Two storm systems, one moving to the south and east of the region, and the other brushing from the west, contributed to heavy snow along the Front Range Foothills, Urban Corridor and Northeast Plains.  The heaviest snow fell south and east of Denver where a blizzard developed during the late morning and early afternoon hours. In and near the Front Range Foothills and Palmer Divide, storm totals ranged from 6 to 15 inches.  Across the Northeast Plains, storm totals ranged from 2 to 11 inches.
Very strong winds, produced extensive blowing and drifting snow along the Interstate 70 corridor, from just east of Denver to near Limon. Sustained winds from 30 to 45 mph were measured near Cedar Point with peak gusts to 60 mph.  As a result, snow drifts 2 to 4 feet in depth made some roads impassable with whiteout conditions reported.  Interstate 70, from Airpark Road to Burlington, and State Highway 86, near Cedar Point, were closed due to very poor driving conditions.

Winter Storm in ELBERT / C & E DOUGLAS COUNTIES ABOVE 6000 FEET, COLORADO
From 21-JAN-07 06:00:00 to 21-JAN-07 18:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Northerly winds from 20 to 30 mph, strongest east of Interstate 25,  combined with heavy snow to produce near blizzard conditions along the Palmer Divide.  As a result, areas of blowing snow produced drifts up to 4 feet deep.  Storm totals included:  15 inches, 4 miles east of Parker, 13 inches, 5 miles south-southwest of Arapahoe Park, 12.5 inches, 4 miles south-southwest of Elizabeth, with 9 inches, around Castle Rock, Parker and Sedalia.

Blizzard in C & E ADAMS & ARAPAHOE COUNTIES, COLORADO
From 21-JAN-07 09:00:00 to 21-JAN-07 15:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Blizzard in N & NE ELBERT COUNTY BELOW 6000 FEET / N LINCOLN COUNTY, COLORADO
From 21-JAN-07 09:00:00 to 21-JAN-07 15:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Strong winds produced extensive blowing and drifting snow along the Interstate 70 corridor, from just east of Denver to near Limon.  Sustained winds from 30 to 45 mph were measured near Cedar Point with a peak wind gust from 50 to 60 mph.  As a result, snow drifts 2 to 4 feet in depth made some roads impassable with whiteout conditions reported.  Interstate 70, from Airpark Road to Burlington, and State Highway 86 near Cedar Point were closed due to very poor driving conditions.  Storm totals generally ranged from 2 to 7 inches over eastern portions of Adams, Arapahoe and Elbert Counties, as well as southeastern Washington and northwestern Lincoln Counties.

Heavy Snow in LARIMER & BOULDER COUNTIES BETWEEN 6000 & 9000 FEET, COLORADO
From 21-JAN-07 06:00:00 to 21-JAN-07 18:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Storm in MORGAN COUNTY, COLORADO
From 20-JAN-07 22:00:00 to 21-JAN-07 18:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy Snow in JEFFERSON & W DOUGLAS COUNTIES ABOVE 6000 FEET / GILPIN / CLEAR CREEK / NE PARK COUNTIES BELOW 9000 FEET, COLORADO
From 21-JAN-07 06:00:00 to 21-JAN-07 18:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Upslope conditions brought heavy snow the foothills of extreme southern Boulder and Jefferson Counties.  Storm totals included:  14 inches at Conifer, 13 inches, 12 miles southwest of Boulder, 12.5 inches, 4 miles south of Evergreen, 10 inches, 7 miles southwest of Boulder, Genesee and Roxborough State Park, and 8.5 inches, 3 miles west of Jamestown.  Across the rest of the Front Range Foothilla storm totals ranged from 3 to 8 inches.

Winter Storm in LOGAN COUNTY, COLORADO
From 20-JAN-07 22:00:00 to 21-JAN-07 15:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A band of heavy snow associated with a storm system exiting to the south and east of the area brought heavy snow to portions of Logan and Morgan Counties.  The heaviest band of snow stretched from around Merino to Fort Morgan.  Storm totals included:  11 inches, 7 miles west-northwest of Merino, 9.5 inches, 6 miles south of New Raymer, and 9 inches, 2 miles south of Fort Morgan.  Outside of this heavier band of snow, storm totals ranged from 1 to 4 inches.

Heavy Snow in BOULDER & JEFFERSON COUNTIES BELOW 6000 FEET / W BROOMFIELD COUNTY, COLORADO
From 21-JAN-07 06:00:00 to 21-JAN-07 18:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy Snow in N DOUGLAS COUNTY BELOW 6000 FEET / DENVER / W ADAMS & ARAPAHOE COUNTIES / E BROOMFIELD COUNTY, COLORADO
From 21-JAN-07 06:00:00 to 21-JAN-07 18:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy snow developed over western and southern sections of the Denver metropolitan area.  Storm totals included:  11 inches at Marston Reservoir, 8 inches at Aurora, 2 miles southeast of Highlands Ranch and Parker, 7.5 inches and Lone Tree, with 7 inches at Castle Rock. Snow amounts over the rest of the metropolitan area ranged from 3 to 6 inches.

Blizzard in WASHINGTON COUNTY, COLORADO
From 21-JAN-07 09:00:00 to 21-JAN-07 15:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter