Yellowstone National Park, Wyoming
Regional Weather Alerts
| Alert: | Dense Fog Advisory |
| Area(s): | Central and Southern Valley; Daniels; Sheridan; Western Roosevelt; Northern Valley; Eastern Roosevelt |
| Effective: | 2025-12-25 @ 5:34 pm -> 2025-12-26 @ 9:00 am |
| Onset: | 2025-12-25 @ 5:34 pm -> 2025-12-26 @ 6:00 am |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Glasgow MT on 2025-12-25 @ 5:34 pm |
| Headline: | Dense Fog Advisory issued December 25 at 4:34PM MST until December 26 at 8:00AM MST by NWS Glasgow MT |
| Description: |
* WHAT...Visibility one quarter mile or less in dense fog. * WHERE...Central and Southern Valley, Daniels, Eastern Roosevelt, Northern Valley, Sheridan, and Western Roosevelt Counties. * WHEN...Until 8 AM MST Friday. * IMPACTS...Low visibility could make driving conditions hazardous. |
| Alert: | Dense Fog Advisory |
| Area(s): | Central and Southeast Phillips |
| Effective: | 2025-12-25 @ 5:34 pm -> 2025-12-26 @ 9:00 am |
| Onset: | 2025-12-25 @ 5:34 pm -> 2025-12-26 @ 6:00 am |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Glasgow MT on 2025-12-25 @ 5:34 pm |
| Headline: | Dense Fog Advisory issued December 25 at 4:34PM MST until December 26 at 8:00AM MST by NWS Glasgow MT |
| Description: |
* WHAT...Visibility one quarter mile or less in dense fog. * WHERE...Central and Southeast Phillips County. * WHEN...Until 8 AM MST Friday. * IMPACTS...Low visibility could make driving conditions hazardous. |
| Alert: | Wind Advisory |
| Area(s): | Missoula/Bitterroot Valleys |
| Effective: | 2025-12-25 @ 2:52 pm -> 2025-12-26 @ 6:00 pm |
| Onset: | 2025-12-26 @ 6:00 am -> 2025-12-26 @ 3:00 pm |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Missoula MT on 2025-12-25 @ 2:52 pm |
| Headline: | Wind Advisory issued December 25 at 1:52PM MST until December 26 at 5:00PM MST by NWS Missoula MT |
| Description: |
* WHAT...South winds 20 to 30 mph with gusts up to 45 mph, up to 50 mph in the Bitterroot Valley, expected. * WHERE...Missoula/Bitterroot Valleys. * WHEN...From 5 AM to 5 PM MST Friday. * IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. |
| Alert: | Wind Advisory |
| Area(s): | Potomac/Seeley Lake Region |
| Effective: | 2025-12-25 @ 2:52 pm -> 2025-12-27 @ 1:00 am |
| Onset: | 2025-12-26 @ 9:00 am -> 2025-12-26 @ 3:00 pm |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Missoula MT on 2025-12-25 @ 2:52 pm |
| Headline: | Wind Advisory issued December 25 at 1:52PM MST until December 27 at 12:00AM MST by NWS Missoula MT |
| Description: |
* WHAT...South winds 15 to 25 mph with gusts up to 55 mph expected. * WHERE...Potomac/Seeley Lake Region. * WHEN...From 8 AM Friday to midnight MST Friday Night. * IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. |
| Alert: | Wind Advisory |
| Area(s): | Butte/Blackfoot Region |
| Effective: | 2025-12-25 @ 2:52 pm -> 2025-12-27 @ 6:00 am |
| Onset: | 2025-12-26 @ 7:00 am -> 2025-12-26 @ 3:00 pm |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Missoula MT on 2025-12-25 @ 2:52 pm |
| Headline: | Wind Advisory issued December 25 at 1:52PM MST until December 27 at 5:00AM MST by NWS Missoula MT |
| Description: |
* WHAT...Southwest winds 20 to 30 mph with gusts up to 55 mph expected. * WHERE...Butte/Blackfoot Region. * WHEN...From 6 AM Friday to 5 AM MST Saturday. * IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. |
| Alert: | Winter Weather Advisory |
| Area(s): | Lower Clark Fork Region |
| Effective: | 2025-12-25 @ 2:45 pm -> 2025-12-27 @ 3:00 pm |
| Onset: | 2025-12-26 @ 9:00 am -> 2025-12-26 @ 2:45 pm |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Missoula MT on 2025-12-25 @ 2:45 pm |
| Headline: | Winter Weather Advisory issued December 25 at 1:45PM MST until December 27 at 2:00PM MST by NWS Missoula MT |
| Description: |
