"The rapid expansion from 10 to 59 acres within 48 hours highlights a significant growth rate for a newly discovered wildfire, warranting attention from firefighting resources and local authorities."
The Marmot Peak wildfire, located in Sanders County, Montana, was first discovered on September 21, 2026, and is currently active under the jurisdiction of the U.S. Forest Service. The fire has grown from 10 acres at the initial report on September 22 to 50 acres 40 minutes later, and reached 59 acres by September 23, with no containment reported at any point in the timeline. The cause is identified as human, but no additional details are provided. The fire behavior, personnel, weather conditions, evacuation status, and estimated cost remain unspecified in the available data.
Moderate air quality. Unusually sensitive individuals should consider reducing prolonged outdoor exertion.
Nearest reporting station: Thompson Falls. Source: AirNow.gov (EPA).
General wildfire safety guidance applies; remain aware of potential fire spread and follow any official advisories or evacuation orders.
IRWIN ID: {26C43851-C26F-4555-B831-1B3F906FAF5D}
Discovered: Sep 21, 2026
Cause: Human
Managing Agency: USFS
Coordinates: 47.7427, -115.2318
Other wildfires that have recently been contained or dropped from official tracking in MT.
The Marmot Peak Fire has burned 59 acres as of September 23, 2026.
The Marmot Peak Fire has not yet reached any official containment.
The official cause has been listed as: Human.
The Marmot Peak Fire is burning in Sanders, MT.
Yes, as of the latest official update, the Marmot Peak Fire remains active.
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