Active Wildfires
Bear Mountain WildfireMontana | 2026
Bear Mountain Wildfire is a reported wildfire in Sweet Grass, Montana. The latest available agency record reports 10 acres. The agency record was updated Sep 23, 2026, 12:54 PM ET. NASA FIRMS heat shown on the map is a separate satellite observation and is not automatically attributed to this incident.
Official incident summary
Reported acreage, containment, discovery and location from the available agency record.
Bear Mountain Wildfire map
The fire pin and blue ring mark this incident's reported point. They are not a fire boundary or evacuation zone.
About Bear Mountain Wildfire
WFIGS/NIFC gives Aug 27, 2026, 11:04 PM ET as the reported discovery date and time. The cause remains listed as "Undetermined", so this record does not establish a specific cause.
- Discovery
- Aug 27, 2026
- Reported cause
- Undetermined
Source note: assembled automatically by WildfireSignal from WFIGS/NIFC agency records, not on-scene reporting. Details describe the available record, not verified conditions right now. How we use this data.
What changed in the saved reports?
These are changes between saved records, not a measured spread rate. Decreases can reflect mapping corrections; unchanged figures do not prove conditions are unchanged.
Range: 10 to 10 acres. Exact values are in the snapshot table.
View saved snapshot table (26)
Collection begins when WildfireSignal first observes a record. Up to 48 recent observations are shown, within the existing 35-day retention window.
| Saved by WildfireSignal | Agency record updated | Reported acres | Containment | Feed presence |
|---|---|---|---|---|
| 10 | Not reported | In observed feed | ||
| 10 | Not reported | In observed feed | ||
| 10 | Not reported | In observed feed | ||
| 10 | Not reported | In observed feed | ||
| 10 | Not reported | In observed feed | ||
| 10 | Not reported | In observed feed | ||
| 10 | Not reported | In observed feed | ||
| 10 | Not reported | In observed feed | ||
| 10 | Not reported | In observed feed | ||
| 10 | Not reported | In observed feed | ||
| 10 | Not reported | In observed feed | ||
| 10 | Not reported | In observed feed | ||
| 10 | Not reported | In observed feed | ||
| 10 | Not reported | In observed feed | ||
| 10 | Not reported | In observed feed | ||
| 10 | Not reported | In observed feed | ||
| 10 | Not reported | In observed feed | ||
| 10 | Not reported | In observed feed | ||
| 10 | Not reported | In observed feed | ||
| 10 | Not reported | In observed feed | ||
| 10 | Not reported | In observed feed | ||
| 10 | Not reported | In observed feed | ||
| 10 | Not reported | In observed feed | ||
| 10 | Not reported | In observed feed | ||
| 10 | Not reported | In observed feed | ||
| 10 | Not reported | In observed feed |
Incident facts
- Reported location
- Sweet Grass, Montana
- Discovery
- Reported cause
- Undetermined
- Incident identifier
- 2026-MTLG40-261436
- Reported coordinates
- 46.2048, -109.7308
Optional facts appear only when present in the feed. Agency abbreviations and fuel-model labels are shown as reported, without guessing missing details.
Questions about Bear Mountain Wildfire
Where is Bear Mountain Wildfire?
The official incident record places it in Sweet Grass, Montana. The map pin is a reported location, not the full fire boundary.
How large is Bear Mountain Wildfire?
The latest available record reports 10 acres (approximately 4.0 hectares). This is reported incident size, not a measurement of current flames, and agencies can revise it.
How contained is Bear Mountain Wildfire?
Containment is not reported in the available record. Containment describes control work intended to stop spread. It is not the percentage extinguished or an all-clear for nearby communities.
When was Bear Mountain Wildfire discovered?
The reported discovery date is Aug 27, 2026, 11:04 PM ET. Discovery time may differ from ignition time; elapsed time does not establish continuous burning.
Where should I check evacuation orders and road closures?
Use local emergency management, the sheriff or other law enforcement, and official fire-agency updates. WildfireSignal does not verify evacuation zones, open roads, or safe travel routes. The official-information section provides starting points; it does not establish that orders are present or absent.
Why can the map and the incident report differ?
Agency records, mapped perimeters and NASA satellite detections are updated on different schedules. Satellite heat near a fire is not automatically attributed to that incident. Older or unavailable data does not establish that an area is safe.