A potent Pacific low pressure system tracked east across Wyoming and Colorado and produced widespread moderate to heavy snow.  Strong winds of 35 to 55 mph created significant blowing and drifting snow and low visibility throughout much of southeast Wyoming.  Portions of Interstates 25 and 80 were closed due to dangerous travel conditions.  Total snowfall ranged from 6 to 16 inches.

Winter Storm in NIOBRARA COUNTY, WYOMING
From 20-JAN-18 14:00:00 to 21-JAN-18 14:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Nine inches of snow was reported at Lance Creek.

Winter Storm in EAST PLATTE COUNTY, WYOMING
From 20-JAN-18 14:00:00 to 21-JAN-18 18:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A foot of snow was reported at Glendo.

Winter Storm in GOSHEN COUNTY, WYOMING
From 20-JAN-18 14:00:00 to 21-JAN-18 20:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Six inches of snow was reported nine miles northeast of Hartville.

Winter Storm in GOSHEN COUNTY, WYOMING
From 20-JAN-18 14:00:00 to 21-JAN-18 18:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Seven inches of snow was reported at Torrington and nine miles south of Torrington.

Winter Storm in GOSHEN COUNTY, WYOMING
From 20-JAN-18 14:00:00 to 21-JAN-18 18:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Seven inches of snow was reported at Yoder.

Winter Storm in LARAMIE VALLEY, WYOMING
From 20-JAN-18 14:00:00 to 21-JAN-18 14:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Six inches of snow was reported at Rock River.

Winter Storm in SOUTH LARAMIE RANGE FOOTHILLS, WYOMING
From 20-JAN-18 14:00:00 to 21-JAN-18 18:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Eight inches of snow was reported three miles south of Vedauwoo.

Winter Storm in GOSHEN COUNTY, WYOMING
From 20-JAN-18 14:00:00 to 21-JAN-18 18:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Ten inches of snow was reported at Lingle.

Winter Storm in EAST LARAMIE COUNTY, WYOMING
From 20-JAN-18 14:00:00 to 21-JAN-18 18:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Four to six inches of snow was reported at Carpenter and Pine Bluffs.

Winter Storm in CENTRAL LARAMIE COUNTY, WYOMING
From 20-JAN-18 14:00:00 to 21-JAN-18 18:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Six to seven inches of snow was reported throughout Cheyenne.

Winter Storm in CENTRAL CARBON COUNTY, WYOMING
From 20-JAN-18 14:00:00 to 21-JAN-18 10:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Six inches of snow was observed 10 miles east of Sinclair.

Winter Storm in CENTRAL CARBON COUNTY, WYOMING
From 20-JAN-18 14:00:00 to 21-JAN-18 10:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Four to six inches of snow was reported two miles west of Rawlins.  Snow drifts were up to two feet.

Winter Storm in NORTH SNOWY RANGE FOOTHILLS, WYOMING
From 20-JAN-18 14:00:00 to 22-JAN-18 04:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Nine inches of snow was measured at Elk Mountain.

Winter Storm in CENTRAL LARAMIE COUNTY, WYOMING
From 20-JAN-18 14:00:00 to 21-JAN-18 18:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

Seven inches of snow was measured two miles north-northeast of Cheyenne.  Snow drifts were one to two feet.

Winter Storm in CENTRAL LARAMIE COUNTY, WYOMING
From 20-JAN-18 14:00:00 to 21-JAN-18 18:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

Six and a half inches of snow was measured 11 miles north of Cheyenne.  Snow drifts were one to two feet.

Winter Storm in NORTH LARAMIE RANGE, WYOMING
From 20-JAN-18 05:00:00 to 21-JAN-18 11:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: SNOTEL

The Windy Peak SNOTEL site (elevation 7900 ft) estimated 13 inches of snow.

Winter Storm in NORTH LARAMIE RANGE, WYOMING
From 20-JAN-18 05:00:00 to 21-JAN-18 11:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: SNOTEL

The La Prele Creek SNOTEL site (elevation 8375 ft) estimated 12 inches of snow.

Winter Storm in SNOWY RANGE, WYOMING
From 20-JAN-18 05:00:00 to 21-JAN-18 11:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: SNOTEL

The Medicine Bow SNOTEL site (elevation 10500 ft) estimated 12 inches of snow.

Winter Storm in CENTRAL LARAMIE COUNTY, WYOMING
From 20-JAN-18 14:00:00 to 21-JAN-18 18:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

The NWS at Cheyenne measured 6.8 inches of snow.

Winter Storm in SIERRA MADRE RANGE, WYOMING
From 20-JAN-18 05:00:00 to 21-JAN-18 11:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: SNOTEL

The Sage Creek Basin SNOTEL site (elevation 7850 ft) estimated 13 inches of snow.

Winter Storm in SIERRA MADRE RANGE, WYOMING
From 20-JAN-18 05:00:00 to 21-JAN-18 11:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: SNOTEL

The Divide Peak SNOTEL site (elevation 8880 ft) estimated 12 inches of snow.

Winter Storm in SIERRA MADRE RANGE, WYOMING
From 20-JAN-18 05:00:00 to 21-JAN-18 11:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: SNOTEL

The Old Battle SNOTEL site (elevation 10000 ft) estimated 16 inches of snow.

