Yellowstone National Park, Wyoming
Regional Weather Alerts
| Alert: | Special Weather Statement |
| Area(s): | Hill County; Northern Blaine County; Bears Paw Mountains and Southern Blaine; Judith Basin County and Judith Gap; Fergus County below 4500ft; Snowy and Judith Mountains; Meagher County Valleys; Canyon Ferry Area; Missouri Headwaters; Madison River Valley; Gallatin Valley; Beaverhead and Western Madison below 6000ft; Ruby Mountains and Southern Beaverhead Mountains |
| Effective: | 2025-12-27 @ 6:41 am |
| Onset: | 2025-12-27 @ 6:41 am -> 2025-12-27 @ 8:00 am |
| Severity: | Moderate |
| Certainty: | Observed |
| Urgency: | Expected |
| Issued By: | NWS Great Falls MT on 2025-12-27 @ 6:41 am |
| Headline: | Special Weather Statement issued December 27 at 5:41AM MST by NWS Great Falls MT |
| Description: |
A Pacific cold front was moving east early this morning, with a band of moderate to at times heavy snow accompany the front. While snowfall accumulations are likely to remain below one inch through sunrise this morning a period of reduced visibility, with visibilities falling to as low as one mile, is likely to occur. In addition to the reduced visibility a period of strong and gusty winds of between 45 to 55 mph will occur. Travelers should be prepared for changing conditions and allow extra time to reach your destination. |
| Alert: | Cold Weather Advisory |
| Area(s): | Central and Southeast Phillips; Central and Southern Valley; Daniels; Sheridan; Western Roosevelt; Petroleum; Garfield; McCone; Richland; Dawson; Prairie; Wibaux; Northern Phillips; Southwest Phillips; Northern Valley; Eastern Roosevelt |
| Effective: | 2025-12-27 @ 3:24 am -> 2025-12-28 @ 12:00 pm |
| Onset: | 2025-12-27 @ 12:00 pm -> 2025-12-27 @ 4:00 pm |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Glasgow MT on 2025-12-27 @ 3:24 am |
| Headline: | Cold Weather Advisory issued December 27 at 2:24AM MST until December 28 at 11:00AM MST by NWS Glasgow MT |
| Description: |
* WHAT...Very cold wind chills as low as 37 below expected. * WHERE...A portion of northeast Montana. * WHEN...From 11 AM this morning to 11 AM MST Sunday. * IMPACTS...The dangerously cold wind chills as low as 35 below zero could cause frostbite on exposed skin in as little as 10 minutes. |
| Alert: | Winter Weather Advisory |
| Area(s): | Red Lodge Foothills; Beartooth Foothills |
| Effective: | 2025-12-27 @ 2:03 am -> 2025-12-28 @ 12:00 am |
| Onset: | 2025-12-27 @ 9:00 am -> 2025-12-28 @ 12:00 am |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Billings MT on 2025-12-27 @ 2:03 am |
| Headline: | Winter Weather Advisory issued December 27 at 1:03AM MST until December 27 at 11:00PM MST by NWS Billings MT |
| Description: |
* WHAT...Snow expected. Total snow accumulations of 1 to 3 inches. Winds gusting as high as 40 mph. * WHERE...Beartooth Foothills and Red Lodge Foothills. * WHEN...From 8 AM this morning to 11 PM MST this evening. * IMPACTS...Roads may become slick and visibility may be reduced in falling and blowing snow. * ADDITIONAL DETAILS...Temperatures are expected to fall during the afternoon behind a strong cold front. Wet roads from melting snow may freeze and become hazardous late today into the evening. This includes US-212, US-310 and Highway 78. |
| Alert: | Winter Weather Advisory |
| Area(s): | Southern Big Horn; Bighorn Canyon; Sheridan Foothills |
| Effective: | 2025-12-27 @ 2:03 am -> 2025-12-28 @ 12:00 am |
| Onset: | 2025-12-27 @ 12:00 pm -> 2025-12-28 @ 12:00 am |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Billings MT on 2025-12-27 @ 2:03 am |
| Headline: | Winter Weather Advisory issued December 27 at 1:03AM MST until December 27 at 11:00PM MST by NWS Billings MT |
| Description: |
