"The wildfire’s rapid growth to over 13,000 acres in just a few days and the deployment of 70 personnel highlight its significant impact on the region’s resources and the urgency of containment efforts."
The MUSTANG wildfire, located in Malheur County, Oregon, was first discovered on August 25, 2026, and is caused by natural ignition under the jurisdiction of the BLM. The fire expanded rapidly, growing from 60 acres at discovery to 5,000 acres by August 26, then to 13,379 acres by August 27, before stabilizing. Containment remained at 0% until August 27 when 30% containment was achieved, and the fire was fully contained at 100% by August 28, with a final acreage of 13,379. Personnel peaked at 70 on August 27, and the estimated cost rose from $300,000 to $370,000 before settling at $390,000. The fire behavior shifted from extreme, running, flanking to moderate, smoldering, flanking as containment progressed.
Official source description: 28 Miles SE from JORDAN VALLEY, OR
Moderate; Smoldering; Flanking
Good air quality. Outdoor activity is generally safe near this incident.
Nearest reporting station: Boise. Source: AirNow.gov (EPA).
The fire is now fully contained and behaving moderately; standard wildfire safety precautions remain advised, but no immediate evacuation or fire danger restrictions are necessary.
IRWIN ID: {CEBCE581-7882-4EF7-88C4-EFDDB82FBE93}
Discovered: Aug 25, 2026
Cause: Natural
Managing Agency: BLM
Est. Cost to Date: $390,000
Coordinates: 42.6672, -117.4428
Other wildfires that have recently been contained or dropped from official tracking in OR.
The MUSTANG Fire has burned 12,547 acres as of September 2, 2026.
Yes, the MUSTANG Fire is fully contained (100%).
The official cause has been listed as: Natural.
The MUSTANG Fire is burning in Malheur, OR.
No, the MUSTANG Fire is no longer listed as active by NIFC.
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