Yellowstone National Park, Wyoming
Regional Weather Alerts
| Alert: | Winter Storm Warning |
| Area(s): | Judith Gap |
| Effective: | 2026-10-11 @ 1:25 pm -> 2026-10-12 @ 1:00 pm |
| Onset: | 2026-10-11 @ 1:25 pm -> 2026-10-12 @ 1:00 pm |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Billings MT on 2026-10-11 @ 1:25 pm |
| Headline: | Winter Storm Warning issued October 11 at 12:25PM MDT until October 12 at 12:00PM MDT by NWS Billings MT |
| Description: |
* WHAT...Heavy snow occurring. Additional snow accumulations between 3 and 5 inches. Winds gusting as high as 30 mph. * WHERE...Judith Gap. * WHEN...Until noon MDT Monday. * IMPACTS...Travel could be very difficult. Areas of blowing snow could significantly reduce visibility. The hazardous conditions will impact the Monday morning commute. |
| Alert: | Winter Weather Advisory |
| Area(s): | Northern Park; Livingston Area; Beartooth Foothills; Northern Sweet Grass; Southern Wheatland |
| Effective: | 2026-10-11 @ 1:25 pm -> 2026-10-12 @ 1:00 pm |
| Onset: | 2026-10-11 @ 1:25 pm -> 2026-10-12 @ 1:00 pm |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Billings MT on 2026-10-11 @ 1:25 pm |
| Headline: | Winter Weather Advisory issued October 11 at 12:25PM MDT until October 12 at 12:00PM MDT by NWS Billings MT |
| Description: |
* WHAT...Wet snow occurring. Additional snow accumulations between 1 and 3 inches. Winds gusting as high as 35 mph. * WHERE...Southern Wheatland, Beartooth Foothills, Livingston Area, Northern Park, and Northern Sweet Grass. * WHEN...Until noon MDT Monday. * IMPACTS...Plan on slippery road conditions. The hazardous conditions will impact the Monday morning commute. |
| Alert: | Winter Weather Advisory |
| Area(s): | Musselshell; Northern Stillwater; Golden Valley |
| Effective: | 2026-10-11 @ 1:25 pm -> 2026-10-12 @ 1:00 pm |
| Onset: | 2026-10-11 @ 7:00 pm -> 2026-10-12 @ 1:00 pm |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Billings MT on 2026-10-11 @ 1:25 pm |
| Headline: | Winter Weather Advisory issued October 11 at 12:25PM MDT until October 12 at 12:00PM MDT by NWS Billings MT |
| Description: |
* WHAT...Wet snow expected. Total snow accumulations up to two inches. Winds gusting as high as 30 mph. * WHERE...Golden Valley, Musselshell, and Northern Stillwater. * WHEN...From 6 PM this evening to noon MDT Monday. * IMPACTS...Plan on slippery road conditions. The hazardous conditions will impact the Monday morning commute. |
| Alert: | Winter Storm Warning |
| Area(s): | Melville Foothills |
| Effective: | 2026-10-11 @ 1:25 pm -> 2026-10-12 @ 1:00 pm |
| Onset: | 2026-10-11 @ 1:25 pm -> 2026-10-12 @ 1:00 pm |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Billings MT on 2026-10-11 @ 1:25 pm |
| Headline: | Winter Storm Warning issued October 11 at 12:25PM MDT until October 12 at 12:00PM MDT by NWS Billings MT |
| Description: |
* WHAT...Heavy wet snow occurring. Additional snow accumulations between 3 and 5 inches. Winds gusting as high as 30 mph. * WHERE...Melville Foothills. * WHEN...Until noon MDT Monday. * IMPACTS...Travel could be very difficult. The hazardous conditions will impact the Monday morning commute. Recreation in the high country will be impacted by heavy accumulating snow. |
| Alert: | Winter Storm Warning |
| Area(s): | Absaroka/Beartooth Mountains; Crazy Mountains |
| Effective: | 2026-10-11 @ 1:25 pm -> 2026-10-12 @ 1:00 pm |
| Onset: | 2026-10-11 @ 1:25 pm -> 2026-10-12 @ 1:00 pm |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Billings MT on 2026-10-11 @ 1:25 pm |
| Headline: | Winter Storm Warning issued October 11 at 12:25PM MDT until October 12 at 12:00PM MDT by NWS Billings MT |
| Description: |
* WHAT...Heavy snow occurring. Additional snow accumulations between 1 and 6 inches. Winds gusting as high as 30 mph. * WHERE...Absaroka/Beartooth Mountains and Crazy Mountains. * WHEN...Until noon MDT Monday. * IMPACTS...Plan on slippery road conditions. Recreation in the high country will be impacted by heavy accumulating snow. |
| Alert: | Winter Weather Advisory |
| Area(s): | Southwest Phillips |
| Effective: | 2026-10-11 @ 1:06 pm -> 2026-10-12 @ 7:00 am |
| Onset: | 2026-10-11 @ 1:06 pm -> 2026-10-12 @ 1:00 pm |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Glasgow MT on 2026-10-11 @ 1:06 pm |
