Hazard Report Provided By forecast.weather.gov

Hazardous Weather Outlook
National Weather Service Riverton WY
225 PM MDT Sat Oct 25 2025

WYZ001>020-022>030-261300-
Yellowstone National Park-Absaroka Mountains-Cody Foothills-
North Bighorn Basin-Southwest Bighorn Basin-Southeast Bighorn Basin-
Owl Creek and Bridger Mountains-Bighorn Mountains West-
Bighorn Mountains Southeast-Northeast Johnson County-
Southeast Johnson County-Teton and Gros Ventre Mountains-
Jackson Hole-Wind River Mountains West-Wind River Mountains East-
Upper Wind River Basin-Wind River Basin-Lander Foothills-
Green Mountains and Rattlesnake Range-
Natrona County Lower Elevations-Casper Mountain-Star Valley-
Salt River and Wyoming Ranges-Upper Green River Basin Foothills-
Upper Green River Basin-South Lincoln County-
Rock Springs and Green River-Flaming Gorge-East Sweetwater County-
225 PM MDT Sat Oct 25 2025

...Winter Storm Warnings and Winter Weather Advisories in effect
tonight through Monday afternoon for the Western Wyoming Mountains...

This Hazardous Weather Outlook is for Western and Central Wyoming.

.DAY ONE...This afternoon and tonight.

Gusty southwest winds will increase today ahead of the next weather
system.

This winter system moves into the northwest Wyoming mountains
tonight, with snow accumulation increasing after midnight.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

Sunday through Monday night...The winter system brings colder
temperatures, widespread gusty southwest winds 30 to 50 mph, and
western mountain snow. Expect winter weather travel conditions over
western mountain passes.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to Standard Operating Procedures.

$$

URGENT - WINTER WEATHER MESSAGE
National Weather Service Riverton WY
119 PM MDT Sat Oct 25 2025

WYZ014-015-261315-
/O.NEW.KRIW.WW.Y.0029.251026T0500Z-251027T1800Z/
Wind River Mountains West-Wind River Mountains East-
119 PM MDT Sat Oct 25 2025

...WINTER WEATHER ADVISORY IN EFFECT FROM 11 PM THIS EVENING TO NOON
MDT MONDAY...

* WHAT...Snow expected. Total snow accumulations of 12 to 18 inches
  above 10,000 ft and 6 to 12 inches between 9,000 ft and 10,000 ft.
  Generally less than 6 inches of snow expected below 9,000 ft.
  Winds gusting as high as 60 mph.

* WHERE...Wind River Mountains East and Wind River Mountains West.

* WHEN...From 11 PM this evening to noon MDT Monday.

* IMPACTS...Travel could be very difficult along mountain roads.

* ADDITIONAL DETAILS...4 to 8 inches of snow is expected across
  Union Pass. 2 to 4 inches is expected across South Pass.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling.

For graphical depictions of the snowfall forecast, including the
official NWS forecast, high end amounts, and low end amounts, visit
https://weather.gov/riw/winter .

For winter road conditions from the Wyoming Department of
Transportation, visit https://wyoroad.info .

&&

$$

Hazard Report Provided By forecast.weather.gov