* WHAT...Snow and slick roads expected. Total snow accumulations up to two inches. Winds gusting as high as 35 mph. * WHERE...In Montana, Bighorn Canyon and Southern Big Horn. In Wyoming, Sheridan Foothills. * WHEN...From 11 AM this morning to 11 PM MST this evening. * IMPACTS...Roads, and especially bridges and overpasses, may become slick and hazardous. * ADDITIONAL DETAILS...Temperatures are expected to fall during the afternoon behind a strong cold front. Wet roads from melting snow may freeze and become hazardous late today into the evening. This includes I-90 through Sheridan. |
| Alert: | Cold Weather Advisory |
| Area(s): | Fallon |
| Effective: | 2025-12-27 @ 1:51 am -> 2025-12-28 @ 12:00 pm |
| Onset: | 2025-12-28 @ 12:00 am -> 2025-12-28 @ 2:00 am |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Billings MT on 2025-12-27 @ 1:51 am |
| Headline: | Cold Weather Advisory issued December 27 at 12:51AM MST until December 28 at 11:00AM MST by NWS Billings MT |
| Description: |
* WHAT...Very cold wind chills as low 20 to 30 below expected. * WHERE...Fallon. * WHEN...From 11 PM this evening to 11 AM MST Sunday. * IMPACTS...Wind chill values can lead to hypothermia with prolonged exposure. |
| Alert: | Winter Weather Advisory |
| Area(s): | East Glacier Park Region; Southern Rocky Mountain Front |
| Effective: | 2025-12-27 @ 1:45 am -> 2025-12-27 @ 3:00 pm |
| Onset: | 2025-12-27 @ 1:45 am -> 2025-12-27 @ 3:00 pm |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Great Falls MT on 2025-12-27 @ 1:45 am |
| Headline: | Winter Weather Advisory issued December 27 at 12:45AM MST until December 27 at 2:00PM MST by NWS Great Falls MT |
| Description: |
* WHAT...Snow. Additional snow accumulations between 2 and 6 inches, with higher amounts above 6000 feet. Winds gusting as high as 40 mph. * WHERE...The Continental Divide along the Rocky Mountain Front. * WHEN...Until 2 PM MST this afternoon. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. * ADDITIONAL DETAILS...Brief periods of intense snowfall, with snowfall rates of one half of an inch per hour or higher, is possible through 6 AM Saturday. |
| Alert: | Winter Weather Advisory |
| Area(s): | Northwest Beaverhead County; Gallatin and Madison County Mountains and Centennial Mountains |
| Effective: | 2025-12-27 @ 1:45 am -> 2025-12-27 @ 3:00 pm |
| Onset: | 2025-12-27 @ 1:45 am -> 2025-12-27 @ 3:00 pm |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Great Falls MT on 2025-12-27 @ 1:45 am |
| Headline: | Winter Weather Advisory issued December 27 at 12:45AM MST until December 27 at 2:00PM MST by NWS Great Falls MT |
| Description: |
* WHAT...Snow. Additional snow accumulations between 1 and 3 inches. Winds gusting as high as 50 mph. * WHERE...Gallatin and Madison County Mountains and Centennial Mountains and Northwest Beaverhead County. * WHEN...Until 2 PM MST this afternoon. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. |
| Alert: | Winter Weather Advisory |
| Area(s): | Upper Blackfoot and MacDonald Pass; Little Belt and Highwood Mountains; Big Belt, Bridger and Castle Mountains |
| Effective: | 2025-12-27 @ 1:45 am -> 2025-12-27 @ 3:00 pm |
| Onset: | 2025-12-27 @ 1:45 am -> 2025-12-27 @ 3:00 pm |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Great Falls MT on 2025-12-27 @ 1:45 am |
| Headline: | Winter Weather Advisory issued December 27 at 12:45AM MST until December 27 at 2:00PM MST by NWS Great Falls MT |
| Description: |
* WHAT...Snow. Additional snow accumulations up to 3 inches. Winds gusting as high as 45 mph. * WHERE...Big Belt, Bridger and Castle Mountains, Little Belt and Highwood Mountains, and Upper Blackfoot and MacDonald Pass. * WHEN...Until 2 PM MST this afternoon. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. |
| Alert: | Cold Weather Advisory |
| Area(s): | Southern Rocky Mountain Front; Southern High Plains; Eastern Pondera and Eastern Teton; Western and Central Chouteau County; Cascade County below 5000ft; Judith Basin County and Judith Gap; Little Belt and Highwood Mountains |
| Effective: | 2025-12-27 @ 1:40 am -> 2025-12-27 @ 11:00 pm |
