Yellowstone National Park, Wyoming
Regional Weather Alerts
| Alert: | Winter Weather Advisory |
| Area(s): | East Glacier Park Region; Southern Rocky Mountain Front |
| Effective: | 2025-12-01 @ 3:00 am -> 2025-12-03 @ 12:00 am |
| Onset: | 2025-12-01 @ 6:00 pm -> 2025-12-01 @ 6:00 pm |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Great Falls MT on 2025-12-01 @ 3:00 am |
| Headline: | Winter Weather Advisory issued December 1 at 2:00AM MST until December 2 at 11:00PM MST by NWS Great Falls MT |
| Description: |
* WHAT...Snow expected. Total snow accumulations between 2 and 5 inches. Winds gusting as high as 45 mph. * WHERE...The Continental Divide along the Rocky Mountain Front. * WHEN...From 5 PM this afternoon to 11 PM MST Tuesday. * IMPACTS...Plan on slippery road conditions. Localized blowing snow could significantly reduce visibility. Very strong winds could cause extensive tree damage. |
| Alert: | Winter Weather Advisory |
| Area(s): | Little Belt and Highwood Mountains; Snowy and Judith Mountains; Big Belt, Bridger and Castle Mountains; Gallatin and Madison County Mountains and Centennial Mountains |
| Effective: | 2025-12-01 @ 3:00 am -> 2025-12-03 @ 6:00 am |
| Onset: | 2025-12-02 @ 12:00 am -> 2025-12-01 @ 6:00 pm |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Great Falls MT on 2025-12-01 @ 3:00 am |
| Headline: | Winter Weather Advisory issued December 1 at 2:00AM MST until December 3 at 5:00AM MST by NWS Great Falls MT |
| Description: |
* WHAT...Snow expected. Total snow accumulations will range from 2 to 4 inches across the lower elevations to 5 to 10 inches over the passes and higher terrain. Winds gusting as high as 40 mph. * WHERE...The Highwood, Little Belt, Judith, and Snowy Mountains, Big Belt, Bridger and Castle Mountains, and Gallatin and Madison County Mountains and Centennial Mountains. * WHEN...From 11 PM this evening to 5 AM MST Wednesday. * IMPACTS...Travel could be very difficult. |
| Alert: | Winter Weather Advisory |
| Area(s): | Cascade County below 5000ft; Judith Basin County and Judith Gap; Fergus County below 4500ft; Upper Blackfoot and MacDonald Pass; Gates of the Mountains; Helena Valley |
| Effective: | 2025-12-01 @ 3:00 am -> 2025-12-03 @ 6:00 am |
| Onset: | 2025-12-02 @ 6:00 am -> 2025-12-01 @ 6:00 pm |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Great Falls MT on 2025-12-01 @ 3:00 am |
| Headline: | Winter Weather Advisory issued December 1 at 2:00AM MST until December 3 at 5:00AM MST by NWS Great Falls MT |
| Description: |
* WHAT...Snow expected. Total snow accumulations up to 4 inches. Winds gusting as high as 35 mph. * WHERE...Portions of central and north central Montana. * WHEN...From 5 AM Tuesday to 5 AM MST Wednesday. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the Tuesday morning and evening commutes. |
| Alert: | Cold Weather Advisory |
| Area(s): | Hill County; Northern Blaine County |
| Effective: | 2025-12-01 @ 2:53 am -> 2025-12-01 @ 11:00 am |
| Onset: | 2025-12-01 @ 2:53 am -> 2025-12-01 @ 11:00 am |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Great Falls MT on 2025-12-01 @ 2:53 am |
| Headline: | Cold Weather Advisory issued December 1 at 1:53AM MST until December 1 at 10:00AM MST by NWS Great Falls MT |
| Description: |
* WHAT...Very cold wind chills as low as 25 below to 30 below zero overnight. * WHERE...Hill County and Northern Blaine County. * WHEN...Until 10 AM MST this morning. * IMPACTS...The dangerously cold wind chills as low as 30 below zero could cause frostbite on exposed skin in as little as 10 minutes. |
| Alert: | Winter Weather Advisory |
| Area(s): | Flathead/Mission Valleys |
| Effective: | 2025-12-01 @ 2:18 am -> 2025-12-02 @ 1:00 pm |
| Onset: | 2025-12-01 @ 3:00 pm -> 2025-12-02 @ 2:30 am |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Missoula MT on 2025-12-01 @ 2:18 am |
| Headline: | Winter Weather Advisory issued December 1 at 1:18AM MST until December 2 at 12:00PM MST by NWS Missoula MT |
| Description: |
* WHAT...Snow expected. There is a likelihood of minor to moderate winter weather impacts. Total snow accumulations between 2 and 5 inches, except 5 to 8 inches Bigfork to Many Lakes Region. Daytime melting combined with sub-freezing temperatures expected after dark will create a potential for black ice. Conditions will become slicker Monday night. * WHERE...Flathead Valley, Polson, Mission Valley, and Flathead Lake. * WHEN...From 2 PM this afternoon to noon MST Tuesday. * 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 Monday evening and Tuesday morning commutes, especially over higher passes. |
| Alert: | Winter Weather Advisory |
| Area(s): | Kootenai/Cabinet Region |
| Effective: | 2025-12-01 @ 2:18 am -> 2025-12-02 @ 1:00 pm |
| Onset: | 2025-12-01 @ 2:00 pm -> 2025-12-02 @ 2:30 am |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Missoula MT on 2025-12-01 @ 2:18 am |
| Headline: | Winter Weather Advisory issued December 1 at 1:18AM MST until December 2 at 12:00PM MST by NWS Missoula MT |
| Description: |
* WHAT...Snow expected. There is a likelihood of minor to moderate winter weather impacts. Total snow accumulations between 2 and 5 inches. Daytime melting combined with sub-freezing temperatures expected after dark will create a potential for black ice. Conditions will become slicker Monday night. * WHERE...Highway 93 Eureka to Whitefish, Highway 37 Eureka to Libby, Highway 56 Bull Lake Road, and Highway 2 Kalispell to Libby. * WHEN...From 1 PM this afternoon to noon MST Tuesday. * IMPACTS...For MINOR winter weather impacts, expect a few inconveniences to normal activities. For MODERATE winter weather impacts, expect disruptions to normal activities. Use caution while driving. Winter traveling conditions. The hazardous conditions could impact the Monday evening and Tuesday morning commutes. |
| Alert: | Winter Weather Advisory |
| Area(s): | Lower Clark Fork Region |
| Effective: | 2025-12-01 @ 2:18 am -> 2025-12-02 @ 1:00 pm |
| Onset: | 2025-12-01 @ 3:00 pm -> 2025-12-02 @ 2:30 am |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Missoula MT on 2025-12-01 @ 2:18 am |
| Headline: | Winter Weather Advisory issued December 1 at 1:18AM MST until December 2 at 12:00PM MST by NWS Missoula MT |
| Description: |
* WHAT...Snow expected. There is a likelihood of minor to moderate winter weather impacts. Total snow accumulations between 2 and 5 inches. Daytime melting combined with sub-freezing temperatures expected after dark will create a potential for black ice. Conditions will become slicker Monday night. * WHERE...I-90 Lookout Pass to Haugan, Highway 200 Trout Creek to Heron, Highway 200 Thompson Falls to Plains, and Evaro Hill. * WHEN...From 2 PM this afternoon to noon MST Tuesday. * IMPACTS...For MINOR winter weather impacts, expect a few inconveniences to normal activities. For MODERATE winter weather impacts, expect disruptions to normal activities. Use caution while driving. Winter traveling conditions. The hazardous conditions could impact the Monday evening and Tuesday morning commutes, especially over higher passes. |
| Alert: | Winter Weather Advisory |
| Area(s): | Missoula/Bitterroot Valleys |
| Effective: | 2025-12-01 @ 2:18 am -> 2025-12-02 @ 3:00 pm |
| Onset: | 2025-12-01 @ 9:00 pm -> 2025-12-02 @ 2:30 am |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Missoula MT on 2025-12-01 @ 2:18 am |
| Headline: | Winter Weather Advisory issued December 1 at 1:18AM MST until December 2 at 2:00PM MST by NWS Missoula MT |
| Description: |