| Headline: | Winter Weather Advisory issued October 11 at 12:06PM MDT until October 12 at 12:00PM MDT by NWS Glasgow MT |
| Description: |
* WHAT...Wet snow. Additional snow accumulations up to 6 inches. * WHERE...Southwest Phillips County. * WHEN...Until noon MDT Monday. * IMPACTS...Plan on slippery road conditions. The hazardous conditions will impact the Monday morning commute. |
| Alert: | Winter Weather Advisory |
| Area(s): | Northern Phillips; Northern Valley |
| Effective: | 2026-10-11 @ 1:06 pm -> 2026-10-12 @ 7:00 am |
| Onset: | 2026-10-11 @ 7:00 pm -> 2026-10-12 @ 1:00 pm |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Glasgow MT on 2026-10-11 @ 1:06 pm |
| Headline: | Winter Weather Advisory issued October 11 at 12:06PM MDT until October 12 at 12:00PM MDT by NWS Glasgow MT |
| Description: |
* WHAT...Wet snow expected. Total snow accumulations between 1 and 3 inches. * WHERE...Northern Phillips and Northern Valley Counties. * WHEN...From 6 PM this evening to noon MDT Monday. * IMPACTS...Plan on slippery road conditions. The hazardous conditions will impact the Monday morning commute. |
| Alert: | Lake Wind Advisory |
| Area(s): | Flathead/Mission Valleys |
| Effective: | 2026-10-11 @ 11:36 am -> 2026-10-12 @ 7:00 am |
| Onset: | 2026-10-11 @ 11:36 am -> 2026-10-12 @ 7:00 am |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Missoula MT on 2026-10-11 @ 11:36 am |
| Headline: | Lake Wind Advisory issued October 11 at 10:36AM MDT until October 12 at 6:00AM MDT by NWS Missoula MT |
| Description: |
* WHAT...Wind Advisory canceled and turned into a Lake Wind Advisory as impacts become focused on Flathead Lake, rather than a larger area. Northeast to east winds 10 to 20 mph with gusts up to 35 mph. Localized gusts of 45 to 50 mph on the east side of Flathead Lake. * WHERE...Flathead Lake. * WHEN...Until 6 AM MDT Monday. * IMPACTS...Strong winds and rough waves on area lakes will create hazardous conditions for small craft. Localized tree damage and power outages are still possible. |
| 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: | 2026-10-11 @ 11:29 am -> 2026-10-12 @ 2:30 am |
| Onset: | 2026-10-11 @ 11:29 am -> 2026-10-12 @ 7:00 am |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Great Falls MT on 2026-10-11 @ 11:29 am |
| Headline: | Winter Storm Warning issued October 11 at 10:29AM MDT until October 12 at 6:00AM MDT by NWS Great Falls MT |
| Description: |
* WHAT...Heavy, wet snow. Additional snow accumulations between 5 and 9 inches. * WHERE...Meagher County Valleys, Cascade County below 5000ft, Eastern Pondera and Eastern Teton, and Judith Basin County and Judith Gap. * 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): | Big Belt, Bridger and Castle Mountains |
| Effective: | 2026-10-11 @ 11:29 am -> 2026-10-12 @ 2:30 am |
| Onset: | 2026-10-11 @ 11:29 am -> 2026-10-12 @ 7:00 am |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Great Falls MT on 2026-10-11 @ 11:29 am |
| Headline: | Winter Storm Warning issued October 11 at 10:29AM MDT until October 12 at 6:00AM MDT by NWS Great Falls MT |
| Description: |
* WHAT...Heavy, wet snow. Additional snow accumulations between 4 and 6 inches. * WHERE...Big Belt, Bridger and Castle Mountains. * 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): | Gallatin Valley |
| Effective: | 2026-10-11 @ 11:29 am -> 2026-10-12 @ 2:30 am |
| Onset: | 2026-10-11 @ 11:29 am -> 2026-10-12 @ 7:00 am |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Great Falls MT on 2026-10-11 @ 11:29 am |
| Headline: | Winter Storm Warning issued October 11 at 10:29AM MDT until October 12 at 6:00AM MDT by NWS Great Falls MT |
| Description: |
* WHAT...Heavy, wet snow. Additional snow accumulations between 3 and 6 inches. * WHERE...Gallatin Valley. * 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. The hazardous conditions will impact the Monday morning commute. * 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): | Canyon Ferry Area; Northwest Beaverhead County; Beaverhead and Western Madison below 6000ft; Ruby Mountains and Southern Beaverhead Mountains; Gallatin and Madison County Mountains and Centennial Mountains |
| Effective: | 2026-10-11 @ 11:29 am -> 2026-10-12 @ 2:30 am |
| Onset: | 2026-10-11 @ 11:29 am -> 2026-10-12 @ 7:00 am |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Great Falls MT on 2026-10-11 @ 11:29 am |
