Large scale lift from an upper level low combined with a deep easterly upslope flow behind a cold front to produce heavy snow in and near the Front Range Foothills and Palmer Divide.  Storm totals ranged from 1.5 to 3 feet in the Front Range Foothills, with 1 to 1.5 feet along the Urban Corridor.
In the Front Range Foothills and Palmer Divide, storm totals included:  36.5 inches, 7 miles southwest of Boulder; 32 inches, 12 miles northwest of Golden; 28 inches at Genesee; 24.5 inches, 3 miles west of Jamestown; 23 inches at Bergen Park; 21  inches at Evergreen and Gross Reservoir; 19 inches near Eldorado Springs and 3 miles west-southwest of Conifer;  17 inches, 4 miles south-southwest of Tiny Town; 13.5 inches, 15 miles north of Elizabeth; 12.5 inches, 2 miles east of Antero Junction; with 12 inches at Rough and Tumble.
Along the Urban Corridor, storm totals included:  18 inches in Golden; 14.5 inches in Boulder, 13 inches at the National Weather Service in Boulder; 12.5 inches, 5 miles south-southwest of Arapahoe Park; 12 inches at Lone Tree; 11.5 inches in Broomfield; 11 inches in Arvada, 4 miles northwest of Elbert, Niwot and Wheatridge; 10 inches in northwest Denver; 9 inches, 2 miles southwest of Loveland; with 7.3 inches at Denver International Airport.

Winter Weather in C & SE PARK COUNTY, COLORADO
From 21-DEC-11 17:00:00 to 22-DEC-11 11:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Storm in BOULDER & JEFFERSON COUNTIES BELOW 6000 FEET / W BROOMFIELD COUNTY, COLORADO
From 21-DEC-11 17:00:00 to 22-DEC-11 11:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
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 21-DEC-11 17:00:00 to 22-DEC-11 11:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Storm in BOULDER & JEFFERSON COUNTIES BELOW 6000 FEET / W BROOMFIELD COUNTY, COLORADO
From 21-DEC-11 17:00:00 to 22-DEC-11 11:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Storm in N DOUGLAS COUNTY BELOW 6000 FEET / DENVER / W ADAMS & ARAPAHOE COUNTIES / E BROOMFIELD COUNTY, COLORADO
From 21-DEC-11 17:00:00 to 22-DEC-11 11:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Storm in ELBERT / C & E DOUGLAS COUNTIES ABOVE 6000 FEET, COLORADO
From 21-DEC-11 17:00:00 to 22-DEC-11 11:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Weather in LARIMER COUNTY BELOW 6000 FEET / NW WELD COUNTY, COLORADO
From 21-DEC-11 17:00:00 to 22-DEC-11 11:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Weather in C & S WELD COUNTY, COLORADO
From 21-DEC-11 17:00:00 to 22-DEC-11 11:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Weather in C & E ADAMS & ARAPAHOE COUNTIES, COLORADO
From 21-DEC-11 17:00:00 to 22-DEC-11 11:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Weather in S & SE GRAND / W CENTRAL & SW BOULDER / GILPIN / CLEAR CREEK / SUMMIT / N & W PARK COUNTIES ABOVE 9000 FEET, COLORADO
From 21-DEC-11 17:00:00 to 22-DEC-11 11:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter