"This incident is notable for its steady growth to 180 acres over a month, the sustained deployment of 2–4 personnel, and the significant estimated cost of $430,000, reflecting the resources required to manage a natural wildfire in a remote area."
The Porcupine wildfire, located 7 miles north of Clark Fork in Bonner County, Idaho, was discovered on July 25, 2026 and is a natural fire under USFS jurisdiction. The fire grew from 108 acres on August 11 to a peak of 180 acres by September 1, with no containment until September 8 when it reached 100% containment. Throughout the timeline, personnel fluctuated between 2 and 4, fire behavior remained largely minimal or moderate with occasional backing or flanking, and estimated costs rose from $350,000 to $430,000. The fire’s growth slowed after August 28, with acreage plateauing at 180 acres for several days before final containment.
Official source description: 7 Miles N from Clark Fork, ID
Minimal; Smoldering; Backing
Good air quality. Outdoor activity is generally safe near this incident.
Nearest reporting station: Sandpoint. Source: AirNow.gov (EPA).
The fire is currently fully contained and behaving minimally; general wildfire safety guidance applies, but residents should remain aware of potential smoke and ensure fire safety practices are followed.
IRWIN ID: {1D2500F1-9401-4668-8EEC-82D9181E4193}
Discovered: Jul 25, 2026
Cause: Natural
Managing Agency: USFS
Est. Cost to Date: $430,000
Coordinates: 48.251, -116.149
Other wildfires that have recently been contained or dropped from official tracking in ID.
The Porcupine Fire has burned 177 acres as of September 8, 2026.
Yes, the Porcupine Fire is fully contained (100%).
The official cause has been listed as: Natural.
The Porcupine Fire is burning in Bonner, ID.
Yes, as of the latest official update, the Porcupine Fire remains active.
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