...WIDESPREAD WINTER WEATHER AND WIND IMPACTS... .A series of cold fronts will move through the Northern Rockies bringing wind and snow impacts beginning as early as late tonight into Friday morning. Snow squalls are possible in west-central and southwest Montana late Friday night into early Saturday morning. A push of Arctic air will move westward across the Continental Divide on Saturday bringing another uptick and change in direction of winds with much colder temperatures to follow. * WHAT...Snow expected. There is a likelihood of minor to moderate winter weather impacts. Total snow accumulations between 1 and 6 inches with up to 12 inches possible at Lookout Pass. Winds gusting as high as 45 mph. * WHERE...Highway 200 Thompson Falls to Plains, I-90 Lookout Pass to Haugan, Highway 200 Trout Creek to Heron, and Evaro Hill. * WHEN...From 8 AM Friday to 2 PM MST Saturday. * IMPACTS...For MODERATE winter weather impacts, expect disruptions to normal activities. Hazardous traveling conditions. Use extra caution while driving. The hazardous conditions could impact the Friday evening commute, especially over higher passes. Gusty winds could bring down tree branches. * ADDITIONAL DETAILS...It is possible for much colder air to move into the lower valleys on Saturday bringing the potential for rapid freeze up of any wet or slushy surfaces. |
| Alert: | Winter Weather Advisory |
| Area(s): | West Glacier Region |
| Effective: | 2025-12-25 @ 2:45 pm -> 2025-12-27 @ 6:00 pm |
| Onset: | 2025-12-26 @ 9:00 am -> 2025-12-26 @ 2:45 pm |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Missoula MT on 2025-12-25 @ 2:45 pm |
| Headline: | Winter Weather Advisory issued December 25 at 1:45PM MST until December 27 at 5:00PM MST by NWS Missoula MT |
| Description: |
...WIDESPREAD WINTER WEATHER AND WIND IMPACTS... .A series of cold fronts will move through the Northern Rockies bringing wind and snow impacts beginning as early as late tonight into Friday morning. Snow squalls are possible in west-central and southwest Montana late Friday night into early Saturday morning. A push of Arctic air will move westward across the Continental Divide on Saturday bringing another uptick and change in direction of winds with much colder temperatures to follow. * WHAT...Snow expected. There is a likelihood of moderate to isolated major winter weather impacts. Total snow accumulations between 3 and 12 inches. Winds gusting as high as 50 mph. * WHERE...Polebridge, Glacier National Park, Essex, Highway 83 Bigfork to Swan Lake, Marias Pass, and Bad Rock Canyon. * WHEN...From 8 AM Friday to 5 PM MST Saturday. * IMPACTS...For MODERATE winter weather impacts, expect disruptions to normal activities. Hazardous traveling conditions. Use extra caution while driving. Closures and disruptions to infrastructure may occur. For MAJOR winter weather impacts, expect considerable disruptions to normal activities. Dangerous or impossible traveling conditions. Avoid travel in the impacted areas if possible. Widespread closures and disruptions to infrastructure may occur. The hazardous conditions could impact the Friday evening commute, especially over higher passes. Gusty winds could bring down tree branches. * ADDITIONAL DETAILS...An Arctic front will move westward across the Continental Divide on Saturday bringing an uptick in northeast winds in, and near, canyon gaps and downslope foothills. Much colder temperatures with, and behind, this Arctic front. Rapid freeze up of any wet or slushy roads is likely. |
| Alert: | Winter Weather Advisory |
| Area(s): | Kootenai/Cabinet Region |
| Effective: | 2025-12-25 @ 2:45 pm -> 2025-12-27 @ 6:00 pm |
| Onset: | 2025-12-26 @ 1:00 pm -> 2025-12-26 @ 2:45 pm |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Missoula MT on 2025-12-25 @ 2:45 pm |
| Headline: | Winter Weather Advisory issued December 25 at 1:45PM MST until December 27 at 5:00PM MST by NWS Missoula MT |
| Description: |
