CASPER, Wyo — Cooler, wetter weather is on its way through Wyoming Saturday night, bringing heavy snow to the northwest mountains and high wind advisories in the southeast travel district.
Winter Weather Advisory for western region
A winter weather advisory will be in effect until 5:00 pm Sunday for the western mountains and until 11:00 pm for the Uinta mountains. Rain could turn to snow overnight along the I-80 corridor.
Snow is expected overnight tonight and again Sunday afternoon, NWS said.
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In the Absaroka and Beartooth Mountains, 8-15 inches of snow are forecast with the highest amounts on northeast facing slopes. Wind gusts could be as high as 35 mph.
“Expect winter driving conditions and possibly difficult passage over Teton and Togwotee passes Saturday evening through Sunday,” NWS said.
West Wind River Mountains: Snowfall amounts of 6-10 inches with locally higher amounts are affect. South Pass travel will be impacted. The alert is in effect until 8:00 pm Sunday.
In the Yellowstone National Park area including Lake, Mammoth, and the Teton and Gros Ventre mountains, 4-6 inches of snow accumulation are expected. The alert is in effect until 5:00 pm Sunday.
The Bighorn Mountains are expected to get 2-5 inches with this system, impacting travel on Granite and Powder River passes and the Summit on Highway Alternate 14.
The winter weather advisory will affect the Uinta Mountains in the southwest until 11:00 pm Sunday, with 4-10 inch accumulations expected.
Winds in the central northeast
Campbell County: An air quality alert is in effect due to blowing dust and 50 mph gusts overnight Saturday.
Much of Johnson County will experience 20 to 30 mph with some gusts of 40 to 45 mph Sunday afternoon, though there will be a lull overnight.
High wind warnings will take effect in the southeast travel district at 11:00 pm Saturday and last through 11:00 am Sunday, with winds easing in the afternoon. Scattered snow showers are expected overnight and into Sunday.
“A few heavier snow showers could combine with gusty winds to produce low visibilities, overall impacts are expected to be low,” NWS said.
Southwest winds 35 to 45 mph with gusts up to 65 mph are expected along:
- Interstate 80 between Laramie and Rawlins, including Arlington and Elk Mountain
- Interstate 80 Summit between Laramie and Cheyenne,
- Interstate 25 near Bordeaux between Chugwater and Wheatland.
Southwest winds 35 to 45 mph with gusts up to 70 mph are expected in the following areas:
- South and central Laramie Range
- South Laramie Range foothills counties
- Southwest Platte County,
- North Snowy Range foothills