Yellowstone National Park, Wyoming
Regional Weather Alerts
| Alert: | Red Flag Warning |
| Area(s): | Eastern Beaverhead National Forest |
| Effective: | 2026-09-01 @ 11:22 am -> 2026-09-03 @ 9:00 pm |
| Onset: | 2026-09-02 @ 1:00 pm -> 2026-09-03 @ 9:00 pm |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Missoula MT on 2026-09-01 @ 11:22 am |
| Headline: | Red Flag Warning issued September 1 at 10:22AM MDT until September 3 at 8:00PM MDT by NWS Missoula MT |
| Description: |
...RED FLAG WARNING IN EFFECT FROM NOON WEDNESDAY TO 8 PM MDT THURSDAY DUE TO WIND AND LOW RELATIVE HUMIDITY FOR EAST BEAVERHEAD... .Strong southwest winds will develop Wednesday as a cold front tracks eastward and stalls along the Continental Divide. Winds will peak each afternoon and early evening. Winds will remain elevated Wednesday night, especially across midslopes and ridgetops, with poor humidity recoveries. The National Weather Service in Missoula MT has issued a Red Flag Warning in effect from noon Wednesday to 8 PM MDT Thursday. * AFFECTED AREA...Fire Weather Zone 111. * TIMING...From noon Wednesday to 8 PM MDT Thursday. * WINDS...Southwest winds 30 to 40 mph with gusts up to 50 mph. * RELATIVE HUMIDITY...Relative Humidity between 20 to 30 percent. * IMPACTS...Any fires that develop will spread rapidly. Outdoor burning is not recommended. |
| Alert: | High Wind Watch |
| Area(s): | Madison River Valley |
| Effective: | 2026-08-31 @ 11:19 pm -> 2026-09-01 @ 7:00 pm |
| 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 @ 11:19 pm |
| Headline: | High Wind Watch issued August 31 at 10:19PM 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 60 mph possible. * WHERE...Madison River Valley. * WHEN...From Wednesday afternoon through Thursday evening. * IMPACTS...Damaging winds could blow down trees and power lines. Travel could be difficult, especially for high profile vehicles. * ADDITIONAL DETAILS...Wind speeds will decrease to between 20 to 30 mph from the late evening hours on Wednesday through the mid-morning hours on Thursday before increasing once again. |