...WIDESPREAD WINTER WEATHER AND WIND IMPACTS... .A series of cold fronts will move through the Northern Rockies bringing wind and snow impacts beginning as early as late tonight into Friday morning. Snow squalls are possible in west-central and southwest Montana late Friday night into early Saturday morning. A push of Arctic air will move westward across the Continental Divide on Saturday bringing another uptick and change in direction of winds with much colder temperatures to follow. * WHAT...Snow expected. There is a likelihood of minor to moderate winter weather impacts. Total snow accumulations between 1 and 7 inches. Winds gusting as high as 45 mph. * WHERE...Highway 2 Kalispell to Libby, Highway 93 Eureka to Whitefish, Highway 56 Bull Lake Road, and Highway 37 Eureka to Libby. * WHEN...From noon Friday to 5 PM MST Saturday. * IMPACTS...For MODERATE winter weather impacts, expect disruptions to normal activities. Hazardous traveling conditions. Use extra caution while driving. Closures and disruptions to infrastructure may occur. The hazardous conditions could impact the Friday evening commute, especially over higher passes. Gusty winds could bring down tree branches. * ADDITIONAL DETAILS...An Arctic front will move westward across the Continental Divide and into the region on Saturday bringing an uptick in northeast winds. Much colder temperatures with, and behind, this Arctic front. Rapid freeze up of any wet or slushy surfaces is possible. |
| Alert: | Winter Weather Advisory |
| Area(s): | Missoula/Bitterroot Valleys |
| Effective: | 2025-12-25 @ 2:45 pm -> 2025-12-27 @ 6:00 pm |
| Onset: | 2025-12-27 @ 3:00 am -> 2025-12-26 @ 2:45 pm |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Missoula MT on 2025-12-25 @ 2:45 pm |
| Headline: | Winter Weather Advisory issued December 25 at 1:45PM MST until December 27 at 5:00PM MST by NWS Missoula MT |
| Description: |
...WIDESPREAD WINTER WEATHER AND WIND IMPACTS... .A series of cold fronts will move through the Northern Rockies bringing wind and snow impacts beginning as early as late tonight into Friday morning. Snow squalls are possible in west-central and southwest Montana late Friday night into early Saturday morning. A push of Arctic air will move westward across the Continental Divide on Saturday bringing another uptick and change in direction of winds with much colder temperatures to follow. * WHAT...Snow expected. There is a likelihood of minor to moderate winter weather impacts. Total snow accumulations up to 3 inches. Winds gusting as high as 45 mph. * WHERE...Missoula and Bitterroot Valley. * WHEN...From 2 AM to 5 PM MST Saturday. * IMPACTS...For MINOR winter weather impacts, expect a few inconveniences to normal activities. Use caution while driving. Winter traveling conditions. * ADDITIONAL DETAILS...There is the potential for snow bands and or snow squalls to impact the area late Friday night into Saturday morning. Anticipate brief but rapid deterioration in visibility, moderate to heavy snowfall intensity, and strong winds with any banding or squalls. There is the potential for much colder air from the northeast, through the day on Saturday, increasing the risk for rapid freeze up of any wet or slushy surfaces. |
| Alert: | Winter Weather Advisory |
| Area(s): | Potomac/Seeley Lake Region |
| Effective: | 2025-12-25 @ 2:45 pm -> 2025-12-27 @ 9:00 pm |
| Onset: | 2025-12-26 @ 12:00 pm -> 2025-12-26 @ 2:45 pm |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Missoula MT on 2025-12-25 @ 2:45 pm |
| Headline: | Winter Weather Advisory issued December 25 at 1:45PM MST until December 27 at 8:00PM MST by NWS Missoula MT |
| Description: |
...WIDESPREAD WINTER WEATHER AND WIND IMPACTS... .A series of cold fronts will move through the Northern Rockies bringing wind and snow impacts beginning as early as late tonight into Friday morning. Snow squalls are possible in west-central and southwest Montana late Friday night into early Saturday morning. A push of Arctic air will move westward across the Continental Divide on Saturday bringing another uptick and change in direction of winds with much colder temperatures to follow. * WHAT...Snow expected. There is a likelihood of minor to moderate winter weather impacts. Total snow accumulations between 2 and 4 inches. Winds gusting as high as 45 mph. * WHERE...I-90 East Missoula to Bearmouth, Highway 200 Bonner to Greenough, and Highway 83 Seeley Lake to Condon. * WHEN...From 11 AM Friday to 8 PM MST Saturday. * IMPACTS...For MINOR winter weather impacts, expect a few inconveniences to normal activities. Use caution while driving. For MODERATE winter weather impacts, expect disruptions to normal activities. Hazardous traveling conditions. Use extra caution while driving. The hazardous conditions could impact the Friday evening commute, especially over higher passes. * ADDITIONAL DETAILS...There is the potential for snow bands and or snow squalls to impact the area late Friday night into Saturday morning. Anticipate brief but rapid deterioration in visibility, moderate to heavy snowfall intensity, and strong winds with any banding or squalls. Much colder air moves into the region for Saturday. |
