Yellowstone National Park, Wyoming
Regional Weather Alerts
| Alert: | Winter Weather Advisory |
| Area(s): | Bitterroot/Sapphire Mountains; Potomac/Seeley Lake Region |
| Effective: | 2026-10-10 @ 12:42 pm -> 2026-10-12 @ 7:00 am |
| Onset: | 2026-10-10 @ 7:00 pm -> 2026-10-12 @ 7:00 am |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Missoula MT on 2026-10-10 @ 12:42 pm |
| Headline: | Winter Weather Advisory issued October 10 at 11:42AM MDT until October 12 at 6:00AM MDT by NWS Missoula MT |
| Description: |
* WHAT...Snow expected. Total snow accumulations between 2 and 6 inches, locally higher totals of 8 to 10 inches in the mountains. Winds gusting as high as 40 mph. * WHERE...I-90 East Missoula to Bearmouth, Highway 93 Sula to Lost Trail Pass, Highway 83 Seeley Lake to Condon, Lolo Pass, and Highway 200 Bonner to Greenough. * WHEN...From 6 PM this evening to 6 AM MDT Monday. * IMPACTS...Plan on slippery road conditions. |
| Alert: | Winter Storm Warning |
| Area(s): | Butte/Blackfoot Region |
| Effective: | 2026-10-10 @ 12:42 pm -> 2026-10-12 @ 7:00 am |
| Onset: | 2026-10-10 @ 7:00 pm -> 2026-10-12 @ 7:00 am |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Missoula MT on 2026-10-10 @ 12:42 pm |
| Headline: | Winter Storm Warning issued October 10 at 11:42AM MDT until October 12 at 6:00AM MDT by NWS Missoula MT |
| Description: |
* WHAT...Heavy snow expected. Total snow accumulations between 3 and 9 inches. Snow totals of 12-18 inches in the higher mountain areas. Winds gusting as high as 45 mph. * WHERE...MacDonald Pass, Homestake Pass, Highway 12 Garrison to Elliston, Georgetown Lake, and Butte. * WHEN...From 6 PM this evening to 6 AM MDT Monday. * IMPACTS...Travel could be very difficult. |
| Alert: | Winter Weather Advisory |
| Area(s): | West Glacier Region |
| Effective: | 2026-10-10 @ 12:42 pm -> 2026-10-12 @ 7:00 am |
| Onset: | 2026-10-10 @ 7:00 pm -> 2026-10-12 @ 7:00 am |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Missoula MT on 2026-10-10 @ 12:42 pm |
| Headline: | Winter Weather Advisory issued October 10 at 11:42AM MDT until October 12 at 6:00AM MDT by NWS Missoula MT |
| Description: |
* WHAT...Snow expected. Total snow accumulations between 1 and 3 inches, with higher amounts above valley floors and in Glacier National Park. Winds gusting as high as 45 mph. * WHERE...Essex, Polebridge, Bad Rock Canyon, Glacier National Park, Highway 83 Bigfork to Swan Lake, and Marias Pass. * WHEN...From 6 PM this evening to 6 AM MDT Monday. * IMPACTS...Plan on slippery road conditions. |
| Alert: | Winter Storm Warning |
| Area(s): | Little Belt and Highwood Mountains; Snowy and Judith Mountains; Elkhorn and Boulder Mountains |
| Effective: | 2026-10-10 @ 11:56 am -> 2026-10-11 @ 7:00 am |
| Onset: | 2026-10-10 @ 7:00 pm -> 2026-10-12 @ 7:00 am |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Great Falls MT on 2026-10-10 @ 11:56 am |
| Headline: | Winter Storm Warning issued October 10 at 10:56AM MDT until October 12 at 6:00AM MDT by NWS Great Falls MT |
| Description: |
* WHAT...Heavy, wet snow expected. Total snow accumulations between 6 and 12 inches. Highest snowfall amounts in the northern slopes between 4500 feet and 6500 feet. Winds gusting as high as 45 mph. * WHERE...Elkhorn and Boulder Mountains, Little Belt and Highwood Mountains, and Snowy and Judith Mountains. * WHEN...From 6 PM this evening to 6 AM MDT Monday. * IMPACTS...Travel could be very difficult. Gusty winds combined with the wet and heavy nature of the snow could bring down tree branches. Isolated power outages are possible. * ADDITIONAL DETAILS...Snowfall amounts will vary drastically from grassy surfaces to roadways, most notably at lower elevations, with accumulations on non-grassy surfaces being confined mainly to between the evening through late morning hours. |
| Alert: | Winter Storm Warning |
| Area(s): | Southern Rocky Mountain Front; Southern High Plains; Upper Blackfoot and MacDonald Pass; Gates of the Mountains |
