Winter Storm Warning
URGENT - WINTER WEATHER MESSAGE
National Weather Service Riverton WY
208 PM MST Sat Dec 6 2025
WYZ008-070000-
/O.CON.KRIW.WS.W.0012.000000T0000Z-251207T0000Z/
Bighorn Mountains West-
208 PM MST Sat Dec 6 2025
...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS
AFTERNOON...
* WHAT...Additional snow accumulation of 1 to 3 inches. Winds
gusting as high as 35 mph may lead to areas of blowing snow.
* WHERE...Bighorn Mountains West.
* WHEN...Until 5 PM MST this afternoon.
* IMPACTS...Travel could be very difficult over Granite and Powder
River Passes.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency.
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 .
&&
$$
For more information from the National Weather Service, visit
https://weather.gov/riw/ .
Myers
URGENT - WINTER WEATHER MESSAGE
National Weather Service Billings MT
146 PM MST Sat Dec 6 2025
MTZ067-068-070700-
/O.CON.KBYZ.WS.W.0017.000000T0000Z-251207T0700Z/
Absaroka/Beartooth Mountains-Crazy Mountains-
Including the locations of Cooke City
146 PM MST Sat Dec 6 2025
...WINTER STORM WARNING REMAINS IN EFFECT UNTIL MIDNIGHT MST
TONIGHT...
* WHAT...Heavy snow occurring. Additional snow accumulations of 3 to
6 inches. Winds gusting as high as 50 mph in exposed areas.
* WHERE...Absaroka/Beartooth Mountains and Crazy Mountains.
* WHEN...Until midnight MST tonight.
* IMPACTS...Mountain recreation will be impacted by heavy
accumulating snow and blowing snow.
* ADDITIONAL DETAILS...The heaviest snowfall will occur on west and
northwest facing slopes, including the mountains near Cooke City.
The mountains around Red Lodge will see much less additional
snowfall, 0 to 3 inches.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Those in the backcountry should ensure they are prepared for
dangerous winter conditions.
&&
$$
Winter Weather Advisory
URGENT - WINTER WEATHER MESSAGE
National Weather Service Billings MT
146 PM MST Sat Dec 6 2025
MTZ171-WYZ198-070000-
/O.EXT.KBYZ.WW.Y.0039.000000T0000Z-251207T0000Z/
Pryor/Northern Bighorn Mountains-Northeast Bighorn Mountains-
Including the locations of Burgess Jct and Story
146 PM MST Sat Dec 6 2025
...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 5 PM MST THIS
AFTERNOON...
* WHAT...Snow occuring. Additional snow accumulations of 1 to 3
inches.
* WHERE...In Montana, Pryor/Northern Bighorn Mountains. In Wyoming,
Northeast Bighorn Mountains.
* WHEN...Until 5 PM MST this afternoon.
* IMPACTS...Outdoor recreation will be impacted by wintry conditions.
* ADDITIONAL DETAILS...Travel on highway 14 will be impacted by
wintry conditions and slick roads.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Slow down and use caution while traveling. For the latest road
conditions, call 5 1 1.
&&
$$
Additional graphics for this hazard can be found at
http://www.weather.gov/billings
Torgerson
URGENT - WINTER WEATHER MESSAGE
National Weather Service Great Falls MT
141 PM MST Sat Dec 6 2025
MTZ301-307-070400-
/O.CON.KTFX.WW.Y.0053.000000T0000Z-251207T0400Z/
East Glacier Park Region-Southern Rocky Mountain Front-
Including the following locations: Babb, Rogers Pass, East
Glacier Park, Kiowa, Marias Pass, Saint Mary, and Logan Pass
141 PM MST Sat Dec 6 2025
...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 9 PM MST THIS
EVENING...
* WHAT...Snow. Additional snow accumulations up to 4 inches. Winds
gusting as high as 35 mph.
* WHERE...The Continental Divide along the Rocky Mountain Front.
* WHEN...Until 9 PM MST this evening.
* IMPACTS...Roads, and especially bridges and overpasses, will
likely be slick and hazardous.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Slow down and use caution while traveling. The latest road
conditions can be obtained by calling 5 1 1 or visiting the MDT Road
Report website.
&&
$$
Hoenisch
URGENT - WINTER WEATHER MESSAGE
National Weather Service Great Falls MT
141 PM MST Sat Dec 6 2025
MTZ330-070400-
/O.CAN.KTFX.WS.W.0019.000000T0000Z-251207T0400Z/
/O.EXA.KTFX.WW.Y.0053.000000T0000Z-251207T0400Z/
Gallatin and Madison County Mountains and Centennial Mountains-
Including the following locations: Raynolds Pass, Targhee Pass,
Big Sky, and West Yellowstone
141 PM MST Sat Dec 6 2025
...WINTER WEATHER ADVISORY IN EFFECT UNTIL 9 PM MST THIS EVENING...
...WINTER STORM WARNING IS CANCELLED...
* WHAT...Periods of snow through this evening. Additional snow
accumulations up to two inches.
* WHERE...Gallatin and Madison County Mountains and Centennial
Mountains.
* WHEN...Until 9 PM MST this evening.
* IMPACTS...Plan on slippery road conditions.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Slow down and use caution while traveling. The latest road
conditions can be obtained by calling 5 1 1 or visiting the MDT Road
Report website.
&&
$$
Hazardous Weather Outlook
Hazardous Weather Outlook
National Weather Service Riverton WY
309 AM MST Sat Dec 6 2025
WYZ001>020-022>030-071415-
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-
309 AM MST Sat Dec 6 2025
...WINTER STORM WARNING REMAINS IN EFFECT FOR THE TETON AND GROS
VENTRE MOUNTAINS AND THE SALT RIVER AND WYOMING RANGES UNTIL 2 PM
MST THIS AFTERNOON...
...WINTER WEATHER ADVISORY REMAINS IN EFFECT FOR YELLOWSTONE NATIONAL
PARK, THE ABSAROKA MOUNTAINS, THE UPPER GREEN RIVER BASIN FOOTHILLS,
THE WIND RIVER MOUNTAINS WEST, JACKSON HOLE, AND STAR VALLEY UNTIL 2
PM MST THIS AFTERNOON...
...WINTER STORM WARNING REMAINS IN EFFECT FOR THE BIGHORN MOUNTAINS WEST
UNTIL 5 PM MST THIS AFTERNOON...
This Hazardous Weather Outlook is for Western and Central Wyoming.
.DAY ONE...Today and tonight.
Periods of moderate to heavy snowfall are possible through the late
morning/early afternoon across the Western Mountains, Jackson and
Star Valleys, the Upper Green River Basin, and the western Bighorns.
Gusty winds combined with snow could cause reduced visibilities and
hazardous travel.
Wind gusts of 30 to 50 mph are expected, with isolated gusts above 60
mph possible, much of the day across the western mountains, the Wind
Corridor, and the Wind River Basin.
.DAYS TWO THROUGH SEVEN...Sunday through Friday.
Sunday through Thursday...Multiple chances for snow across western
Wyoming and widespread breezy to gusty winds.
.SPOTTER INFORMATION STATEMENT...
Weather spotters are encouraged to report significant weather
conditions according to Standard Operating Procedures.
$$
