A deep fetch of Pacific moisture from an atmospheric river and an Arctic Front dropping south combined to bring very heavy snow to much of western and central Wyoming. The heaviest snow fell across the western mountains, especially in the favored westerly flow upslope locations. The highest snowfall amounts were in the Tetons, with the Jackson Hole Ski Resort reporting 47 inches of new snow. Portions of the Salt and Wyoming Range also picked up over 2 feet of new snow, with over a foot of new snow in the Bighorn Range and Wind River Range. In the lower elevations, over a foot of new snow fell in the Jackson Valley, Star Valley and Natrona County, with much of northern Wyoming seeing over 6 inches of new snow. The snow combined with gusty winds to produce widespread travel problems including the closure of several major roads for several days, disrupting commerce.

Winter Storm in BIGHORN MOUNTAINS WEST, WYOMING
From 26-JAN-23 10:00:00 to 28-JAN-23 17:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: SNOTEL

Heavy snow fell in the western Bighorn mountains, with a maximum amount of 21 inches.

Winter Storm in NORTHEAST JOHNSON COUNTY, WYOMING
From 26-JAN-23 18:00:00 to 28-JAN-23 21:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Snowfall amounts around northern Johnson County ranged from 7 to 11 inches. The heavy snow and gusty wind brought the closure of Interstates 25 and 90.

Winter Storm in BIGHORN MOUNTAINS SOUTHEAST, WYOMING
From 26-JAN-23 12:00:00 to 28-JAN-23 17:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: SNOTEL

Up to 13 inches of new snow fell in the eastern Bighorn Range.

Winter Storm in STAR VALLEY, WYOMING
From 26-JAN-23 20:00:00 to 29-JAN-23 12:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

New snowfall amounts around the Star Valley ranged from 9 inches at Afton to 23 inches near Thayne.

Winter Storm in SALT RIVER & WYOMING RANGES, WYOMING
From 26-JAN-23 20:00:00 to 29-JAN-23 12:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: SNOTEL

Most reporting sites in the Salt and Wyoming Range reported over a foot of new snow, with a maximum of 28 inches of new snow at Blind Bull Summit.

Winter Storm in NATRONA COUNTY LOWER ELEVATIONS, WYOMING
From 27-JAN-23 17:00:00 to 29-JAN-23 15:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy snow fell across much of Natrona County, with the highest amounts in the foothills of Casper Mountain where 17 inches of snow fell. Snowfall amounts generally decreased to the north and west of Casper. The heavy snow resulted in the closure of Interstate 25 and US 20 26 for several hours.

Winter Storm in CASPER MOUNTAIN, WYOMING
From 27-JAN-23 15:00:00 to 29-JAN-23 15:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: SNOTEL

The SNOTEL sites on Casper Mountain reported 12 to 15 inches of new snow.

Winter Storm in YELLOWSTONE NATIONAL PARK, WYOMING
From 26-JAN-23 15:00:00 to 28-JAN-23 21:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: SNOTEL

Over a foot of snow fell in the higher elevations of Yellowstone Park, with a maximum amount of 19 inches near the east entrance of the park.

Winter Storm in ABSAROKA MOUNTAINS, WYOMING
From 27-JAN-23 00:00:00 to 28-JAN-23 21:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: SNOTEL

Heavy snow fell in portions of the Absarokas, with a maximum amount of 20 inches of new snow to the west of Sunlight Basin.

Winter Storm in WIND RIVER MOUNTAINS WEST, WYOMING
From 27-JAN-23 06:00:00 to 28-JAN-23 21:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: SNOTEL

New snowfall amounts in the western Wind River Range generally ranged from 12 to 16 inches.

Winter Storm in UPPER GREEN RIVER BASIN FOOTHILLS, WYOMING
From 27-JAN-23 06:00:00 to 29-JAN-23 12:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Snowfall amounts ranged from 6 inches around Pinedale to around a foot near Bondurant.

Winter Storm in JACKSON HOLE, WYOMING
From 26-JAN-23 15:00:00 to 29-JAN-23 00:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Snowfall amounts around the Jackson Valley generally ranged from 7 inches in the town of Jackson to 16 inches at Moose.

Winter Storm in SOUTHEAST BIG HORN BASIN, WYOMING
From 27-JAN-23 20:00:00 to 29-JAN-23 12:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter reported 11 inches of new snow north of Ten Sleep. Snowfall amounts dropped to under 6 inches further west.

Winter Storm in SOUTHEAST JOHNSON COUNTY, WYOMING
From 26-JAN-23 21:00:00 to 28-JAN-23 21:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Heavy snow and gusty wind brought the closure of Interstate 25.

Winter Storm in CODY FOOTHILLS, WYOMING
From 27-JAN-23 18:00:00 to 29-JAN-23 06:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter reported 6 inches of snow near Meeteetse.

Winter Storm in SOUTHWEST BIG HORN BASIN, WYOMING
From 27-JAN-23 20:00:00 to 29-JAN-23 08:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter reported 8.5 inches of new snow near Lucerne. Six inches of snow was reported in Thermopolis.

Winter Storm in UPPER WIND RIVER BASIN, WYOMING
From 26-JAN-23 20:00:00 to 29-JAN-23 12:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Snowfall amounts of 4 to 6 inches around Dubois, with gusty winds causing blowing and drifting snow.

Winter Storm in TETON & GROS VENTRE MOUNTAINS, WYOMING
From 26-JAN-23 15:00:00 to 29-JAN-23 00:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Park/Forest Service

Very heavy snow fell in portions of the Tetons. All observation sites reported over a foot of new snow. The highest amount was measured at the summit of the Jackson Hole Ski Resort where 47 inches of new snow was reported.