2025 Sanders County, Montana Wildfires

United States › Montana › Sanders County

0 Active Fires
0 Acres Burning
7 2025 Season Fires ▲ +5 vs same period last year
6,722 2025 Season Acres ▲ +4,966 vs same period last year

Newest wildfires in Sanders County

Sep 14 Started Sage Fire
Sep 8 Started 1,720 acres 2.0x the size of Central Park Isabella and Lost Girl Fires
Sep 1 Started 1,411 acres Slightly larger than Lincoln Park Isabella Fire
Sep 1 Started 309 acres 238 football fields Lost Girl Fire
Aug 20 Started Crow Creek Fire
Aug 19 Started 3,816 acres 3.2x the size of Lincoln Park Slightly smaller than JFK Airport Knowles Fire

Largest wildfires in Sanders County this season

3,816 Acres 3.2x the size of Lincoln Park Slightly smaller than JFK Airport Knowles Fire Polson
1,720 Acres 2.0x the size of Central Park Isabella and Lost Girl Fires Libby
833 Acres About the size of Central Park Banana Lake Fire Plains
308 Acres 237 football fields Mile Marker 91 Fire Plains
9 Acres 7 football fields Little Seepay Fire Hot Springs

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.

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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

Search Fires

🔥 Sage Fire 2025
Started: Sep 14 0 acre
Near Mullan, Idaho · Sanders County, Montana
🔥 Isabella and Lost Girl Fires Complex 2025
Started: Sep 8 1,720 acre 0% contained
Near Libby · Sanders County, Montana
🔥 Isabella Fire Complex Member 2025
Started: Sep 1 1,411 acre 100% contained
Near Pioneer Junction · Sanders County, Montana
🔥 Lost Girl Fire Complex Member 2025
Started: Sep 1 309 acre
Near Pioneer Junction · Sanders County, Montana
🔥 Crow Creek Fire 2025
Started: Aug 20 0 acre
Near Thompson Falls · Sanders County, Montana
🔥 Knowles Fire 2025
Started: Aug 19 3,816 acre 100% contained
Near Polson · Sanders County, Montana
🔥 Mile Marker 91 Fire 2025
Started: Aug 17 308 acre 100% contained
Near Plains · Sanders County, Montana
🔥 Little Seepay Fire 2025
Started: Aug 17 9 acre
Near Hot Springs · Sanders County, Montana
🔥 Banana Lake Fire 2025
Started: Jun 2 833 acre 100% contained
Near Plains · Sanders County, Montana