Yellowstone National Park, Wyoming
Regional Weather Alerts
| Alert: | Special Weather Statement |
| Area(s): | Eastern Toole and Liberty; Hill County; Northern Blaine County; Eastern Pondera and Eastern Teton; Western and Central Chouteau County; Cascade County below 5000ft; Judith Basin County and Judith Gap; Fergus County below 4500ft; Snowy and Judith Mountains |
| Effective: | 2026-09-25 @ 2:17 pm -> 2026-09-25 @ 8:30 pm |
| Onset: | 2026-09-25 @ 2:17 pm |
| Severity: | Moderate |
| Certainty: | Observed |
| Urgency: | Expected |
| Issued By: | NWS Great Falls MT on 2026-09-25 @ 2:17 pm |
| Headline: | Special Weather Statement issued September 25 at 1:17PM MDT by NWS Great Falls MT |
| Description: |
Gusty to strong westerly winds will develop over much of central and north-central Montana by this evening. The combination of the frontal passage with isolated shower and thunderstorm activity will result in brief instances of wind gusts exceeding 50 mph. These winds may cause more damage to trees and power lines than what is normally observed due to most trees being fully leafed out and some trees being weakened by previous storms. Additionally, any damaged tree branches may break loose and become projectiles. Pedestrians and those outdoors should watch for flying debris and avoid being near trees if possible during times of stronger winds. Also, those traveling along north to south oriented roadways should be prepared for strong cross winds. |
| Alert: | High Wind Warning |
| Area(s): | Bears Paw Mountains and Southern Blaine |
| Effective: | 2026-09-25 @ 1:31 pm -> 2026-09-26 @ 4:45 am |
| Onset: | 2026-09-25 @ 9:00 pm -> 2026-09-26 @ 7:00 am |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Great Falls MT on 2026-09-25 @ 1:31 pm |
| Headline: | High Wind Warning issued September 25 at 12:31PM MDT until September 26 at 6:00AM MDT by NWS Great Falls MT |
| Description: |
* WHAT...West winds 30 to 40 mph with gusts up to 60 mph expected. * WHERE...Bears Paw Mountains and Southern Blaine. * WHEN...From 8 PM this evening to 6 AM MDT Saturday. * IMPACTS...Damaging winds will blow down trees and power lines. Widespread power outages are expected. Travel will be difficult, especially for high profile vehicles. |
| Alert: | High Wind Warning |
| Area(s): | Northern High Plains; Eastern Glacier, Western Toole, and Central Pondera; Southern High Plains |
| Effective: | 2026-09-25 @ 1:31 pm -> 2026-09-26 @ 4:45 am |
| Onset: | 2026-09-25 @ 6:00 pm -> 2026-09-26 @ 1:00 pm |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Great Falls MT on 2026-09-25 @ 1:31 pm |
| Headline: | High Wind Warning issued September 25 at 12:31PM MDT until September 26 at 12:00PM MDT by NWS Great Falls MT |
| Description: |
* WHAT...Westerly winds 30 to 50 mph, with gusts up to 70 mph expected. * WHERE...Eastern Glacier, Western Toole, and Central Pondera, Northern High Plains, and Southern High Plains. * WHEN...From 5 PM this afternoon to noon MDT Saturday. * IMPACTS...Travel could be difficult, especially for high profile vehicles. |
| Alert: | Wind Advisory |
| Area(s): | Kootenai/Cabinet Region; Flathead/Mission Valleys |
| Effective: | 2026-09-25 @ 8:17 am -> 2026-09-26 @ 1:00 am |
| Onset: | 2026-09-25 @ 3:00 pm -> 2026-09-26 @ 1:00 am |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Missoula MT on 2026-09-25 @ 8:17 am |
| Headline: | Wind Advisory issued September 25 at 7:17AM MDT until September 26 at 12:00AM MDT by NWS Missoula MT |
| Description: |
* WHAT...Southwest winds 15 to 25 mph with gusts up to 45 mph expected. * WHERE...Flathead/Mission Valleys and Kootenai/Cabinet Region. * WHEN...From 2 PM this afternoon to midnight MDT tonight. * IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. |
| Alert: | Wind Advisory |
| Area(s): | Missoula/Bitterroot Valleys |
| Effective: | 2026-09-25 @ 8:17 am -> 2026-09-26 @ 1:00 am |
| Onset: | 2026-09-25 @ 3:00 pm -> 2026-09-26 @ 1:00 am |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Missoula MT on 2026-09-25 @ 8:17 am |
| Headline: | Wind Advisory issued September 25 at 7:17AM MDT until September 26 at 12:00AM MDT by NWS Missoula MT |
| Description: |
* WHAT...West winds 15 to 25 mph with gusts up to 45 mph expected. * WHERE...Missoula/Bitterroot Valleys. * WHEN...From 2 PM this afternoon to midnight MDT tonight. * IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. * ADDITIONAL DETAILS...Strongest winds are expected west of Highway 93 through the Bitterroot valley. |
| Alert: | Lake Wind Advisory |
| Area(s): | Central and Southeast Phillips; Central and Southern Valley; Petroleum; Garfield; McCone |
| Effective: | 2026-09-25 @ 2:04 am -> 2026-09-26 @ 2:15 am |
| Onset: | 2026-09-25 @ 9:00 am -> 2026-09-26 @ 10:00 am |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Glasgow MT on 2026-09-25 @ 2:04 am |
| Headline: | Lake Wind Advisory issued September 25 at 1:04AM MDT until September 26 at 9:00AM MDT by NWS Glasgow MT |
| Description: |
* WHAT...South winds 15 to 25 mph with gusts up to 40 mph expected. * WHERE...Fort Peck Lake * WHEN...From 8 AM this morning to 9 AM MDT Saturday. * IMPACTS...Strong lake winds could produce rough waves which can overturn or swamp small craft. * ADDITIONAL DETAILS...Waves up to 4 feet will be possible. |
