A strong storm system moved off the Pacific Northwest coast and into the central Rockies and then moved northeast over the northern plains. This system produced heavy snow, strong winds and blizzard conditions across portions of southeast Wyoming and the western Nebraska panhandle.

Blizzard in CONVERSE COUNTY LOWER ELEVATIONS, WYOMING
From 29-DEC-10 06:00:00 to 31-DEC-10 14:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

ASOS reported visibilities of 1/2 mile and winds gusting over 35 mph. Law enforcement reported blizzard conditions. Total snowfall over 6 inches.

Blizzard in NIOBRARA COUNTY, WYOMING
From 29-DEC-10 06:00:00 to 31-DEC-10 14:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Law enforcement reported blizzard conditions between Douglas, WY and Harrison, NE across Niobrara County.

Blizzard in CENTRAL LARAMIE RANGE AND SOUTHWEST PLATTE COUNTY, WYOMING
From 29-DEC-10 06:00:00 to 31-DEC-10 14:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

WYDOT cameras at Bordeaux showed zero visibility with blizzard conditions verified by law enforcement. Sensor recorded gusts of 35 mph.

Blizzard in EAST PLATTE COUNTY, WYOMING
From 29-DEC-10 06:00:00 to 31-DEC-10 14:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Reported blizzard conditions SSW of Manville with 6 inches of snow. Law enforcement estimated wind gusts of 70 mph at milepost 116 of Interstate 25 4 miles north northwest of Glendo at scene of automobile accident.

Blizzard in SOUTH LARAMIE RANGE, WYOMING
From 29-DEC-10 06:00:00 to 31-DEC-10 14:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

WYDOT webcams indicated zero visibilities across the summit. WYDOT sensors recorded wind gusts in excess of 40 mph throughout the day. Reports of over 6 inches of snow over the summit.

Blizzard in SOUTH LARAMIE RANGE FOOTHILLS, WYOMING
From 29-DEC-10 06:00:00 to 31-DEC-10 14:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

NWS employee reported blizzard conditions with a measured peak wind gust of 51 mph and zero visibility with snow and blowing snow.

Blizzard in CENTRAL LARAMIE COUNTY, WYOMING
From 29-DEC-10 06:00:00 to 31-DEC-10 14:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Blizzard conditions reported at WFO Cheyenne. Visibilities ranged from 1/8 to 1/2 mile in snow and blowing snow with winds gusting over 35 mph.  Snow drifts of 18 inches at the office.

Blizzard in EAST LARAMIE COUNTY, WYOMING
From 29-DEC-10 06:00:00 to 31-DEC-10 14:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

WYDOT webcams indicated near zero visibility with snow and blowing snow.  Pine Bluffs AWOS recorded wind gusts in excess of 40 mph.

Winter Storm in NORTH LARAMIE RANGE, WYOMING
From 29-DEC-10 06:00:00 to 31-DEC-10 14:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

COOP observer near Esterbrooke reported 12 inches of snow.

Winter Storm in SHIRLEY BASIN, WYOMING
From 29-DEC-10 06:00:00 to 31-DEC-10 14:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

COOP observer reported 7.2 inches of snow in Shirley Basin.

Winter Storm in CENTRAL CARBON COUNTY, WYOMING
From 29-DEC-10 06:00:00 to 31-DEC-10 14:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: SNOTEL

Sage Creek Basin SNOTEL at 7850 feet recorded 12 inches of snow.

Winter Storm in SIERRA MADRE RANGE, WYOMING
From 29-DEC-10 06:00:00 to 31-DEC-10 14:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: SNOTEL

Little Snake River SNOTEL at 8915 feet recorded 26 inches of snow.

Blizzard in GOSHEN COUNTY, WYOMING
From 29-DEC-10 06:00:00 to 31-DEC-10 14:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

COOP observer reported blizzard conditions and around 10 inches of snow.  Law enforcement officials reported visibility of only a block in Torrington with an average of 6 inches of snow.  The Torrington ASOS reported gusts in excess of 40 mph during the day. Five foot drifts reported across the county.