| Alert: | Winter Weather Advisory |
| Area(s): | Southern Clearwater Mountains; Bitterroot/Sapphire Mountains |
| Effective: | 2025-12-25 @ 2:45 pm -> 2025-12-27 @ 9:00 pm |
| Onset: | 2025-12-26 @ 6:00 am -> 2025-12-26 @ 2:45 pm |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Missoula MT on 2025-12-25 @ 2:45 pm |
| Headline: | Winter Weather Advisory issued December 25 at 1:45PM MST until December 27 at 8:00PM MST by NWS Missoula MT |
| Description: |
...WIDESPREAD WINTER WEATHER AND WIND IMPACTS... .A series of cold fronts will move through the Northern Rockies bringing wind and snow impacts beginning as early as late tonight into Friday morning. Snow squalls are possible in west-central and southwest Montana late Friday night into early Saturday morning. A push of Arctic air will move westward across the Continental Divide on Saturday bringing another uptick and change in direction of winds with much colder temperatures to follow. * WHAT...Snow expected. There is a likelihood of minor to moderate winter weather impacts. Total snow accumulations between 2 and 12 inches. Winds gusting as high as 50 mph. * WHERE...Lolo Pass, Dixie, Elk City, Highway 93 Sula to Lost Trail Pass, and Highway 12 Lowell to Lolo Pass. * WHEN...From 5 AM MST /4 AM PST/ Friday to 8 PM MST /7 PM PST/ Saturday. * IMPACTS...For MODERATE winter weather impacts, expect disruptions to normal activities. Hazardous traveling conditions. Use extra caution while driving. The hazardous conditions could impact the Friday morning and evening commutes, especially over higher passes. Gusty winds could bring down tree branches. |
| Alert: | Winter Weather Advisory |
| Area(s): | Flathead/Mission Valleys |
| Effective: | 2025-12-25 @ 2:45 pm -> 2025-12-27 @ 9:00 pm |
| Onset: | 2025-12-26 @ 9:00 pm -> 2025-12-26 @ 2:45 pm |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Missoula MT on 2025-12-25 @ 2:45 pm |
| Headline: | Winter Weather Advisory issued December 25 at 1:45PM MST until December 27 at 8:00PM MST by NWS Missoula MT |
| Description: |
...WIDESPREAD WINTER WEATHER AND WIND IMPACTS... .A series of cold fronts will move through the Northern Rockies bringing wind and snow impacts beginning as early as late tonight into Friday morning. Snow squalls are possible in west-central and southwest Montana late Friday night into early Saturday morning. A push of Arctic air will move westward across the Continental Divide on Saturday bringing another uptick and change in direction of winds with much colder temperatures to follow. * WHAT...Snow expected. There is a likelihood of moderate to isolated major winter weather impacts. Total snow accumulations up to 4 inches. Winds gusting as high as 45 mph. * WHERE...Mission Valley, Polson, Flathead Valley, and Flathead Lake. * WHEN...From 8 PM Friday to 8 PM MST Saturday. * IMPACTS...For MODERATE winter weather impacts, expect disruptions to normal activities. Hazardous traveling conditions. Use extra caution while driving. Closures and disruptions to infrastructure may occur. * ADDITIONAL DETAILS...An Arctic front will move westward across the Continental Divide and into the region on Saturday bringing an uptick in northeast winds toward 50 mph possible in and near canyon gaps and downsloping foothills. Much colder temperatures with, and behind, this Arctic front on Saturday. Rapid freeze up of any wet or slushy surfaces is possible. |
| Alert: | Winter Weather Advisory |
| Area(s): | Butte/Blackfoot Region |
| Effective: | 2025-12-25 @ 2:45 pm -> 2025-12-27 @ 9:00 pm |
| Onset: | 2025-12-27 @ 6:00 am -> 2025-12-26 @ 2:45 pm |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Missoula MT on 2025-12-25 @ 2:45 pm |
| Headline: | Winter Weather Advisory issued December 25 at 1:45PM MST until December 27 at 8:00PM MST by NWS Missoula MT |
