Yellowstone National Park, Wyoming
Regional Weather Alerts
| Alert: | Red Flag Warning |
| Area(s): | Dawson/McCone/Prairie/Richland/Wibaux Counties; Southern Petroleum and Southern Garfield Counties |
| Effective: | 2026-09-09 @ 1:56 pm -> 2026-09-10 @ 5:00 am |
| Onset: | 2026-09-10 @ 1:00 pm -> 2026-09-10 @ 9:00 pm |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Glasgow MT on 2026-09-09 @ 1:56 pm |
| Headline: | Red Flag Warning issued September 9 at 12:56PM MDT until September 10 at 8:00PM MDT by NWS Glasgow MT |
| Description: |
The National Weather Service in Glasgow has issued a Red Flag Warning, which is in effect from noon to 8 PM MDT Thursday. The Fire Weather Watch is no longer in effect. * WIND...WEST AT 10 TO 20 WITH GUSTS TO 30 MPH. * HUMIDITY...AS LOW AS 11 PERCENT. * IMPACTS...Any fires that develop can spread rapidly. Outdoor burning is not recommended. |
| Alert: | Red Flag Warning |
| Area(s): | Sioux Ranger District Custer National Forest |
| Effective: | 2026-09-09 @ 11:21 am -> 2026-09-10 @ 11:30 am |
| Onset: | 2026-09-10 @ 1:00 pm -> 2026-09-10 @ 9:00 pm |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Billings MT on 2026-09-09 @ 11:21 am |
| Headline: | Red Flag Warning issued September 9 at 10:21AM MDT until September 10 at 8:00PM 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 8 PM MDT Thursday. * IMPACTS: Low humidities, unseasonably warm temperatures, and strong gusty winds will create erratic fire behavior. * AFFECTED AREA: In Southeast MT and Northwest SD Fire Zone...133. * COUNTIES AFFECTED: In Northwest SD...Harding. In Southeast MT...Carter...Fallon. * WIND: West 10 to 20 mph with gusts up to 35 mph. * HUMIDITY: As low as 12 percent. * TEMPERATURES: Up to 90. |
| Alert: | Red Flag Warning |
| Area(s): | Gallatin National Forest; Wheatland County/Sweet Grass County; Golden Valley County/Musselshell County |
| Effective: | 2026-09-09 @ 11:21 am -> 2026-09-10 @ 11:30 am |
| Onset: | 2026-09-10 @ 1:00 pm -> 2026-09-10 @ 9:00 pm |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Billings MT on 2026-09-09 @ 11:21 am |
| Headline: | Red Flag Warning issued September 9 at 10:21AM MDT until September 10 at 8:00PM MDT by NWS Billings MT |
| Description: |
The National Weather Service in Billings has upgraded the Fire Weather Watch to a Red Flag Warning...which is in effect from noon to 8 PM MDT Thursday. * IMPACTS: Low humidities, unseasonably warm temperatures, and strong gusty winds will create erratic fire behavior. * AFFECTED AREA: In South Central MT Fire Zones...123...124...127. * COUNTIES AFFECTED: In Central MT...Golden Valley...Musselshell...Wheatland. In South Central MT...Park...Sweet Grass. In Southwest MT...Gallatin. * WIND: West 15 to 25 mph with gusts up to 40 mph. * HUMIDITY: As low as 10 percent. * TEMPERATURES: In the 80s. * ADDITIONAL DETAILS: The worst conditions are expected across lower elevations that have received little precipitation in the past week. |
| Alert: | Red Flag Warning |
| Area(s): | Eastern Beaverhead National Forest |
| Effective: | 2026-09-09 @ 10:59 am -> 2026-09-09 @ 7:00 pm |
| Onset: | 2026-09-10 @ 1:00 pm -> 2026-09-10 @ 10:00 pm |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Missoula MT on 2026-09-09 @ 10:59 am |
| Headline: | Red Flag Warning issued September 9 at 9:59AM MDT until September 10 at 9:00PM MDT by NWS Missoula MT |
| Description: |
...RED FLAG WARNING IN EFFECT FROM NOON TO 9 PM MDT THURSDAY DUE TO WIND AND LOW RELATIVE HUMIDITY FOR EAST BEAVERHEAD... The National Weather Service in Missoula MT has issued a Red Flag Warning. * AFFECTED AREA...Fire Weather Zone 111. * TIMING...From noon to 9 PM MDT Thursday. * WINDS...Southwest winds 10 to 20 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...Relative Humidity between 10 to 15 percent. * IMPACTS...Any fires that develop will spread rapidly. Outdoor burning is not recommended. |
