A moist Pacific trough moved into western Wyoming on New Years Day and brought heavy snow to many areas. Amounts over a foot were common in the mountains with close to 2 feet in the Tetons, including 21 inches of new snow at Jackson Hole, Wyoming. Heavy snow also fell in the valleys, with 13 inches of snow at Alpine, Wyoming and 6 to 12 inches around the Jackson Valley. Meanwhile, strong mid level winds were forced to the ground by favorable jet dynamics in the wind prone areas East of the Divide. Wind gusts over 70 mph were recorded near Clark, Wyoming with wind gusts of 66 mph spreading into the west side of Cody, Wyoming. Wind gusts of 75 mph were reported south of Casper, Wyoming in Natrona County as well with 60 mph winds at Jeffrey City, Wyoming. In and around Cody, Wyoming, damage was reported. This included damaged fences, a destroyed metal shed that landed on a car and a roof torn off of a trailer.

Winter Storm in TETON & GROS VENTRE MOUNTAINS, WYOMING
From 01-JAN-20 00:00:00 to 02-JAN-20 03:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy snow of 1 to 2 feet fell throughout much of the Tetons and Gros Ventre mountains. This included 21 inches at the Jackson Hole Ski Resort.

Winter Storm in SALT RIVER & WYOMING RANGES, WYOMING
From 01-JAN-20 01:00:00 to 02-JAN-20 03:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: SNOTEL

Heavy snow fell in the Salt and Wyoming Range. This highest amount was 19 inches at the Cottonwood Creek SNOTEL site.

Winter Storm in STAR VALLEY, WYOMING
From 01-JAN-20 00:00:00 to 02-JAN-20 03:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Snowfall amounts through the Star Valley ranged from 6 inches at Afton to 13 inches at Alpine, Wyoming.

High Wind in NATRONA COUNTY LOWER ELEVATIONS, WYOMING
From 01-JAN-20 00:00:00 to 01-JAN-20 09:00:00 (MST-7)
Magnitude: 65.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

High winds occurred in Natrona County. The highest gusts were along the wind prone areas of Wyoming Boulevard along the south side of Casper, Wyoming, where the maximum wind gust recorded was 75 mph.

High Wind in CODY FOOTHILLS, WYOMING
From 01-JAN-20 00:00:00 to 01-JAN-20 07:45:00 (MST-7)
Magnitude: 66.00 MG
Property damage: 15.00K
Crop damage: 0.00K
Reported by: Mesonet

High winds occurred in the northern Cody foothills. The highest gust were in the wind prone areas near Clark, Wyoming, where a maximum gust of 76 mph was recorded. The high winds also reached into Cody, Wyoming, as well, with a gust of 66 mph on the west side of the city. The high winds damaged a trailer roof, fence, shed, car and storm door.

Winter Storm in JACKSON HOLE, WYOMING
From 01-JAN-20 01:00:00 to 02-JAN-20 00:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy snow fell in the Jackson Valley. Amounts ranged from 7 inches in the town of Jackson to 12 inches near Teton Village, Wyoming.

High Wind in GREEN MOUNTAINS & RATTLESNAKE RANGE, WYOMING
From 01-JAN-20 01:00:00 to 01-JAN-20 11:50:00 (MST-7)
Magnitude: 66.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

High winds occurred through the area. Wind gusts of 76 mph occurred at the high elevation sites of Camp Creek and Fales Rock. At the lower elevations, Jeffrey City, Wyoming, had a wind gust to 60 mph.