| Effective: | 2026-10-10 @ 11:56 am -> 2026-10-11 @ 7:00 am |
| Onset: | 2026-10-10 @ 1:00 pm -> 2026-10-12 @ 7:00 am |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Great Falls MT on 2026-10-10 @ 11:56 am |
| Headline: | Winter Storm Warning issued October 10 at 10:56AM MDT until October 12 at 6:00AM MDT by NWS Great Falls MT |
| Description: |
* WHAT...Heavy, wet snow expected. Total snow accumulations between 10 and 20 inches, with the exception of the Lincoln valley where up to 7 inches is expected. Isolated amounts approaching 30 inches within the Bob Marshall Wilderness. Winds gusting as high as 45 mph. * WHERE...Gates of the Mountains, Upper Blackfoot and MacDonald Pass, Southern High Plains, and Southern Rocky Mountain Front. * WHEN...Until 6 AM MDT Monday. * IMPACTS...Travel could be very difficult. Gusty winds combined with the wet and heavy nature of the snow could bring down tree branches. Isolated power outages are possible. * ADDITIONAL DETAILS...Snowfall amounts will vary drastically from grassy surfaces to roadways, most notably at lower elevations, with accumulations on non-grassy surfaces being confined mainly to between the evening through late morning hours. |
| Alert: | Winter Weather Advisory |
| Area(s): | Eastern Glacier, Western Toole, and Central Pondera; Eastern Toole and Liberty; Western and Central Chouteau County; Bears Paw Mountains and Southern Blaine; Fergus County below 4500ft |
| Effective: | 2026-10-10 @ 11:56 am -> 2026-10-11 @ 7:00 am |
| Onset: | 2026-10-10 @ 7:00 pm -> 2026-10-12 @ 7:00 am |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Great Falls MT on 2026-10-10 @ 11:56 am |
| Headline: | Winter Weather Advisory issued October 10 at 10:56AM MDT until October 12 at 6:00AM MDT by NWS Great Falls MT |
| Description: |
* WHAT...Snow expected. Total snow accumulations of between 3 to 5 inches across lower elevations, with 5 to 10 inches in the mountains. Locally higher amounts possible. Winds gusting as high as 40 mph. * WHERE...Bears Paw Mountains and Southern Blaine, Eastern Glacier, Western Toole, and Central Pondera, Eastern Toole and Liberty, Fergus County below 4500ft, and Western and Central Chouteau County. * WHEN...From 6 PM this evening to 6 AM MDT Monday. * IMPACTS...Travel could be difficult. Gusty winds combined with the wet and heavy nature of the snow could bring down tree branches. Isolated power outages are possible. * ADDITIONAL DETAILS...Snowfall amounts will vary drastically from grassy surfaces to roadways, most notably at lower elevations, with accumulations on non-grassy surfaces being confined mainly to between the evening through late morning hours. |
| Alert: | Winter Storm Warning |
| Area(s): | Big Belt, Bridger and Castle Mountains |
| Effective: | 2026-10-10 @ 11:56 am -> 2026-10-11 @ 7:00 am |
| Onset: | 2026-10-10 @ 7:00 pm -> 2026-10-12 @ 7:00 am |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Great Falls MT on 2026-10-10 @ 11:56 am |
| Headline: | Winter Storm Warning issued October 10 at 10:56AM MDT until October 12 at 6:00AM MDT by NWS Great Falls MT |
| Description: |
* WHAT...Heavy, wet snow expected. Total snow accumulations between 6 and 14 inches. Winds gusting as high as 40 mph. * WHERE...Big Belt, Bridger and Castle Mountains. * WHEN...From 6 PM this evening to 6 AM MDT Monday. * IMPACTS...Travel could be very difficult. Gusty winds combined with the wet and heavy nature of the snow could bring down tree branches. Isolated power outages are possible. * ADDITIONAL DETAILS...Snowfall amounts will vary drastically from grassy surfaces to roadways, most notably at lower elevations, with accumulations on non-grassy surfaces being confined mainly to between the evening through late morning hours. |
| Alert: | Winter Weather Advisory |
| Area(s): | Helena Valley; Canyon Ferry Area; Missouri Headwaters; Madison River Valley; Gallatin Valley; Northwest Beaverhead County; Beaverhead and Western Madison below 6000ft; Ruby Mountains and Southern Beaverhead Mountains; Gallatin and Madison County Mountains and Centennial Mountains |
