The North Fork Lost Horse wildfire in Montana has been active since July 25, 2026, and is currently 20% contained with 156 personnel on site.
Official source description: 10 Miles NW from Darby, MT
Minimal; Creeping; Smoldering; Backing
No specific advice based on the current fire behavior and evacuation status.
IRWIN ID: {4E04440D-FEA1-4FC8-B961-F35F1D3BDF42}
Discovered: Jul 25, 2026
Cause: Natural
Managing Agency: USFS
Est. Cost to Date: $2,805,000
Coordinates: 46.162, -114.337
The North Fork Lost Horse Fire has burned 118 acres as of August 9, 2026.
As of the latest update, the North Fork Lost Horse Fire is 20% contained.
The official cause has been listed as: Natural.
The North Fork Lost Horse Fire is burning in Ravalli, MT.
Yes, as of the latest official update, the North Fork Lost Horse Fire remains active.
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