Winter Storm Warnings
December 21 2025
* WHAT...Heavy snow expected. Total snow accumulations 10 to 20
inches. Winds gusting as high as 55 mph.
* WHERE...Absaroka Mountains and Yellowstone National Park.
* WHEN...From 11 PM this evening to 5 AM MST Monday.
* IMPACTS...Travel could be very difficult.
* WHAT...Heavy snow expected. Total snow accumulations 12 to 24
inches. Winds gusting as high as 70 mph.
* WHERE...Wind River Mountains East and Wind River Mountains West.
* WHEN...From 11 PM this evening to 5 AM MST Monday.
* IMPACTS...Travel could be very difficult. Hazardous conditions
could impact travel along South Pass.
* WHAT...Heavy snow expected. Total snow accumulations 12 to 18
inches. Winds gusting as high as 60 mph.
* WHERE...Salt River and Wyoming Ranges.
* WHEN...From 11 PM this evening to 5 AM MST Monday.
* IMPACTS...Travel could be very difficult, including over Satl
River Pass.
* WHAT...Heavy snow expected. Total snow accumulations between 18
and 30 inches. Winds gusting as high as 50 mph.
* WHERE...Teton and Gros Ventre Mountains.
* WHEN...From 11 PM this evening to 5 AM MST Monday.
* IMPACTS...Travel could be very difficult, especially across Teton
and Togwotee Passes.
* WHAT...Snow. Additional snow accumulations 4 to 8 inches. Winds
gusting as high as 50 mph.
* WHERE...Sierra Madre Range and Snowy Range.
* WHEN...Until 8 PM MST this evening.
* IMPACTS...Travel could be very difficult. Very strong winds could
cause extensive tree damage.
* WHAT...Southwest winds 30 to 50 mph with gusts up to 80 mph
expected.
* WHERE...Southeast Wyoming wind-prone areas including Interstate 80
near Arlington and the Summit and Interstate 25 near Bordeaux, and
South Laramie Range Foothills.
* WHEN...From 2 PM Sunday to 2 PM MST Monday.
* IMPACTS...Mainly to transportation. Strong cross winds will be
hazardous to light weight or high profile vehicles, including
campers and tractor trailers.
