Yellowstone National Park, Wyoming
Regional Weather Alerts
| Alert: | Winter Storm Watch |
| Area(s): | Absaroka/Beartooth Mountains; Crazy Mountains |
| Effective: | 2026-10-08 @ 3:40 pm -> 2026-10-09 @ 3:45 pm |
| Onset: | 2026-10-10 @ 7:00 pm -> 2026-10-12 @ 7:00 am |
| Severity: | Severe |
| Certainty: | Possible |
| Urgency: | Future |
| Issued By: | NWS Billings MT on 2026-10-08 @ 3:40 pm |
| Headline: | Winter Storm Watch issued October 8 at 2:40PM MDT until October 12 at 6:00AM MDT by NWS Billings MT |
| Description: |
* WHAT...Heavy snow possible. Total snow accumulations greater than 12 inches possible. Winds could gust as high as 30 mph. * WHERE...Absaroka/Beartooth Mountains and Crazy Mountains. * WHEN...From Saturday evening through late Sunday night. * IMPACTS...Travel could be very difficult to impossible. Recreation in the backcountry will be impacted. * ADDITIONAL DETAILS... |
| Alert: | Winter Storm Watch |
| Area(s): | Southern Rocky Mountain Front; Southern High Plains; Upper Blackfoot and MacDonald Pass; Gates of the Mountains |
| Effective: | 2026-10-08 @ 3:39 pm -> 2026-10-09 @ 7:45 am |
| Onset: | 2026-10-10 @ 1:00 pm -> 2026-10-11 @ 7:00 pm |
| Severity: | Severe |
| Certainty: | Possible |
| Urgency: | Future |
| Issued By: | NWS Great Falls MT on 2026-10-08 @ 3:39 pm |
| Headline: | Winter Storm Watch issued October 8 at 2:39PM MDT until October 11 at 6:00PM MDT by NWS Great Falls MT |
| Description: |
* WHAT...Heavy snow possible. Total snow accumulations up to 9 inches below 6000 feet and between 8 to 12 inches above 6000 feet. Winds could gust as high as 45 mph. * WHERE...Gates of the Mountains, Upper Blackfoot and MacDonald Pass, Southern High Plains, and Southern Rocky Mountain Front. * WHEN...From Saturday afternoon through Sunday afternoon. * IMPACTS...Travel could be very difficult, especially over mountain passes. Back country conditions may be very dangerous. Wet snow and gusty winds may down trees limbs and power lines. * ADDITIONAL DETAILS...A snow band may develop across portions of Central Montana leading to locally higher snowfall rates and amounts. |
| Alert: | Winter Storm Watch |
| Area(s): | Little Belt and Highwood Mountains; Helena Valley; Elkhorn and Boulder Mountains |
| Effective: | 2026-10-08 @ 3:39 pm -> 2026-10-09 @ 7:45 am |
| Onset: | 2026-10-10 @ 7:00 pm -> 2026-10-11 @ 7:00 pm |
| Severity: | Severe |
| Certainty: | Possible |
| Urgency: | Future |
| Issued By: | NWS Great Falls MT on 2026-10-08 @ 3:39 pm |
| Headline: | Winter Storm Watch issued October 8 at 2:39PM MDT until October 11 at 6:00PM MDT by NWS Great Falls MT |
| Description: |
* WHAT...Heavy snow possible. Total snow accumulations up to 6 inches below 5000 feet and between 6 and 12 inches possible above 5000 feet. Winds could gust as high as 45 mph. * WHERE...Elkhorn and Boulder Mountains, Helena Valley, and Little Belt and Highwood Mountains. * WHEN...From Saturday evening through Sunday afternoon. * IMPACTS...Travel could be very difficult, especially over mountain passes. Back country conditions may be very dangerous. Wet snow and gusty winds may down trees limbs and power lines. * ADDITIONAL DETAILS...A snow band may develop across portions of Central Montana leading to locally higher snowfall rates and amounts. |
| Alert: | Winter Storm Watch |
| Area(s): | Big Belt, Bridger and Castle Mountains; Gallatin and Madison County Mountains and Centennial Mountains |
| Effective: | 2026-10-08 @ 3:39 pm -> 2026-10-09 @ 7:45 am |
| Onset: | 2026-10-10 @ 7:00 pm -> 2026-10-12 @ 7:00 am |
| Severity: | Severe |
| Certainty: | Possible |
| Urgency: | Future |
| Issued By: | NWS Great Falls MT on 2026-10-08 @ 3:39 pm |
| Headline: | Winter Storm Watch issued October 8 at 2:39PM MDT until October 12 at 6:00AM MDT by NWS Great Falls MT |
| Description: |
* WHAT...Heavy snow possible. Total snow accumulations between 6 and 12 inches along the Big Belt Mountains and between 6 and 12 inches above 7000 feet in the mountains of Madison and Gallatin counties. Winds could gust as high as 45 mph. * WHERE...Big Belt, Bridger and Castle Mountains and Gallatin and Madison County Mountains and Centennial Mountains. * WHEN...From Saturday evening through late Sunday night. * IMPACTS...Travel could be very difficult, especially over mountain passes. Back country conditions may be very dangerous. Wet snow and gusty winds may down trees limbs and power lines. |
| Alert: | Lake Wind Advisory |
| Area(s): | Flathead/Mission Valleys |
| Effective: | 2026-10-08 @ 2:34 pm -> 2026-10-09 @ 2:45 pm |
| Onset: | 2026-10-09 @ 1:00 pm -> 2026-10-09 @ 10:00 pm |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Missoula MT on 2026-10-08 @ 2:34 pm |
| Headline: | Lake Wind Advisory issued October 8 at 1:34PM MDT until October 9 at 9:00PM MDT by NWS Missoula MT |
| Description: |
* WHAT...Southwest winds 10 to 20 mph with gusts up to 35 mph expected. * WHERE...Flathead Lake and surrounding lakes * WHEN...From noon to 9 PM MDT Friday. * IMPACTS...Strong winds and rough waves on area lakes will create hazardous conditions for small craft and potential dock damage on the eastern half of Flathead Lake. |
| Alert: | Winter Weather Advisory |
| Area(s): | Bitterroot/Sapphire Mountains; Potomac/Seeley Lake Region |
| Effective: | 2026-10-08 @ 2:30 pm -> 2026-10-08 @ 10:30 pm |
| Onset: | 2026-10-10 @ 7:00 pm -> 2026-10-11 @ 7:00 pm |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Missoula MT on 2026-10-08 @ 2:30 pm |
| Headline: | Winter Weather Advisory issued October 8 at 1:30PM MDT until October 11 at 6:00PM MDT by NWS Missoula MT |
| Description: |
* WHAT...Snow expected. Total snow accumulations up to 3 inches. Winds gusting as high as 35 mph. * WHERE...Lolo Pass, Highway 83 Seeley Lake to Condon, I-90 East Missoula to Bearmouth, Highway 93 Sula to Lost Trail Pass, and Highway 200 Bonner to Greenough. * WHEN...From 6 PM Saturday to 6 PM MDT Sunday. * IMPACTS...Plan on slippery road conditions. |
| Alert: | Winter Storm Watch |
| Area(s): | Butte/Blackfoot Region |
| Effective: | 2026-10-08 @ 2:30 pm -> 2026-10-08 @ 10:30 pm |
| Onset: | 2026-10-10 @ 7:00 pm -> 2026-10-11 @ 7:00 pm |
| Severity: | Severe |
| Certainty: | Possible |
| Urgency: | Future |
| Issued By: | NWS Missoula MT on 2026-10-08 @ 2:30 pm |
| Headline: | Winter Storm Watch issued October 8 at 1:30PM MDT until October 11 at 6:00PM MDT by NWS Missoula MT |
| Description: |
* WHAT...Heavy snow possible. Total snow accumulations between 3 and 7 inches possible. Winds could gust as high as 45 mph. * WHERE...Homestake Pass, Butte, Georgetown Lake, MacDonald Pass, and Highway 12 Garrison to Elliston. * WHEN...From Saturday evening through Sunday afternoon. * IMPACTS...Travel could be very difficult. The strong winds and weight of snow on tree limbs may down power lines and could cause sporadic power outages. |
| Alert: | Red Flag Warning |
| Area(s): | Gallatin National Forest; Wheatland County/Sweet Grass County; Beartooth Ranger District Custer National Forest; Sheridan County/Casper BLM; Bighorn National Forest |
| Effective: | 2026-10-08 @ 1:52 pm -> 2026-10-09 @ 2:00 pm |
| Onset: | 2026-10-09 @ 1:00 pm -> 2026-10-09 @ 10:00 pm |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Billings MT on 2026-10-08 @ 1:52 pm |
| Headline: | Red Flag Warning issued October 8 at 12:52PM MDT until October 9 at 9:00PM MDT by NWS Billings MT |
| Description: |
The National Weather Service in Billings has issued a Red Flag Warning...which is in effect from noon to 9 PM MDT Friday. The Fire Weather Watch is no longer in effect. * IMPACTS: Low humidities, unseasonably warm temperatures, and strong gusty winds will create erratic fire behavior for new or existing fire starts. * AFFECTED AREA: In North Central WY Fire Zones...274...284. In South Central MT Fire Zones...123...124...126. * COUNTIES AFFECTED: In Central MT...Wheatland. In North Central WY...Big Horn...Johnson...Sheridan...Washakie. In South Central MT...Carbon...Park...Stillwater...Sweet Grass. In Southwest MT...Gallatin. * WIND: Southwest 15 to 25 mph with gusts up to 45 mph. * HUMIDITY: As low as 9 percent. * TEMPERATURES: Up to 88. * ADDITIONAL DETAILS: The worst conditions are expected across the lower to middle elevations in fine fuels. The strongest winds are expected in mountain locations and the foothills west of Billings. Zone WY274 will see lower wind speeds. |
| Alert: | Red Flag Warning |
| Area(s): | Central and Eastern Lewis and Clark National Forest Areas; Helena and Townsend Ranger Districts of the Helena National Forest |
| Effective: | 2026-10-08 @ 12:25 pm -> 2026-10-09 @ 7:00 am |
| Onset: | 2026-10-09 @ 1:00 pm -> 2026-10-09 @ 10:00 pm |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Great Falls MT on 2026-10-08 @ 12:25 pm |
| Headline: | Red Flag Warning issued October 8 at 11:25AM MDT until October 9 at 9:00PM MDT by NWS Great Falls MT |
| Description: |
The National Weather Service in Great Falls has issued a Red Flag Warning for unseasonably warm temperatures, gusty winds, and low relative humidity, which is in effect from noon to 9 PM MDT Friday. The Fire Weather Watch is no longer in effect. * AFFECTED AREA...Central and Eastern Lewis and Clark National Forest Areas and Helena and Townsend Ranger Districts of the Helena National Forest. * WINDS...West 15 to 25 mph with gusts up to 45 mph. * RELATIVE HUMIDITY...As low as 14 percent. * TEMPERATURES...Up to 82. * IMPACTS... Any fires that develop will spread rapidly. Containment of any ongoing or new fires may be very difficult. Outdoor burning is not recommended. |
