A fast moving but potent Pacific storm system moved into southeast Colorado.  It then produced a deep upslope that brought heavy snow to the areas in and near the Front Range Foothills, Palmer Divide and northeast plains.  The combination of moderate to heavy snowfall and gusty winds caused roads to get snowpacked with drifts 1 1/2 to 4 ft deep in spots.   Storm totals generally ranged from 6 to 16 Denver International Airport has canceled about 500 flights and hundreds of other flights were delayed for an average of nearly four hours.  Heavy snow and gusty winds made for a long and slow commute to work, with many reports of accidents and school and government cancellations.  The official storm total at Denver International Airport was 7.7 inches; with 9.5 inches at the National Weather Service Office in Boulder.
In and near the Front Range Foothills and Palmer Divide, storm totals included:  17 inches, 6 miles northwest of Larkspur; 16 inches, 4 miles southwest of Eldorado Springs and 8 miles northeast of Four Corners; 15 inches, 12.5 miles northwest of Golden and 2 miles north of Roxborough Park; 14 inches at Genesee and near Ken Caryl; 12 inches near Berthoud; 11 inches near Arapahoe Park, 4 miles east of Boulder, Castle Rock, 3 miles southwest of Conifer, Lone Tree, Louisville and Parker; 10.5 inches, at Centennial and 8 miles southeast of Watkins; 10 inches in Broomfield and Strasburg; 9.5 inches at Ralston Reservoir; 9 inches, 4 miles south of Fort Collins and Loveland; 8.5 inches in Arvada; 7.5 inches at the CSU Campus in Fort Collins.
Elsewhere storm totals included:  11.5 inches in Sheridan; 11 inches in northwest Aurora, Federal Heights, Fredrick and Greeley; 10 inches just north of Lochbuie; 9.5 inches in north Longmont; 9 inches in Westminster, 8 inches in Iliff, 21 miles north of New Raymer, Northglenn and Mead; 6 inches in Crook, Holyoke, Julesburg and 5 miles south of Sedgwick.  In the mountains and high valleys, storm totals ranged from 4 to 9 inches.

Winter Storm in SEDGWICK COUNTY, COLORADO
From 15-DEC-15 05:00:00 to 15-DEC-15 17:00:00 (MST-7)
Reported by: Trained Spotter

Winter Storm in PHILLIPS COUNTY, COLORADO
From 15-DEC-15 05:00:00 to 15-DEC-15 17:00:00 (MST-7)
Reported by: Trained Spotter

Winter Storm in LARIMER & BOULDER COUNTIES BETWEEN 6000 & 9000 FEET, COLORADO
From 15-DEC-15 01:00:00 to 15-DEC-15 14:00:00 (MST-7)
Reported by: Trained Spotter

Winter Storm in JEFFERSON & W DOUGLAS COUNTIES ABOVE 6000 FEET / GILPIN / CLEAR CREEK / NE PARK COUNTIES BELOW 9000 FEET, COLORADO
From 15-DEC-15 01:00:00 to 15-DEC-15 14:00:00 (MST-7)
Reported by: Trained Spotter

Winter Weather in S & E JACKSON / LARIMER / N & NE GRAND / NW BOULDER COUNTIES ABOVE 9000 FEET, COLORADO
From 14-DEC-15 18:00:00 to 15-DEC-15 18:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: SNOTEL

Winter Weather in S & SE GRAND / W CENTRAL & SW BOULDER / GILPIN / CLEAR CREEK / SUMMIT / N & W PARK COUNTIES ABOVE 9000 FEET, COLORADO
From 14-DEC-15 18:00:00 to 15-DEC-15 18:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: SNOTEL

Winter Weather in GRAND & SUMMIT COUNTIES BELOW 9000 FEET, COLORADO
From 14-DEC-15 18:00:00 to 15-DEC-15 18:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: SNOTEL

Winter Weather in GRAND & SUMMIT COUNTIES BELOW 9000 FEET, COLORADO
From 14-DEC-15 18:00:00 to 15-DEC-15 18:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: SNOTEL

Winter Storm in LARIMER COUNTY BELOW 6000 FEET / NW WELD COUNTY, COLORADO
From 15-DEC-15 01:00:00 to 15-DEC-15 14:00:00 (MST-7)
Reported by: Trained Spotter

Winter Storm in BOULDER & JEFFERSON COUNTIES BELOW 6000 FEET / W BROOMFIELD COUNTY, COLORADO
From 15-DEC-15 01:00:00 to 15-DEC-15 14:00:00 (MST-7)
Reported by: Trained Spotter

Winter Storm in N DOUGLAS COUNTY BELOW 6000 FEET / DENVER / W ADAMS & ARAPAHOE COUNTIES / E BROOMFIELD COUNTY, COLORADO
From 15-DEC-15 01:00:00 to 15-DEC-15 14:00:00 (MST-7)
Reported by: Trained Spotter

Winter Storm in ELBERT / C & E DOUGLAS COUNTIES ABOVE 6000 FEET, COLORADO
From 15-DEC-15 01:00:00 to 15-DEC-15 14:00:00 (MST-7)
Reported by: Trained Spotter

Winter Storm in C & S WELD COUNTY, COLORADO
From 15-DEC-15 01:00:00 to 15-DEC-15 14:00:00 (MST-7)
Reported by: Trained Spotter

Winter Storm in C & E ADAMS & ARAPAHOE COUNTIES, COLORADO
From 15-DEC-15 01:00:00 to 15-DEC-15 14:00:00 (MST-7)
Reported by: Trained Spotter

Winter Storm in NE WELD COUNTY, COLORADO
From 15-DEC-15 05:00:00 to 15-DEC-15 17:00:00 (MST-7)
Reported by: Trained Spotter

Winter Storm in LOGAN COUNTY, COLORADO
From 15-DEC-15 05:00:00 to 15-DEC-15 17:00:00 (MST-7)
Reported by: Trained Spotter