A series of front and upper level disturbances combined with a prolonged and deep flow of Pacific moisture to bring a prolonged period of snow to much of western and northern Wyoming. Total snowfall eclipsed 4 feet in portions of the Tetons as well as the Salt and Wyoming Range. Even in the western Valleys, totals of over a foot were commonplace with some areas receiving over 2 feet. This combined with strong winds that gusted to hurricane force at times in the mountains resulted in road closures and avalanches. Heavy snow also fell across northern Wyoming where a foot or more of new snow fell across northern portions of Big Horn and Park counties. Meanwhile, the passage of fronts brought strong winds to portions of Park, Fremont and Natrona Counties where wind gusts past 70 mph were recorded at times.

Winter Storm in CODY FOOTHILLS, WYOMING
From 10-JAN-17 15:00:00 to 11-JAN-17 17:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy snow fell across northern Cody Foothills. The highest amount was at Pahaska where 22 inches fell. At Wapiti, 13 inches fell and 5 to 10 inches was measured through most of Cody. Very little snow fell further south around Meeteetse.

High Wind in GREEN MOUNTAINS & RATTLESNAKE RANGE, WYOMING
From 07-JAN-17 21:50:00 to 11-JAN-17 17:50:00 (MST-7)
Magnitude: 68.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: RAWS

The RAWS site at Fales Rock had many wind gusts past 58 mph; including a maximum of 78 mph. Other top winds gusts in the area included 76 mph at Camp Creek and 72 mph at Beaver Rim.

Winter Storm in UPPER GREEN RIVER BASIN FOOTHILLS, WYOMING
From 07-JAN-17 17:00:00 to 10-JAN-17 23:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Very heavy snow fell across most of the region. The highest amounts were measured at Bondurant where 32.6 inches of new snow fell. Further south, around a foot fell near Pinedale.

High Wind in NATRONA COUNTY LOWER ELEVATIONS, WYOMING
From 07-JAN-17 19:16:00 to 11-JAN-17 01:11:00 (MST-7)
Magnitude: 81.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

There were many wind gusts over 58 mph along Outer Drive south of Casper, including a maximum gust of 81 mph.

High Wind in LANDER FOOTHILLS, WYOMING
From 10-JAN-17 21:40:00 to 10-JAN-17 21:40:00 (MST-7)
Magnitude: 50.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

The ASOS at the Lander airport recorded a wind gust of 58 mph.

Winter Storm in UPPER GREEN RIVER BASIN, WYOMING
From 07-JAN-17 18:00:00 to 11-JAN-17 17:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy snow fell in portions of the Upper Green River Basin. At Big Piney, 10 inches of new snow was measured.

Winter Storm in SOUTH LINCOLN COUNTY, WYOMING
From 07-JAN-17 19:00:00 to 11-JAN-17 16:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy snow fell in southern Lincoln County. Some of the amounts included 9 inches at Kemmerer and 7 inches north of Cokeville.

Winter Storm in ABSAROKA MOUNTAINS, WYOMING
From 07-JAN-17 18:00:00 to 11-JAN-17 17:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: SNOTEL

Heavy snow fell over most of the Absarokas. Some of the highest amounts included 32 inches and 30 inches at the Wolverine and Blackwater SNOTEL sites respectively.

Winter Storm in WIND RIVER MOUNTAINS WEST, WYOMING
From 07-JAN-17 23:00:00 to 11-JAN-17 11:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: SNOTEL

Very heavy snow fell across the western slope of the Wind River Range. The highest total observed was 38 inches of the Kendall Ranger Station SNOTEL. The heavy snow combined with strong winds to close South Pass for several hours as well.

Winter Weather in WIND RIVER MOUNTAINS EAST, WYOMING
From 08-JAN-17 01:00:00 to 11-JAN-17 16:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: SNOTEL

Very heavy snow fell across the eastern slopes of the Wind River Range. The highest snowfall totals recorded were 54 inches at the South Pass SNOTEL and 53 inches at the Deer Park SNOTEL. The snow combined with strong winds to bring significant blowing and drifting of the snow that made travel very difficult and resulted in the closure of South Pass at times during the event.

Winter Storm in STAR VALLEY, WYOMING
From 07-JAN-17 17:00:00 to 11-JAN-17 17:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy snow fell throughout the Star Valley. The highest amounts were in the north and in the higher elevations where 29 inches fell at the Star Valley Ranch and 25 inches fell at Alpine. Further south, there was much less around Afton where the snow mixed and changed to rain for a time, limiting accumulation somewhat.

Winter Storm in SALT RIVER & WYOMING RANGES, WYOMING
From 07-JAN-17 23:00:00 to 11-JAN-17 14:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: SNOTEL

Extremely heavy snow fell over the Salt and Wyoming Range. All SNOTEL locations reported at least three feet of snow with several topping four feet. Some of the highest totals included 56 inches at the Blind Bull Summit SNOTEL and 53 inches at the Spring Creek and Indian Creek SNOTELS.

High Wind in CODY FOOTHILLS, WYOMING
From 09-JAN-17 18:14:00 to 09-JAN-17 18:44:00 (MST-7)
Magnitude: 78.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

A 78 mph gust was measured at the weather sensor, five miles west-northwest of Clark.

Winter Storm in NORTH BIG HORN BASIN, WYOMING
From 10-JAN-17 17:00:00 to 11-JAN-17 18:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy snow fell in a narrow band around the Lovell area. A foot of new snow was common with the highest amount of 19.1 inches. Amounts dropped off rapidly further south with less than three inches reported around Greybull.

Winter Storm in YELLOWSTONE NATIONAL PARK, WYOMING
From 07-JAN-17 10:00:00 to 11-JAN-17 15:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: SNOTEL

Very heavy snow fell across portions of Yellowstone Park. The hardest hit areas where in the southwestern portions of the Park. Over 3 feet of snow fell in some locations, including 50 inches at the Lewis Lake Divide SNOTEL. Less snow fell in the north, where amounts generally ranged from 9 to 18 inches.

Winter Storm in TETON & GROS VENTRE MOUNTAINS, WYOMING
From 07-JAN-17 12:00:00 to 11-JAN-17 20:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: SNOTEL

Very heavy snow fell over a four day period across the Tetons. Many areas received over three feet of new snow with some areas exceeding four feet. Teton Pass was closed at times for avalanche control. Some of the snowfall totals included 58 inches at the Phillips Bench SNOTEL and 44 inches at the Jackson Hole Ski Resort.

Winter Storm in JACKSON HOLE, WYOMING
From 07-JAN-17 19:00:00 to 11-JAN-17 18:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Very heavy snow fell over the Jackson Valley over four days. The highest amounts were 40 recorded, three miles SSW of Wilson and two miles west-southwest of Jackson. In the town of Jackson, the snow mixed or changed to rain at times and this held accumulations down to around 9 to 18 inches.