"The fire’s rapid growth to over 10,000 acres and the extensive resources—over 600 personnel and more than $26 million in estimated costs—highlight its significant impact on the region’s forested landscape and emergency response capacity."
The CROOKED wildfire, located 15 miles east of Idaho City in Boise County, Idaho, was first discovered on August 18, 2026. Human activity is the identified cause and the U.S. Forest Service is the jurisdictional agency. The fire rapidly expanded from 150 acres on August 20 to a peak of 10,018 acres on September 4, with a total of 10,081 acres burned by the time containment reached 100% on September 18. Containment progressed slowly, rising from 0% on August 20 to 21% by August 30, then to 30% by September 4, and finally achieving full containment after 98% containment on September 18. Personnel commitments peaked at 660 firefighters on September 4, and estimated costs climbed from $1,000,000 on August 20 to $26,180,000 by the final update.
Official source description: 15 Miles E from IDAHO CITY, ID
Minimal; Smoldering; Creeping; Short-range Spotting
Good air quality. Outdoor activity is generally safe near this incident.
Nearest reporting station: Idaho City. Source: AirNow.gov (EPA).
The fire is currently minimal, smoldering, and creeping with 100% containment. General wildfire safety guidance applies, but residents should remain aware of potential ember threats and follow any local advisories.
IRWIN ID: {25DCE742-0E0F-40E9-B7C7-9952FD1299A5}
Discovered: Aug 18, 2026
Cause: Human
Managing Agency: USFS
Est. Cost to Date: $26,180,000
Coordinates: 43.8472, -115.5396
Other wildfires that have recently been contained or dropped from official tracking in ID.
The CROOKED Fire has burned 10,081 acres as of September 18, 2026.
Yes, the CROOKED Fire is fully contained (100%).
The official cause has been listed as: Human.
The CROOKED Fire is burning in Boise, ID.
Yes, as of the latest official update, the CROOKED Fire remains active.
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