A complex and potent winter storm crossed western and central Wyoming and brought heavy snow and high wind to many locations. Strong winds occurred ahead of the storm in portions of central Wyoming, with some of the strongest gusts were 78 mph at Fales Rock and 75 mph along Wyoming Boulevard on the south side of Casper. Following that, heavy snow fell. Over a foot of new snow fell in portions of the Tetons, Absarokas and Casper Mountain as well as in Yellowstone Park. In the lower elevations, the heaviest snow fell around Casper where up to 15 inches was measured. Other areas with over 6 inches included around Rock Springs, northern Big Horn County and around Bondurant.

Winter Storm in YELLOWSTONE NATIONAL PARK, WYOMING
From 17-FEB-18 10:00:00 to 18-FEB-18 18:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: SNOTEL

Heavy snow fell in portions of Yellowstone Park. The heaviest amount was 14 inches at the Canyon SNOTEL site and at the Old Faithful Ranger Station.

Winter Storm in TETON & GROS VENTRE MOUNTAINS, WYOMING
From 17-FEB-18 13:00:00 to 18-FEB-18 11:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy snow fell in portions of the Tetons. The highest amount was 15 inches at the top of the Jackson Hole Ski Resort.

Winter Storm in ABSAROKA MOUNTAINS, WYOMING
From 17-FEB-18 06:00:00 to 18-FEB-18 13:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: SNOTEL

Heavy snow fell in portions of the Absarokas. The heaviest snow fell at the Beartooth Lake SNOTEL site where 15 inches of new snow was recorded.

High Wind in NATRONA COUNTY LOWER ELEVATIONS, WYOMING
From 17-FEB-18 14:50:00 to 18-FEB-18 00:00:00 (MST-7)
Magnitude: 65.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

There were numerous wind gusts over 60 mph along Wyoming Boulevard south of Casper including a maximum wind gust of 75 mph.

High Wind in GREEN MOUNTAINS & RATTLESNAKE RANGE, WYOMING
From 17-FEB-18 11:00:00 to 18-FEB-18 02:00:00 (MST-7)
Magnitude: 68.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: RAWS

Strong winds occurred in the higher elevations of the Green and Rattlesnake Range. The highest wind gust was 78 mph at Fales Rock.

Winter Storm in NATRONA COUNTY LOWER ELEVATIONS, WYOMING
From 18-FEB-18 13:00:00 to 19-FEB-18 17:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Heavy snow fell throughout Natrona County, ranging from 6 inches at Midwest to 15 inches in Evansville. At the Natrona County airport, 14.7 inches of snow was measured.

Winter Storm in GREEN MOUNTAINS & RATTLESNAKE RANGE, WYOMING
From 18-FEB-18 12:00:00 to 19-FEB-18 17:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Moderate to heavy snow and gusty wind occurred through much of the region. Highway 789 was closed for several hours due to winter conditions.

Winter Storm in CASPER MOUNTAIN, WYOMING
From 18-FEB-18 12:00:00 to 19-FEB-18 18:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: SNOTEL

At the Casper Mountain SNOTEL site, 12 inches of new snow fell.

Winter Storm in JACKSON HOLE, WYOMING
From 17-FEB-18 11:00:00 to 18-FEB-18 11:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

At the base of the Jackson Hole Ski Resort; 6 inches of new snow was reported.

Winter Storm in UPPER GREEN RIVER BASIN FOOTHILLS, WYOMING
From 17-FEB-18 20:00:00 to 18-FEB-18 14:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Heavy snow fell in the northern portions of the Upper Green River Basin Foothills. Around Bondurant, 8 inches of snow fell. Amounts decreased further south, with only 2 inches around Pinedale.

Winter Storm in SOUTH LINCOLN COUNTY, WYOMING
From 18-FEB-18 21:00:00 to 19-FEB-18 13:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter reported 6 inches of snow in Kemmerer.

Winter Storm in FLAMING GORGE, WYOMING
From 18-FEB-18 21:00:00 to 19-FEB-18 21:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter reported 8 inches of snow at the Buckboard Marina.

Winter Storm in EAST SWEETWATER COUNTY, WYOMING
From 18-FEB-18 21:00:00 to 19-FEB-18 21:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotters reported 5 to 6 inches of snow in Wamsutter.

Winter Storm in NORTH BIG HORN BASIN, WYOMING
From 18-FEB-18 06:00:00 to 19-FEB-18 17:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotters reported around 8 inches of snow around Lovell. Amounts dropped further south with only around 2.5 inches around Basin.

Winter Storm in ROCK SPRINGS & GREEN RIVER, WYOMING
From 18-FEB-18 21:00:00 to 19-FEB-18 21:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

The general public and trained spotters reported from 6 to 8 inches of snow around Rock Springs. Around Green River, 5 to 7 inches of snow fell.

Winter Storm in SALT RIVER & WYOMING RANGES, WYOMING
From 17-FEB-18 20:00:00 to 18-FEB-18 13:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: SNOTEL

Heavy snow fell in portions of the Salt and Wyoming Range. The highest amount recorded was 13 inches at the Willow Creek SNOTEL site.

High Wind in LANDER FOOTHILLS, WYOMING
From 18-FEB-18 02:00:00 to 18-FEB-18 02:00:00 (MST-7)
Magnitude: 64.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

The CWOP station along the North Fork of the Popo Agie River reported a wind gust of 74 mph.

Winter Storm in STAR VALLEY, WYOMING
From 17-FEB-18 19:00:00 to 18-FEB-18 10:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Heavy snow fell in portions of the Star Valley. The highest amount recorded was 8 inches to the NNE of Thayne.