2025 Sanders County, Montana Wildfires
Newest wildfires in Sanders County
Largest wildfires in Sanders County this season
All 2025 Sanders County Fires · 7 fires
A fire is listed here when it is located in Sanders County. Each complex is counted once, through its parent: the parent carries the complex's acres, and its member fires are listed beneath it without being counted again. A fire that crossed a county line is listed with the acres that burned in Sanders County, not its whole reported size. A fire located elsewhere that burned into Sanders County is listed too, at its Sanders County acres, and is not added to the Sanders County fire counts. County lines come from a different boundary dataset than state lines, so Sanders County's acres are counted along county lines and can differ a little at the edges from the figures on the state page.
| Fire | Start date | Containment | Status | Acres | Center | Ignition point |
|---|---|---|---|---|---|---|
| Knowles Fire | Aug 19, 2025 | 100% | Inactive | 3,816 | 47.3688, -114.6948 | 47.3543, -114.7405 |
| Isabella and Lost Girl Fires | Sep 8, 2025 | 0% | Inactive | 1,696 of 1,720 | 48.1230, -115.6790 | — |
| Isabella Fire | Sep 1, 2025 | 100% | Inactive | 1,411 | 48.1228, -115.6819 | 48.1094, -115.6770 |
| Lost Girl Fire | Sep 1, 2025 | — | Inactive | 309 | 48.1162, -115.7031 | 48.1128, -115.7106 |
| Banana Lake Fire | Jun 2, 2025 | 100% | Inactive | 833 | 47.5150, -114.8400 | — |
| Mile Marker 91 Fire | Aug 17, 2025 | 100% | Inactive | 308 | 47.3461, -114.6613 | — |
| Little Seepay Fire | Aug 17, 2025 | — | Inactive | 9 | 47.3407, -114.6391 | — |
| Sage Fire | Sep 14, 2025 | — | Inactive | 0 | 47.8286, -115.6721 | 47.8257, -115.6711 |
| Crow Creek Fire | Aug 20, 2025 | — | Inactive | 0 | 47.5337, -115.5554 | 47.5295, -115.5405 |
| Also burned into Sanders County | ||||||
| Ulm Creek Fire from Shoshone County | Sep 2, 2025 | 10% | Inactive | 60 of 2,929 | 47.8869, -115.9789 | 47.9102, -116.0152 |
| Totals | 2025 Season Fires 7 | Active Fires 0 | Acres Burning 0 | 2025 Season Acres 6,722 | ||
Land cover · Sanders County 2025
Burned acres in Sanders County for the 2025 season, split by the kind of land that burned. Each figure counts the LANDFIRE 30 m cells inside a fire's latest mapped perimeter. The Fires tab carries the reported season acreage.
Forest ownership · Sanders County 2025
Burned forest acres in Sanders County for the 2025 season, split by who owns the land. Owners are mapped for forestland, so every figure here counts burned cells whose LANDFIRE lifeform is Tree. The Fires tab carries the season acreage this site reports.
Burn severity · Sanders County 2025
Burned acres in Sanders County for the 2025 season, split by how severely each cell of ground burned. Each figure counts the 30 m cells inside a fire's latest mapped perimeter, measured from satellite imagery. The Fires tab carries the reported season acreage.
Severity comes from the differenced normalized burn ratio (dNBR), the same index the federal burn severity programs publish, classified with the standard thresholds.
This is an initial assessment. Trees keep dying for months after a burn, so severity in forest reads conservative until the official assessments arrive after the season.