"This fire is notable for its rapid containment progress—achieving 89% containment within 23 days—despite moderate early behavior and the deployment of up to 173 personnel. The escalating estimated cost reflects the resources required to manage even a relatively small 17‑acre fire."
The BACKBONE wildfire, located 7 miles northeast of Packwood in Lewis County, Washington, was discovered on August 5, 2026 and is a natural fire under USFS jurisdiction. It burned a total of 17 acres and remained at 0% containment until August 23, when containment first rose to 20%. Over the next week containment increased steadily, reaching 89% by August 28 and 90% by September 9, while personnel numbers fluctuated from 173 at the start to 34 by the latest update. Fire behavior remained moderate (backing, creeping, spotting) until August 30, when it shifted to minimal smoldering, and has stayed minimal since. The estimated cost rose from $2,958,963 on August 20 to $7,253,525 by September 9.
Official source description: 7 Miles NE from Packwood, WA
Minimal; Smoldering; Creeping; Spotting
The fire is currently minimal and smoldering with 90% containment. General wildfire safety guidance applies, but no evacuation or immediate action is required at this time.
IRWIN ID: {9957ED4A-F55B-457F-BE0D-9A2FF0373891}
Discovered: Aug 5, 2026
Cause: Natural
Managing Agency: USFS
Est. Cost to Date: $7,253,525
Coordinates: 46.7034, -121.5935
Other wildfires that have recently been contained or dropped from official tracking in WA.
The BACKBONE Fire has burned 17 acres as of September 9, 2026.
As of the latest update, the BACKBONE Fire is 90% contained.
The official cause has been listed as: Natural.
The BACKBONE Fire is burning in Lewis, WA.
No, the BACKBONE Fire is no longer listed as active by NIFC.
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