Isabella Fire
The Isabella Fire was reported on September 1, 2025 in Sanders County, Montana and burned 1,411 acres. It was declared out on December 11, 2025. The cause is listed as natural.
- Size
- 1,411 acres
- Contained
- 100%
- Discovered
- September 1, 2025
- Personnel
- 5
Map
Perimeter mapped December 12, 2025 at 10:55 AM MST, 1,411 acres (ir image interpretation). Point of origin 48.123, -115.679.
The incident
- Size
- 1,411 acres
- Containment
- 100%
- Discovered
- September 1, 2025 at 7:15 AM MDT
- Contained
- November 24, 2025 at 11:00 AM MST
- Controlled
- November 24, 2025 at 12:00 PM MST
- Declared out
- December 11, 2025 at 12:00 PM MST
- Cause
- Natural
- Location
- 10 Miles NW from Noxon, MT
- County
- Sanders County
- State
- Montana
- Protecting agency
- USFS
- Jurisdiction
- USFS
- Land ownership at origin
- USFS
- Personnel assigned
- 5
- Incident management
- Type 3 IC, Type 3 Incident
- Primary fuel
- Closed Timber Litter
- Estimated cost to date
- $950,000
- Incident type
- Wildfire
- Unique fire identifier
- 2025-MTKNF-000324
- IRWIN identifier
- 4DE8001E-F267-4E74-A2E4-F04B7D19BE81
Growth
Mapped area at the last perimeter of each day, from September 5, 2025 (406 acres) to December 12, 2025 (1,411 acres). The largest one-day growth was 214 acres, mapped September 9, 2025.
| Day | Acres | Change |
|---|---|---|
| September 5, 2025 | 406 | |
| September 7, 2025 | 457 | +51 |
| September 9, 2025 | 671 | +214 |
| September 11, 2025 | 770 | +99 |
| September 12, 2025 | 813 | +43 |
| September 14, 2025 | 858 | +45 |
| September 17, 2025 | 869 | +11 |
| September 19, 2025 | 895 | +26 |
| September 21, 2025 | 986 | +91 |
| September 23, 2025 | 1,077 | +91 |
| September 24, 2025 | 1,095 | +18 |
| September 25, 2025 | 1,161 | +66 |
| September 26, 2025 | 1,250 | +89 |
| September 27, 2025 | 1,394 | +144 |
| December 12, 2025 | 1,411 | +17 |
Weather in the area
This fire is no longer listed as current. The forecast for Pioneer Junction, MT covers the area today.
Nearby
Montana wildfires today Wildfires of 2025 All current fires
Incident record from the National Interagency Fire Center’s Wildland Fire Interagency Geospatial Services (WFIGS), as the incident’s managers report it; last updated December 12, 2025 at 10:55 AM MST. Identifier 2025-MTKNF-000324.