| Headline: | Winter Weather Advisory issued October 11 at 10:29AM MDT until October 12 at 6:00AM MDT by NWS Great Falls MT |
| Description: |
* WHAT...Snow. Additional snow accumulations between 2 and 4 inches across lower elevations, with up to 7 inches in the mountains. Winds gusting as high as 35 mph. * WHERE...Canyon Ferry Area, Beaverhead and Western Madison below 6000ft, Gallatin and Madison County Mountains and Centennial Mountains, Northwest Beaverhead County, and Ruby Mountains and Southern Beaverhead Mountains. * WHEN...Until 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): | Helena Valley; Missouri Headwaters; Madison River Valley |
| Effective: | 2026-10-11 @ 11:29 am -> 2026-10-12 @ 2:30 am |
| Onset: | 2026-10-11 @ 11:29 am -> 2026-10-12 @ 7:00 am |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Great Falls MT on 2026-10-11 @ 11:29 am |
| Headline: | Winter Storm Warning issued October 11 at 10:29AM MDT until October 12 at 6:00AM MDT by NWS Great Falls MT |
| Description: |
* WHAT...Heavy, wet snow. Additional snow accumulations between 3 and 7 inches. Winds gusting as high as 40 mph. * WHERE...Helena Valley, Madison River Valley, and Missouri Headwaters. * 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): | East Glacier Park Region; Northern High Plains; Southern Rocky Mountain Front; Southern High Plains; Upper Blackfoot and MacDonald Pass; Gates of the Mountains |
| Effective: | 2026-10-11 @ 11:29 am -> 2026-10-12 @ 2:30 am |
| Onset: | 2026-10-11 @ 11:29 am -> 2026-10-12 @ 7:00 am |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Great Falls MT on 2026-10-11 @ 11:29 am |
| Headline: | Winter Storm Warning issued October 11 at 10:29AM MDT until October 12 at 6:00AM MDT by NWS Great Falls MT |
| Description: |
* WHAT...Heavy, wet snow. Additional snow accumulations between 3 and 6 inches north of the US Hwy 2 corridor, with 6 to 12 inches possible south of the US Hwy 2 corridor. * WHERE...Portions of central and north central Montana. * 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): | Little Belt and Highwood Mountains; Snowy and Judith Mountains; Elkhorn and Boulder Mountains |
| Effective: | 2026-10-11 @ 11:29 am -> 2026-10-12 @ 2:30 am |
| Onset: | 2026-10-11 @ 11:29 am -> 2026-10-12 @ 7:00 am |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Great Falls MT on 2026-10-11 @ 11:29 am |
| Headline: | Winter Storm Warning issued October 11 at 10:29AM MDT until October 12 at 6:00AM MDT by NWS Great Falls MT |
| Description: |
* WHAT...Heavy, wet snow. Additional snow accumulations between 4 and 9 inches. * WHERE...Elkhorn and Boulder Mountains, Little Belt and Highwood Mountains, and Snowy and Judith Mountains. * 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 |
| Effective: | 2026-10-11 @ 11:29 am -> 2026-10-12 @ 2:30 am |
| Onset: | 2026-10-11 @ 11:29 am -> 2026-10-12 @ 7:00 am |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Great Falls MT on 2026-10-11 @ 11:29 am |
| Headline: | Winter Weather Advisory issued October 11 at 10:29AM MDT until October 12 at 6:00AM MDT by NWS Great Falls MT |
| Description: |
* WHAT...Snow. Additional snow accumulations between 2 and 4 inches across lower elevations, with up to 9 inches in the mountains. * WHERE...Bears Paw Mountains and Southern Blaine, Eastern Glacier, Western Toole, and Central Pondera, Eastern Toole and Liberty, and Western and Central Chouteau County. * WHEN...Until 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): | Fergus County below 4500ft |
| Effective: | 2026-10-11 @ 11:29 am -> 2026-10-12 @ 2:30 am |
| Onset: | 2026-10-11 @ 11:29 am -> 2026-10-12 @ 7:00 am |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Great Falls MT on 2026-10-11 @ 11:29 am |
| Headline: | Winter Storm Warning issued October 11 at 10:29AM MDT until October 12 at 6:00AM MDT by NWS Great Falls MT |
| Description: |
* WHAT...Heavy, wet snow. Additional snow accumulations of 4 to 8 inches. * WHERE...Fergus County below 4500ft. * 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): | 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): | 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): | 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 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. |