| Effective: | 2026-10-10 @ 11:56 am -> 2026-10-11 @ 7:00 am |
| Onset: | 2026-10-10 @ 7:00 pm -> 2026-10-12 @ 7:00 am |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Great Falls MT on 2026-10-10 @ 11:56 am |
| Headline: | Winter Weather Advisory issued October 10 at 10:56AM MDT until October 12 at 6:00AM MDT by NWS Great Falls MT |
| Description: |
* WHAT...Snow expected. Total snow accumulations of between 2 to 5 inches across lower elevations, with 5 to 8 inches in the mountains. Locally higher amounts possible. Winds gusting as high as 50 mph. * WHERE...Portions of central and southwest Montana. * WHEN...From 6 PM this evening to 6 AM MDT Monday. * IMPACTS...Travel could be difficult. Gusty winds combined with the wet and heavy nature of the snow could bring down tree branches. Isolated power outages are possible. * ADDITIONAL DETAILS...Snowfall amounts will vary drastically from grassy surfaces to roadways, most notably at lower elevations, with accumulations on non-grassy surfaces being confined mainly to between the evening through late morning hours. |
| Alert: | Winter Storm Warning |
| Area(s): | East Glacier Park Region; Northern High Plains |
| Effective: | 2026-10-10 @ 11:56 am -> 2026-10-11 @ 7:00 am |
| Onset: | 2026-10-10 @ 1:00 pm -> 2026-10-12 @ 7:00 am |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Great Falls MT on 2026-10-10 @ 11:56 am |
| Headline: | Winter Storm Warning issued October 10 at 10:56AM MDT until October 12 at 6:00AM MDT by NWS Great Falls MT |
| Description: |
* WHAT...Heavy, wet snow expected. Total snow accumulations between 10 and 20 inches, with the highest amounts in the mountains south of US Highway 2. Winds gusting as high as 50 mph. * WHERE...East Glacier Park Region Zone, and Northern High Plains. * WHEN...Until 6 AM MDT Monday. * IMPACTS...Travel could be very difficult. Gusty winds combined with the wet and heavy nature of the snow could bring down tree branches. Isolated power outages are possible. * ADDITIONAL DETAILS...Snowfall amounts will vary drastically from grassy surfaces to roadways, most notably at lower elevations, with accumulations on non-grassy surfaces being confined mainly to between the evening through late morning hours. |
| Alert: | Winter Storm Warning |
| Area(s): | Eastern Pondera and Eastern Teton; Cascade County below 5000ft; Judith Basin County and Judith Gap; Meagher County Valleys |
| Effective: | 2026-10-10 @ 11:56 am -> 2026-10-11 @ 7:00 am |
| Onset: | 2026-10-10 @ 7:00 pm -> 2026-10-12 @ 7:00 am |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Great Falls MT on 2026-10-10 @ 11:56 am |
| Headline: | Winter Storm Warning issued October 10 at 10:56AM MDT until October 12 at 6:00AM MDT by NWS Great Falls MT |
| Description: |
* WHAT...Heavy, wet snow expected. Total snow accumulations between 7 and 14 inches. Winds gusting as high as 35 mph. * WHERE...Meagher County Valleys, Cascade County below 5000ft, Eastern Pondera and Eastern Teton, and Judith Basin County and Judith Gap. * WHEN...From 6 PM this evening to 6 AM MDT Monday. * IMPACTS...Travel could be very difficult. Gusty winds combined with the wet and heavy nature of the snow could bring down tree branches. Isolated power outages are possible. * ADDITIONAL DETAILS...Snowfall amounts will vary drastically from grassy surfaces to roadways, most notably at lower elevations, with accumulations on non-grassy surfaces being confined mainly to between the evening through late morning hours. |
| Alert: | Wind Advisory |
| Area(s): | Flathead/Mission Valleys |
| Effective: | 2026-10-10 @ 9:27 am -> 2026-10-11 @ 4:00 pm |
| Onset: | 2026-10-10 @ 4:00 pm -> 2026-10-11 @ 4:00 pm |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Missoula MT on 2026-10-10 @ 9:27 am |
| Headline: | Wind Advisory issued October 10 at 8:27AM MDT until October 11 at 3:00PM MDT by NWS Missoula MT |