| Onset: | 2025-12-27 @ 11:00 am -> 2025-12-27 @ 6:00 pm |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Great Falls MT on 2025-12-27 @ 1:40 am |
| Headline: | Cold Weather Advisory issued December 27 at 12:40AM MST until December 27 at 10:00PM MST by NWS Great Falls MT |
| Description: |
* WHAT...Very cold wind chills as low as 30 below expected. * WHERE...Southern Rocky Mountain Front and adjacent foothills and plains, Cascade County, including the Little Belt and Highwood Mountains, Eastern Pondera and Eastern Teton Counties, Western and Central Chouteau County, and Judith Basin County and Judith Gap. * WHEN...From 10 AM this morning to 10 PM MST this evening. * IMPACTS...The dangerously cold wind chills as low as 30 below zero could cause frostbite on exposed skin in as little as 30 minutes. |
| Alert: | Extreme Cold Warning |
| Area(s): | Eastern Glacier, Western Toole, and Central Pondera; Eastern Toole and Liberty |
| Effective: | 2025-12-27 @ 1:40 am -> 2025-12-28 @ 6:00 am |
| Onset: | 2025-12-27 @ 7:00 am -> 2025-12-27 @ 6:00 pm |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Great Falls MT on 2025-12-27 @ 1:40 am |
| Headline: | Extreme Cold Warning issued December 27 at 12:40AM MST until December 28 at 5:00AM MST by NWS Great Falls MT |
| Description: |
* WHAT...Dangerously cold wind chills as low as 35 below expected. * WHERE...Eastern Glacier, Western Toole, and Central Pondera Counties, and Eastern Toole and Liberty Counties. * WHEN...From 6 AM this morning to 5 AM MST Sunday. * IMPACTS...The dangerously cold wind chills as low as 35 below zero could cause frostbite on exposed skin in as little as 10 minutes. |
| Alert: | Cold Weather Advisory |
| Area(s): | East Glacier Park Region; Northern High Plains |
| Effective: | 2025-12-27 @ 1:40 am -> 2025-12-28 @ 6:00 am |
| Onset: | 2025-12-27 @ 7:00 am -> 2025-12-27 @ 6:00 pm |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Great Falls MT on 2025-12-27 @ 1:40 am |
| Headline: | Cold Weather Advisory issued December 27 at 12:40AM MST until December 28 at 5:00AM MST by NWS Great Falls MT |
| Description: |
* WHAT...Very cold wind chills as low as 30 below expected. * WHERE...Eastern Glacier National Park and adjacent foothills and plains. * WHEN...From 6 AM this morning to 5 AM MST Sunday. * IMPACTS...The dangerously cold wind chills as low as 30 below zero could cause frostbite on exposed skin in as little as 30 minutes. |
| Alert: | Extreme Cold Warning |
| Area(s): | Hill County; Northern Blaine County; Bears Paw Mountains and Southern Blaine |
| Effective: | 2025-12-27 @ 1:40 am -> 2025-12-28 @ 12:00 pm |
| Onset: | 2025-12-27 @ 11:00 am -> 2025-12-27 @ 6:00 pm |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Great Falls MT on 2025-12-27 @ 1:40 am |
| Headline: | Extreme Cold Warning issued December 27 at 12:40AM MST until December 28 at 11:00AM MST by NWS Great Falls MT |
| Description: |
* WHAT...Dangerously cold wind chills as low as 40 below expected. * WHERE...Bears Paw Mountains and Southern Blaine, Hill County, and Northern Blaine County. * WHEN...From 10 AM this morning to 11 AM MST Sunday. * IMPACTS...The dangerously cold wind chills as low as 40 below zero could cause frostbite on exposed skin in as little as 10 minutes. |
| Alert: | Cold Weather Advisory |
| Area(s): | Fergus County below 4500ft; Snowy and Judith Mountains |
| Effective: | 2025-12-27 @ 1:40 am -> 2025-12-28 @ 12:00 pm |
| Onset: | 2025-12-27 @ 11:00 am -> 2025-12-27 @ 6:00 pm |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Great Falls MT on 2025-12-27 @ 1:40 am |
| Headline: | Cold Weather Advisory issued December 27 at 12:40AM MST until December 28 at 11:00AM MST by NWS Great Falls MT |
| Description: |
* WHAT...Very cold wind chills as low as 30 below expected. * WHERE...Snowy and Judith Mountains and Fergus County below 4500ft. * WHEN...From 10 AM this morning to 11 AM MST Sunday. * IMPACTS...The dangerously cold wind chills as low as 30 below zero could cause frostbite on exposed skin in as little as 30 minutes. |
