2026 Stillwater County, Montana Wildfires
Newest wildfires in Stillwater County
Largest wildfires in Stillwater County this season
All 2026 Stillwater County Fires · 2 fires
A fire is listed here when it is located in Stillwater 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 Stillwater County, not its whole reported size. A fire located elsewhere that burned into Stillwater County is listed too, at its Stillwater County acres, and is not added to the Stillwater County fire counts. County lines come from a different boundary dataset than state lines, so Stillwater 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 |
|---|---|---|---|---|---|---|
| Windmill Fire | Aug 19, 2026 | 100% | Inactive | 4,239 of 4,253 | 45.8167, -109.5156 | 45.8339, -109.6161 |
| Ortiz Fire | Jul 28, 2026 | — | Inactive | 3 | 45.5276, -109.1371 | 45.0000, -109.0495 |
| Totals | 2026 Season Fires 2 | Active Fires 0 | Acres Burning 0 | 2026 Season Acres 4,242 |
Land cover · Stillwater County 2026
Burned acres in Stillwater County for the 2026 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 · Stillwater County 2026
Burned forest acres in Stillwater County for the 2026 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 · Stillwater County 2026
Burned acres in Stillwater County for the 2026 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.