| Description: |
* WHAT...Northeast to east winds 10 to 20 mph with gusts up to 40 mph expected. Isolated higher gusts of 50-55 mph on the east side of Flathead Lake, especially in west to east oriented gaps along Highway 35, also in the Lake Blaine area. * WHERE...Flathead/Mission Valleys. * WHEN...From 3 PM this afternoon to 3 PM MDT Sunday. * IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs and weakened trees could be blown down and a few power outages may result. Strong winds and rough waves on area lakes will create hazardous conditions for small craft. |
| Alert: | Winter Weather Advisory |
| Area(s): | Northern Park; Judith Gap; Livingston Area; Beartooth Foothills; Northern Sweet Grass; Southern Wheatland |
| Effective: | 2026-10-10 @ 1:53 am -> 2026-10-11 @ 2:00 am |
| Onset: | 2026-10-11 @ 1:00 am -> 2026-10-12 @ 1:00 pm |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Billings MT on 2026-10-10 @ 1:53 am |
| Headline: | Winter Weather Advisory issued October 10 at 12:53AM MDT until October 12 at 12:00PM MDT by NWS Billings MT |
| Description: |
* WHAT...Periods of wet snow and blowing snow expected. Total snow accumulations between 2 and 6 inches. Winds gusting as high as 40 mph. * WHERE...Portions of central and south central Montana. * WHEN...From midnight tonight to noon MDT Monday. * IMPACTS...Travel could be difficult, due to areas of slushy or snowy roads and poor visibility. This includes US-191 from Big Timber to Judith Gap, I-90 from Big Timber to Livingston, and over Bozeman Pass. * ADDITIONAL DETAILS...Tree and power line damage is possible which may result in power outages. |
| Alert: | Winter Storm Warning |
| Area(s): | Absaroka/Beartooth Mountains; Crazy Mountains |
| Effective: | 2026-10-10 @ 1:53 am -> 2026-10-11 @ 2:00 am |
| Onset: | 2026-10-10 @ 7:00 pm -> 2026-10-12 @ 1:00 pm |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Billings MT on 2026-10-10 @ 1:53 am |
| Headline: | Winter Storm Warning issued October 10 at 12:53AM MDT until October 12 at 12:00PM MDT by NWS Billings MT |
| Description: |
* WHAT...Periods of heavy snow and blowing snow expected. Total snow accumulations between 10 and 18 inches, greatest above 8000 feet. Winds gusting as high as 35 mph. * WHERE...Absaroka/Beartooth Mountains and Crazy Mountains. * WHEN...From 6 PM this evening to noon MDT Monday. * IMPACTS...Recreation in the high country will be impacted by severe winter conditions. Travel into Cooke City will be impacted. |
| Alert: | Winter Storm Warning |
| Area(s): | Melville Foothills |
| Effective: | 2026-10-10 @ 1:53 am -> 2026-10-11 @ 2:00 am |
| Onset: | 2026-10-11 @ 1:00 am -> 2026-10-12 @ 1:00 pm |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Billings MT on 2026-10-10 @ 1:53 am |
| Headline: | Winter Storm Warning issued October 10 at 12:53AM MDT until October 12 at 12:00PM MDT by NWS Billings MT |
| Description: |
* WHAT...Periods of heavy wet snow and blowing snwo expected. Total snow accumulations between 5 and 10 inches. Winds gusting as high as 35 mph. * WHERE...Melville Foothills. * WHEN...From midnight tonight to noon MDT Monday. * IMPACTS...Travel could be very difficult on local roads and US-191 in the Melville vicinity. The hazardous conditions will impact the Monday morning commute. * ADDITIONAL DETAILS...Tree and power line damage is possible which may result in power outages. |
| Alert: | Winter Storm Watch |
| Area(s): | Butte/Blackfoot Region |
| Effective: | 2026-10-09 @ 12:35 pm -> 2026-10-09 @ 12:51 pm |
| Onset: | 2026-10-10 @ 7:00 pm -> 2026-10-11 @ 7:00 pm |
| Severity: | Severe |
| Certainty: | Observed |
| Urgency: | Past |
| Issued By: | NWS Missoula MT on 2026-10-09 @ 12:35 pm |
| Headline: | The Winter Storm Watch has been replaced. Please see the latest information from NWS Missoula MT on this developing situation. |
| Description: |
The Winter Storm Watch has been replaced. Please see the latest information from NWS Missoula MT on this developing situation. |
