at Arapaho Basin and 5 miles east-northeast of Nederland and Niwot Ridge SNOTEL; 15.7 inches at Eldora, 15 inches at Estes Park, 14.5 inches at Berthoud Pass; 14 inches at Allenspark, 12.9 inches, 7 miles east-northeast of Virginia Dale, 12.7 inches in Breckenridge and 12 inches at Gross Reservoir.

Along the I-25 corridor, some of the storm totals included: 13.8 inches in Boulder, 12 inches at Marston Reservoir, 9.5 inches in Niwot, 9 inches at Flatiron Reservoir, 8.3 inches in Northglenn; 8 inches at Hygiene, 7 inches in Arvada, 5 miles west-northwest of Brighton, Frederick, Lafayette, Loveland and 5 miles northeast of Westminster; with 6.5 inches at Ralston Reservoir and Wheat Ridge.

Source: NOAA Storm Events Database, event_id 670139. Narrative written by the NWS forecast office that issued the report.