| Alert: | Winter Weather Advisory |
| Area(s): | Kootenai/Cabinet Region |
| Effective: | 2025-12-26 @ 12:40 pm -> 2025-12-27 @ 6:00 pm |
| Onset: | 2025-12-26 @ 1:00 pm -> 2025-12-27 @ 12:45 pm |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Missoula MT on 2025-12-26 @ 12:40 pm |
| Headline: | Winter Weather Advisory issued December 26 at 11:40AM MST until December 27 at 5:00PM MST by NWS Missoula MT |
| Description: |
...WIDESPREAD WINTER WEATHER AND WIND IMPACTS [UPDATE]... .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 western Montana late Friday night into early Saturday morning with the arrival of a strong cold front. 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 1 and 7 inches. Winds gusting as high as 45 mph. * WHERE...Highway 37 Eureka to Libby, Highway 2 Kalispell to Libby, Highway 56 Bull Lake Road, and Highway 93 Eureka to Whitefish. * WHEN...Until 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...Heavy snow bands and or snow squalls are possible late Friday night into Saturday morning with the arrival of a strong cold front. 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): | Flathead/Mission Valleys |
| Effective: | 2025-12-26 @ 12:40 pm -> 2025-12-27 @ 9:00 pm |
| Onset: | 2025-12-26 @ 12:40 pm -> 2025-12-27 @ 12:45 pm |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Missoula MT on 2025-12-26 @ 12:40 pm |
| Headline: | Winter Weather Advisory issued December 26 at 11:40AM MST until December 27 at 8:00PM MST by NWS Missoula MT |
| Description: |
...WIDESPREAD WINTER WEATHER AND WIND IMPACTS [UPDATE]... .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 western Montana late Friday night into early Saturday morning with the arrival of a strong cold front. 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...Flathead Lake, Polson, Mission Valley, and Flathead Valley. * WHEN...Until 8 PM MST Saturday. * 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 Friday evening commute, especially over higher passes. * ADDITIONAL DETAILS...Rain has changed over to snow earlier than expected in the Flathead Valley beginning winter weather impacts. Heavy snow bands and or snow squalls are possible late Friday night into Saturday morning with the arrival of a strong cold front. 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: | 2025-12-26 @ 12:40 pm -> 2025-12-27 @ 9:00 pm |
| Onset: | 2025-12-27 @ 6:00 am -> 2025-12-27 @ 12:45 pm |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Missoula MT on 2025-12-26 @ 12:40 pm |
| Headline: | Winter Weather Advisory issued December 26 at 11:40AM MST until December 27 at 8:00PM MST by NWS Missoula MT |
| Description: |
...WIDESPREAD WINTER WEATHER AND WIND IMPACTS [UPDATE]... .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 western Montana late Friday night into early Saturday morning with the arrival of a strong cold front. 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...MacDonald Pass, Georgetown Lake, Highway 12 Garrison to Elliston, Homestake Pass, and Butte. * 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): | Southern Clearwater Mountains; Bitterroot/Sapphire Mountains |
| Effective: | 2025-12-26 @ 12:40 pm -> 2025-12-27 @ 9:00 pm |
| Onset: | 2025-12-26 @ 12:40 pm -> 2025-12-27 @ 12:45 pm |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Missoula MT on 2025-12-26 @ 12:40 pm |
| Headline: | Winter Weather Advisory issued December 26 at 11:40AM MST until December 27 at 8:00PM MST by NWS Missoula MT |
| Description: |
