"This incident is notable for its large size—over 105,000 acres—and the significant resources committed, including nearly 500 personnel and an estimated cost exceeding $21 million. The fire’s containment trajectory, moving from 76% to 99% within a month, demonstrates effective suppression efforts in a remote area."
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. By August 6, it had burned 105,464 acres and was 76% contained, with 448 personnel on the scene. Over the next month the fire grew slightly to 105,501 acres, reached 86% containment by August 9, and then stabilized around 105,854 acres with 95-99% containment by late August. Personnel numbers fluctuated from 448 at the start to a low of 15 by late August, while estimated costs rose from $11.9 million to $21.6 million. The fire’s behavior remained moderate to minimal, with occasional creeping and smoldering activity, and it has largely been contained with minimal active spread.
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).
The fire is currently minimal in behavior and 99% contained. Residents in the vicinity should remain vigilant for any sudden changes, but general wildfire safety guidance applies.
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 16, 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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