Slough Grass Fire
The Slough Grass Fire was reported on August 6, 2026 in Rosebud County, Montana and burned 5,465 acres. It was fully contained on August 9, 2026. The cause is listed as natural.
- Size
- 5,465 acres
- Contained
- 100%
- Discovered
- August 6, 2026
- Personnel
- 69
Map
Perimeter mapped August 8, 2026 at 1:41 PM MDT, 5,644 acres (mixed methods). Point of origin 45.753, -106.805.
The incident
- Size
- 5,465 acres
- Containment
- 100%
- Discovered
- August 6, 2026 at 3:22 PM MDT
- Contained
- August 9, 2026 at 12:30 PM MDT
- Cause
- Natural
- Location
- 8 Miles NW from Colstrip, MT
- County
- Rosebud County
- State
- Montana
- Protecting agency
- C&L
- Jurisdiction
- DNRC
- Land ownership at origin
- State
- Personnel assigned
- 69
- Incident management
- Type 3 IC, Type 3 Incident
- Primary fuel
- Timber (Grass and Understory)
- Estimated cost to date
- $500,000
- Incident type
- Wildfire
- Unique fire identifier
- 2026-MTLG29-000661
- IRWIN identifier
- A0D9B680-54D9-4943-A878-2D3F0E7A7D22
Growth
Mapped area at the last perimeter of each day, from August 7, 2026 (6,400 acres) to August 19, 2026 (5,644 acres).
| Day | Acres | Change |
|---|---|---|
| August 7, 2026 | 6,400 | |
| August 19, 2026 | 5,644 | -756 |
Weather in the area
This fire is no longer listed as current. The forecast for Muddy, MT covers the area today.
Nearby
Montana wildfires today Wildfires of 2026 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 August 9, 2026 at 7:29 PM MDT. Identifier 2026-MTLG29-000661.