* WHAT...Snow expected. There is a chance of minor winter weather impacts. Total snow accumulations 1 to 4 inches. Daytime melting combined with sub-freezing temperatures expected after dark will create a potential for black ice. The Tuesday morning commute could be impacted with slick snow covered roads. * WHERE...Bitterroot Valley and Missoula. * WHEN...From 8 PM this evening to 2 PM MST Tuesday. * IMPACTS...For MINOR winter weather impacts, expect a few inconveniences to normal activities. Use caution while driving. Winter traveling conditions. The hazardous conditions could impact the Tuesday morning commute, especially over higher passes. |
| Alert: | Winter Weather Advisory |
| Area(s): | West Glacier Region; Potomac/Seeley Lake Region |
| Effective: | 2025-12-01 @ 2:18 am -> 2025-12-02 @ 6:00 pm |
| Onset: | 2025-12-01 @ 3:00 pm -> 2025-12-02 @ 2:30 am |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Missoula MT on 2025-12-01 @ 2:18 am |
| Headline: | Winter Weather Advisory issued December 1 at 1:18AM MST until December 2 at 5:00PM MST by NWS Missoula MT |
| Description: |
* WHAT...Snow expected. There is a likelihood of minor to moderate winter weather impacts. Total snow accumulations between 3 and 7 inches, except up to 10 inches in the Seeley-Swan Valley. Daytime melting combined with sub-freezing temperatures expected after dark will create a potential for black ice. Conditions will become slicker Monday night. * WHERE...Glacier National Park, Bad Rock Canyon, Marias Pass, Highway 200 Bonner to Greenough, I-90 East Missoula to Bearmouth, Essex, Polebridge, Highway 83 Bigfork to Swan Lake, and Highway 83 Seeley Lake to Condon. * WHEN...From 2 PM this afternoon to 5 PM MST Tuesday. * 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 Monday evening and Tuesday morning commutes, especially over higher passes. * ADDITIONAL DETAILS...Between 10 and 16 inches of total snow accumulation is possible in the Mission and Swan Ranges, while the Whitefish and Lewis Ranges could receive 5 to 10 inches. |
| Alert: | Winter Weather Advisory |
| Area(s): | Bitterroot/Sapphire Mountains |
| Effective: | 2025-12-01 @ 2:18 am -> 2025-12-02 @ 6:00 pm |
| Onset: | 2025-12-01 @ 9:00 pm -> 2025-12-02 @ 2:30 am |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Missoula MT on 2025-12-01 @ 2:18 am |
| Headline: | Winter Weather Advisory issued December 1 at 1:18AM MST until December 2 at 5:00PM MST by NWS Missoula MT |
| Description: |
* WHAT...Snow expected. There is a likelihood of minor to moderate winter weather impacts. Total snow accumulations 4 to 7 inches. * WHERE...Lolo Pass and Highway 93 Sula to Lost Trail Pass. * WHEN...From 8 PM this evening to 5 PM MST Tuesday. * IMPACTS...For MINOR winter weather impacts, expect a few inconveniences to normal activities. Use caution while driving. Winter traveling conditions. The hazardous conditions could impact the Tuesday morning and evening commutes, especially over higher passes. |
| Alert: | Cold Weather Advisory |
| Area(s): | Central and Southeast Phillips; Central and Southern Valley; Daniels; Sheridan; Western Roosevelt; Northern Phillips; Northern Valley; Eastern Roosevelt |
| Effective: | 2025-11-30 @ 11:30 am -> 2025-12-01 @ 11:00 am |
| Onset: | 2025-11-30 @ 11:30 am -> 2025-12-01 @ 11:00 am |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Glasgow MT on 2025-11-30 @ 11:30 am |
| Headline: | Cold Weather Advisory issued November 30 at 10:30AM MST until December 1 at 10:00AM MST by NWS Glasgow MT |
| Description: |
* WHAT...Very cold wind chills as low as 30 below. * WHERE...Phillips, Valley, Daniels, Roosevelt and Sheridan Counties. * WHEN...Until 10 AM MST Monday. * IMPACTS...The dangerously cold wind chills as low as 30 below zero could cause frostbite on exposed skin in as little as 30 minutes. Very cold temperatures can lead to hypothermia with prolonged exposure. |