"This fire is notable for its rapid growth to over 105,000 acres and the significant resources committed—over 400 personnel at peak—resulting in a high estimated cost exceeding $21 million. The sustained containment progress demonstrates effective management of a large natural wildfire."
The Second Flat wildfire, located 6 miles northeast of Riley in Harney County, Oregon, was discovered on July 24, 2026 and is a natural fire under BLM jurisdiction. The blaze rapidly expanded to 105,464 acres by August 6, 2026, reaching 105,501 acres the following day, and then stabilized around 105,854 acres by August 19. Containment improved steadily from 76% on August 6 to 99% by August 24, with personnel fluctuating from 448 at the start to as few as 15 by late August. Fire behavior remained moderate or minimal throughout, with occasional creeping or smoldering activity, and the estimated cost rose from $11.9 million on August 7 to $21.6 million by late August. The incident remains active but largely contained, with minimal active behavior reported as of September 12.
Official source description: 6 Miles NE from Riley, OR
Minimal; Smoldering; Single Tree Torching
Good air quality. Outdoor activity is generally safe near this incident.
Nearest reporting station: Burns. Source: AirNow.gov (EPA).
Given the fire’s minimal current behavior and 99% containment, general wildfire safety guidance applies: stay informed of local updates, avoid outdoor activities near the fire perimeter, and be prepared for potential changes in fire behavior.
IRWIN ID: {D1885386-0825-4EB4-8BEC-B4C0274C5BBD}
Discovered: Jul 24, 2026
Cause: Natural
Managing Agency: BLM
Est. Cost to Date: $21,577,379
Coordinates: 43.6087, -119.4392
Other wildfires that have recently been contained or dropped from official tracking in OR.
The Second Flat Fire has burned 105,854 acres as of September 12, 2026.
As of the latest update, the Second Flat Fire is 99% contained.
The official cause has been listed as: Natural.
The Second Flat Fire is burning in Harney, OR.
Yes, as of the latest official update, the Second Flat Fire remains active.
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