Winter Storm in SIERRA MADRE RANGE, WYOMING
From 20-JAN-18 05:00:00 to 21-JAN-18 11:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: SNOTEL

The Webber Springs SNOTEL site (elevation 9250 ft) estimated 15 inches of snow.

Winter Storm in SIERRA MADRE RANGE, WYOMING
From 20-JAN-18 05:00:00 to 21-JAN-18 11:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: SNOTEL

The Little Snake River SNOTEL site (elevation 8915 ft) estimated 12 inches of snow.

Winter Storm in CONVERSE COUNTY LOWER ELEVATIONS, WYOMING
From 20-JAN-18 14:00:00 to 21-JAN-18 14:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Eleven inches of snow was measured four miles west-southwest of Douglas.

Winter Storm in CONVERSE COUNTY LOWER ELEVATIONS, WYOMING
From 20-JAN-18 14:00:00 to 21-JAN-18 14:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Seven inches of snow was measured one mile southwest of Douglas.

Winter Storm in CONVERSE COUNTY LOWER ELEVATIONS, WYOMING
From 20-JAN-18 14:00:00 to 21-JAN-18 14:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Ten inches of snow was observed at Douglas.

Winter Storm in NIOBRARA COUNTY, WYOMING
From 20-JAN-18 14:00:00 to 21-JAN-18 14:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Six to twelve inches of snow was observed in and around Lusk.

Winter Storm in LARAMIE VALLEY, WYOMING
From 20-JAN-18 14:00:00 to 21-JAN-18 14:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Six inches of snow was observed 27 miles southwest of Laramie.

Winter Storm in CONVERSE COUNTY LOWER ELEVATIONS, WYOMING
From 20-JAN-18 14:00:00 to 21-JAN-18 14:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Seven inches of snow was measured one mile southwest of Glenrock.

Winter Storm in CONVERSE COUNTY LOWER ELEVATIONS, WYOMING
From 20-JAN-18 14:00:00 to 21-JAN-18 14:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Nine inches of snow was measured 12 miles northwest of Lost Springs.

Winter Storm in SOUTH LARAMIE RANGE, WYOMING
From 20-JAN-18 14:00:00 to 22-JAN-18 14:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Fourteen inches of snow was measured 21 miles west-southwest of FE Warren AFB.

Winter Storm in CENTRAL LARAMIE RANGE AND SOUTHWEST PLATTE COUNTY, WYOMING
From 20-JAN-18 14:00:00 to 21-JAN-18 14:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Six inches of snow was measured 20 miles southwest of Wheatland.

Winter Storm in EAST PLATTE COUNTY, WYOMING
From 20-JAN-18 14:00:00 to 21-JAN-18 18:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Seven inches of snow was measured 13 miles south-southwest of Manville.

Winter Storm in CENTRAL CARBON COUNTY, WYOMING
From 20-JAN-18 14:00:00 to 21-JAN-18 10:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Ten inches of snow was observed at Hanna.

Winter Storm in SHIRLEY BASIN, WYOMING
From 20-JAN-18 14:00:00 to 21-JAN-18 10:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Nine inches of snow was measured at Shirley Basin.

Winter Storm in EAST PLATTE COUNTY, WYOMING
From 20-JAN-18 14:00:00 to 21-JAN-18 18:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Seven and a half inches of snow was reported at Wheatland.

Winter Storm in CENTRAL CARBON COUNTY, WYOMING
From 20-JAN-18 14:00:00 to 21-JAN-18 10:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Four to six inches of snow was reported at Sinclair.

Winter Storm in NORTH SNOWY RANGE FOOTHILLS, WYOMING
From 20-JAN-18 14:00:00 to 22-JAN-18 04:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Ten inches of snow was measured two miles south of Elk Mountain.

Winter Storm in SOUTH LARAMIE RANGE FOOTHILLS, WYOMING
From 20-JAN-18 14:00:00 to 21-JAN-18 18:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Twelve inches of snow was measured four miles southeast of Buford.

Winter Storm in FERRIS/SEMINOE/SHIRLEY MOUNTAINS, WYOMING
From 20-JAN-18 14:00:00 to 21-JAN-18 10:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Six inches of snow was measured at Muddy Gap.

Winter Storm in SOUTHWEST CARBON COUNTY, WYOMING
From 20-JAN-18 14:00:00 to 21-JAN-18 10:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Four to six inches of snow was reported in and around Baggs.

Winter Storm in UPPER NORTH PLATTE RIVER BASIN, WYOMING
From 20-JAN-18 14:00:00 to 21-JAN-18 10:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Six inches of snow was reported at Saratoga.

Winter Storm in GOSHEN COUNTY, WYOMING
From 20-JAN-18 14:00:00 to 21-JAN-18 18:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Six inches of snow was reported 10 miles southwest of Yoder.

Winter Storm in EAST PLATTE COUNTY, WYOMING
From 20-JAN-18 14:00:00 to 21-JAN-18 18:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Eight inches of snow was reported at Wheatland.

Winter Storm in NIOBRARA COUNTY, WYOMING
From 20-JAN-18 14:00:00 to 21-JAN-18 14:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A foot of snow was reported 10 and 15 miles north of Lusk.