| Description: |
...WIDESPREAD WINTER WEATHER AND WIND IMPACTS... .A series of cold fronts will move through the Northern Rockies bringing wind and snow impacts beginning as early as late tonight into Friday morning. Snow squalls are possible in west-central and southwest Montana late Friday night into early Saturday morning. A push of Arctic air will move westward across the Continental Divide on Saturday bringing another uptick and change in direction of winds with much colder temperatures to follow. * WHAT...Snow expected. There is a chance of minor winter weather impacts. Total snow accumulations up to 3 inches. Winds gusting as high as 45 mph. * WHERE...Homestake Pass, Butte, Highway 12 Garrison to Elliston, MacDonald Pass, and Georgetown Lake. * WHEN...From 5 AM to 8 PM MST Saturday. * IMPACTS...For MINOR winter weather impacts, expect a few inconveniences to normal activities. Use caution while driving. Winter traveling conditions. * ADDITIONAL DETAILS...There is the potential for snow bands and or snow squalls to impact the area late Friday night into Saturday morning. Anticipate brief but rapid deterioration in visibility, moderate to heavy snowfall intensity, and strong winds with any banding or squalls. Much colder air from the northeast, through the day on Saturday, increasing the risk for rapid freeze up of any wet or slushy surfaces. |
| Alert: | Winter Weather Advisory |
| Area(s): | Gallatin and Madison County Mountains and Centennial Mountains |
| Effective: | 2025-12-25 @ 2:18 pm -> 2025-12-26 @ 7:00 pm |
| Onset: | 2025-12-26 @ 3:00 am -> 2025-12-26 @ 7:00 am |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Great Falls MT on 2025-12-25 @ 2:18 pm |
| Headline: | Winter Weather Advisory issued December 25 at 1:18PM MST until December 26 at 6:00PM MST by NWS Great Falls MT |
| Description: |
* WHAT...Snow expected. Total snow accumulations up to 6 inches near pass level. Winds gusting as high as 55 mph. * WHERE...Southern end of the Gallatin and Madison County Mountains and Centennial Mountains. * WHEN...From 2 AM to 6 PM MST Friday. * IMPACTS...Plan on slippery road conditions. Strong winds could cause tree damage. * ADDITIONAL DETAILS...Little to no snow is forecast around Big Sky and points northward over this timeframe. |
| Alert: | Winter Weather Advisory |
| Area(s): | East Glacier Park Region; Southern Rocky Mountain Front |
| Effective: | 2025-12-25 @ 2:18 pm -> 2025-12-27 @ 3:00 pm |
| Onset: | 2025-12-26 @ 9:00 am -> 2025-12-26 @ 7:00 am |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Great Falls MT on 2025-12-25 @ 2:18 pm |
| Headline: | Winter Weather Advisory issued December 25 at 1:18PM MST until December 27 at 2:00PM MST by NWS Great Falls MT |
| Description: |
* WHAT...Snow expected. Total snow accumulations between 3 and 8 inches near pass level with higher amounts above pass level. Winds gusting as high as 50 mph. * WHERE...The Continental Divide along the Rocky Mountain Front. * WHEN...From 8 AM Friday to 2 PM MST Saturday. * IMPACTS...Travel could be very difficult and tire chains may be required for some vehicles. Those in the backcountry should ensure they are prepared for dangerous conditions. Gusty winds could bring down tree branches. * ADDITIONAL DETAILS...Marias Pass is most favored for amounts closer to 8 inches, while Rogers Pass is favored to be closer to 3 inches over this timeframe. |
| Alert: | High Wind Warning |
| Area(s): | Madison River Valley |
| Effective: | 2025-12-25 @ 2:10 pm -> 2025-12-26 @ 7:00 pm |
| Onset: | 2025-12-26 @ 11:00 am -> 2025-12-26 @ 7:00 am |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Great Falls MT on 2025-12-25 @ 2:10 pm |
| Headline: | High Wind Warning issued December 25 at 1:10PM MST until December 26 at 6:00PM MST by NWS Great Falls MT |
| Description: |
* WHAT...South to southwest winds 30 to 40 mph with gusts up to 60 mph expected. * WHERE...Madison River Valley. * WHEN...From 10 AM to 6 PM MST Friday. * IMPACTS...High winds may move loose debris, damage property and cause power outages. Travel could be difficult, especially for high profile vehicles. |