...WIDESPREAD WINTER WEATHER AND WIND IMPACTS [UPDATE]... .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 western Montana late Friday night into early Saturday morning with the arrival of a strong cold front. 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...Elk City, Lolo Pass, Highway 93 Sula to Lost Trail Pass, Highway 12 Lowell to Lolo Pass, and Dixie. * WHEN...Until 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. * ADDITIONAL DETAILS...Heavy snow bands and or snow squalls are possible late Friday night into Saturday morning with the arrival of a strong cold front. |
| Alert: | Winter Weather Advisory |
| Area(s): | Potomac/Seeley Lake Region |
| Effective: | 2025-12-26 @ 12:40 pm -> 2025-12-27 @ 9:00 pm |
| Onset: | 2025-12-26 @ 12:40 pm -> 2025-12-27 @ 12:45 pm |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Missoula MT on 2025-12-26 @ 12:40 pm |
| Headline: | Winter Weather Advisory issued December 26 at 11:40AM MST until December 27 at 8:00PM MST by NWS Missoula MT |
| Description: |
...WIDESPREAD WINTER WEATHER AND WIND IMPACTS [UPDATE]... .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 western Montana late Friday night into early Saturday morning with the arrival of a strong cold front. 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...Highway 83 Seeley Lake to Condon, I-90 East Missoula to Bearmouth, and Highway 200 Bonner to Greenough. * WHEN...Until 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): | West Glacier Region |
| Effective: | 2025-12-26 @ 12:40 pm -> 2025-12-27 @ 6:00 pm |
| Onset: | 2025-12-26 @ 12:40 pm -> 2025-12-27 @ 12:45 pm |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Missoula MT on 2025-12-26 @ 12:40 pm |
| Headline: | Winter Weather Advisory issued December 26 at 11:40AM MST until December 27 at 5:00PM MST by NWS Missoula MT |
| Description: |
...WIDESPREAD WINTER WEATHER AND WIND IMPACTS [UPDATE]... .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 western Montana late Friday night into early Saturday morning with the arrival of a strong cold front. 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...Glacier National Park, Marias Pass, Bad Rock Canyon, Essex, Highway 83 Bigfork to Swan Lake, and Polebridge. * WHEN...Until 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...Heavy snow bands and or snow squalls are possible late Friday night into Saturday morning with the arrival of a strong cold front. 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): | Missoula/Bitterroot Valleys |
| Effective: | 2025-12-26 @ 12:40 pm -> 2025-12-27 @ 6:00 pm |
| Onset: | 2025-12-27 @ 3:00 am -> 2025-12-27 @ 12:45 pm |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Missoula MT on 2025-12-26 @ 12:40 pm |
| Headline: | Winter Weather Advisory issued December 26 at 11:40AM MST until December 27 at 5:00PM MST by NWS Missoula MT |
| Description: |
...WIDESPREAD WINTER WEATHER AND WIND IMPACTS [UPDATE]... .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 western Montana late Friday night into early Saturday morning with the arrival of a strong cold front. 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): | Lower Clark Fork Region |
| Effective: | 2025-12-26 @ 12:40 pm -> 2025-12-27 @ 3:00 pm |
| Onset: | 2025-12-26 @ 12:40 pm -> 2025-12-27 @ 12:45 pm |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Missoula MT on 2025-12-26 @ 12:40 pm |
| Headline: | Winter Weather Advisory issued December 26 at 11:40AM MST until December 27 at 2:00PM MST by NWS Missoula MT |
| Description: |
...WIDESPREAD WINTER WEATHER AND WIND IMPACTS [UPDATE]... .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 western Montana late Friday night into early Saturday morning with the arrival of a strong cold front. 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 12-16 inches possible at Lookout Pass. Winds gusting as high as 45 mph. * WHERE...Highway 200 Trout Creek to Heron, Evaro Hill, I-90 Lookout Pass to Haugan, and Highway 200 Thompson Falls to Plains. * WHEN...Until 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. Heavy snow bands and or snow squalls are possible late Friday night into Saturday morning with the arrival of a strong cold front. |