Another slow moving storm system moved from the Desert Southwest and into the Texas Panhandle.  As it did, a deep easterly upslope flow occurred along the Front Range, with blizzard conditions developing over portions of the Northeast Plains of Colorado, mainly south of Interstate 76.
The heaviest snow fell along east facing slopes with storm totals up to 2 1/2 feet in the North Central Mountains and Front Range Foothills.  Across the Interstate 25 Corridor storm totals ranged from 6 to 18 inches, heaviest near the Front Range Foothills and Palmer Divide.  In the Northeast Plains, storm totals ranged from 3 to 6 inches.
Strong winds and snow brought blizzard conditions to plains of eastern Colorado, forcing the closure of Interstate 70 as well as several other roads and highways.  Greyhound Bus Company was forced to cancel all trips out of Denver.  Whiteout conditions were reported across eastern portions of Adams, Arapahoe and Elbert Counties, as well as Lincoln, Phillips and Washington Counties.  Northerly winds 20 to 30 mph were common with gusts to 40 mph. Snow drifts reportedly ranged from 4 to 14 feet in depth.  The heavy wet snow also caused a barn roof to collapse, at Shelton Dairy near La Salle.  The roof collapsed under the weight of an estimated 3 to 4 feet of snow, killing one cow.
The total cost in lost revenue and snow removal from both storms, at Denver International Airport alone, was estimated in the tens of millions of dollars.  The airport estimated up to $6.7 million in extra costs for contractors, overtime, equipment, deicing chemicals and other expenses.  The storms cost the airport $4.6 million in concession revenues.  United Airlines reported lost revenue of over $25 million while Frontier Airlines lost an estimated $12.1 million.

Blizzard in PHILLIPS COUNTY, COLORADO
From 29-DEC-06 06:00:00 to 30-DEC-06 04:30:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Snow amounts generally ranged from 3 to 6 inches, heaviest along the Palmer Divide.  North to northwest winds 20 to 30 mph were common with gusts to 40 mph.  Snow drifts reportedly ranged from 4 to 14 feet in depth.

Winter Storm in BOULDER & JEFFERSON COUNTIES BELOW 6000 FEET / W BROOMFIELD COUNTY, COLORADO
From 28-DEC-06 12:00:00 to 29-DEC-06 06:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Storm in S & SE GRAND / W CENTRAL & SW BOULDER / GILPIN / CLEAR CREEK / SUMMIT / N & W PARK COUNTIES ABOVE 9000 FEET, COLORADO
From 28-DEC-06 12:00:00 to 29-DEC-06 06:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Storm totals included:  24 inches at Cabin Creek, 18 inches at Wild Basin, 16 inches at Eldora and Rocky Mountain National Park; 15.5 inches at Echo Lake, with 14 inches at Bear Lake.

Winter Storm in ELBERT / C & E DOUGLAS COUNTIES ABOVE 6000 FEET, COLORADO
From 28-DEC-06 12:00:00 to 29-DEC-06 12:00:00 (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 28-DEC-06 12:00:00 to 29-DEC-06 06:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

In the Front Range Foothills, snow amounts ranged from 1 to 2 1/2 feet.  The snow fell at a rate of 3-4 inches per hour at times.  Storm totals included:  30 inches near Genesee, 29.5 inches, 12 miles northwest of Golden, 25 inches, 4 miles east of Bergen Park and Evergreen, 24 inches, 5 miles west-northwest of Conifer, 23.5 inches, 3 miles southwest of Golden and 6 miles south-southwest of Gold Hill, 23 inches, 3 miles west of Jamestown, 22.5 inches at Rollinsville, 19.5 inches at Aspen Springs and Estes Park, 19 inches, 3 miles north of Blackhawk, 18.5 inches at Nederland, 16 inches at Cheesman, Indian Hills, Intercanyon and Pine Junction.

Blizzard in C & E ADAMS & ARAPAHOE COUNTIES, COLORADO
From 29-DEC-06 06:00:00 to 30-DEC-06 04:30:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Blizzard in WASHINGTON COUNTY, COLORADO
From 29-DEC-06 06:00:00 to 30-DEC-06 04:30:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Storm in LARIMER COUNTY BELOW 6000 FEET / NW WELD COUNTY, COLORADO
From 28-DEC-06 12:00:00 to 29-DEC-06 06:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Storm in S & E JACKSON / LARIMER / N & NE GRAND / NW BOULDER COUNTIES ABOVE 9000 FEET, COLORADO
From 28-DEC-06 12:00:00 to 29-DEC-06 06:00:00 (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 28-DEC-06 12:00:00 to 29-DEC-06 06:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Storm totals along the Interstate 25 Corridor included:  17.5 inches at Ken Caryl, 15 inches, 3 miles south-southeast of Morrison 14 inches in Boulder, Horsetooth Inlet Bay and Lone Tree, 12 inches at Castle Rock, Highlands Ranch and Ralston Reservoir, 11 inches at Wheat Ridge, 10.5 inches in Littleton, 10 inches at Arvada, Broomfield, Louviers, 9 inches in Loveland, 8.5 inches at Lakewood and Thornton, 8 inches in Denver and Fort Collins.

Blizzard in SE ELBERT COUNTY BELOW 6000 FEET / SOUTH LINCOLN COUNTY, COLORADO
From 29-DEC-06 06:00:00 to 30-DEC-06 04:30:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Storm in LARIMER & BOULDER COUNTIES BETWEEN 6000 & 9000 FEET, COLORADO
From 28-DEC-06 12:00:00 to 29-DEC-06 06:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Storm in C & S WELD COUNTY, COLORADO
From 28-DEC-06 12:00:00 to 29-DEC-06 06:00:00 (MST-7)
Property damage: 102.00K
Crop damage: 0.00K
Reported by: Trained Spotter

The heavy wet snow caused a barn roof to collapse, at Shelton Dairy near La Salle.  The roof collapsed under the weight of an estimated 3 to 4 feet of snow.  One cow was killed.
Storm totals from around Weld County included:  6.5 inches, 2 miles north of Greeley, 6 inches, 3 miles west of Greeley, with 5 inches near Firestone.

Winter Storm in C & SE PARK COUNTY, COLORADO
From 28-DEC-06 12:00:00 to 29-DEC-06 06:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

In South Park, storm totals included:  14 inches at Fairplay and 8 miles southwest of Lake George, with 11 inches, 12 miles southwest of Hartsel.

Blizzard in N & NE ELBERT COUNTY BELOW 6000 FEET / N LINCOLN COUNTY, COLORADO
From 29-DEC-06 06:00:00 to 30-DEC-06 04:30:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter