Yellowstone National Park, Wyoming
Regional Weather Alerts
| Alert: | High Wind Watch |
| Area(s): | Madison River Valley |
| Effective: | 2026-08-31 @ 1:28 pm -> 2026-09-01 @ 4:30 am |
| Onset: | 2026-09-02 @ 1:00 pm -> 2026-09-03 @ 10:00 pm |
| Severity: | Severe |
| Certainty: | Possible |
| Urgency: | Future |
| Issued By: | NWS Great Falls MT on 2026-08-31 @ 1:28 pm |
| Headline: | High Wind Watch issued August 31 at 12:28PM MDT until September 3 at 9:00PM MDT by NWS Great Falls MT |
| Description: |
* WHAT...South winds 30 to 40 mph with gusts up to 55 mph possible. * WHERE...Madison River Valley. * WHEN...From Wednesday afternoon through Thursday evening. * IMPACTS...Damaging winds could blow down trees and power lines. Widespread power outages are possible. Travel could be difficult, especially for high profile vehicles. * ADDITIONAL DETAILS...Wednesday night into Thursday morning winds will decrease. Winds will increase again Thursday afternoon/evening. |
| Alert: | Fire Weather Watch |
| Area(s): | Eastern Beaverhead National Forest |
| Effective: | 2026-08-31 @ 11:31 am -> 2026-09-01 @ 4:15 pm |
| Onset: | 2026-09-02 @ 1:00 pm -> 2026-09-03 @ 1:00 am |
| Severity: | Severe |
| Certainty: | Possible |
| Urgency: | Future |
| Issued By: | NWS Missoula MT on 2026-08-31 @ 11:31 am |
| Headline: | Fire Weather Watch issued August 31 at 10:31AM MDT until September 3 at 12:00AM MDT by NWS Missoula MT |
| Description: |
...FIRE WEATHER WATCH IN EFFECT FROM WEDNESDAY AFTERNOON THROUGH WEDNESDAY EVENING DUE TO WIND AND LOW RELATIVE HUMIDITY FOR EAST BEAVERHEAD... The National Weather Service in Missoula MT has issued a Fire Weather Watch. * AFFECTED AREA...Fire Weather Zone 111. * TIMING...From Wednesday afternoon through Wednesday evening. * WINDS...Southwest winds 20 to 30 mph with gusts up to 45 mph. * RELATIVE HUMIDITY...Relative Humidity between 20 to 35 percent. * IMPACTS...Any fires that develop will spread rapidly. Outdoor burning is not recommended. |
| Alert: | Lake Wind Advisory |
| Area(s): | Central and Southeast Phillips; Central and Southern Valley; Petroleum; Garfield; McCone |
| Effective: | 2026-08-31 @ 12:32 am -> 2026-08-31 @ 7:00 pm |
| Onset: | 2026-08-31 @ 7:00 am -> 2026-08-31 @ 7:00 pm |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Glasgow MT on 2026-08-31 @ 12:32 am |
| Headline: | Lake Wind Advisory issued August 30 at 11:32PM MDT until August 31 at 6:00PM MDT by NWS Glasgow MT |
| Description: |
* WHAT...West winds 15 to 25 mph with gusts up to 40 mph expected. * WHERE...Fort Peck Lake. * WHEN...From 6 AM to 6 PM MDT Monday. * IMPACTS...Strong winds and rough waves on area lakes will create hazardous conditions for small craft. * ADDITIONAL DETAILS...Expect wave heights up to 4 feet. |