Nature Grove Fire
Active
Ravalli County, Montana · Discovered August 23, 2026
Source: NIFC/IRWIN (interagency) · Last upstream update 6 days ago · Perimeter mapped 6 days ago (NIFC WFIGS)
Nature Grove Fire
The Nature Grove Fire fire has burned 1,422 acres in Ravalli County, Montana. Crews have reached 0% containment. It has shown no measurable growth in the last 24 hours. Air quality near the fire is moderate (AQI 58). 5 personnel are assigned to the incident.
Latest official update
August 23, 2026The Nature Grove Fire was detected Aug. 23, 2026, at 4:44 p.m.The Nature Grove Fire, caused by lightning, was detected by a local helicopter after a smoke report was received in the Skalkaho drainage south of Black Bear campground. This fire was growing fast. Aircrews conducted water drops and retardant drops since this fire was detected. Several engines were on scene with various overhead assigned. The fire is located approximately one half mile from Black Bear Campground, south of Highway 38. There was significant smoke in the Skalkaho drainage area. This was a rapidly emerging incident.…
Read the full update on InciWebPosted by the incident management team on InciWeb (inciweb.wildfire.gov).
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Incident timeline
Generated automatically from official feeds the moment they change: size, containment, evacuation zones, aircraft, and incident team updates.
New perimeter mapped at 1,422 acres (national perimeter feed)
29 days ago · September 9, 2026Grew 148 acres in 48 hours to 1,422 acres
34 days ago · September 3, 2026Grew 133 acres in 24 hours to 1,274 acres
36 days ago · September 1, 2026Grew 150 acres in 47 hours to 1,141 acres
37 days ago · August 31, 2026Grew 136 acres in 24 hours to 991 acres
39 days ago · August 30, 2026Grew 555 acres in 7 hours to 855 acres
40 days ago · August 29, 2026Mapped size revised down to 300 acres (from 676)
40 days ago · August 28, 2026Grew 126 acres in 24 hours to 676 acres
41 days ago · August 28, 2026Grew 250 acres in 46 hours to 550 acres
42 days ago · August 27, 2026Grew 125 acres in 10 hours to 300 acres
44 days ago · August 25, 2026Grew 25 acres in 13 hours to 175 acres
44 days ago · August 24, 2026Grew 50 acres in 2 hours to 150 acres
45 days ago · August 24, 2026Official incident page published on InciWeb: Nature Grove Fire
45 days ago · August 24, 2026Grew 95 acres in 2 hours to 100 acres
45 days ago · August 24, 2026Fire first listed in official incident feeds at 5 acres
45 days ago · August 23, 2026
Raw growth & containment readings
| Recorded | Size | Contained |
|---|---|---|
| 9/3/2026, 11:34:25 PM | 1,422 acres | 0% |
| 9/1/2026, 11:45:54 PM | 1,274 acres | 0% |
| 8/31/2026, 11:27:39 PM | 1,141 acres | 0% |
| 8/30/2026, 12:06:36 AM | 991 acres | 0% |
| 8/29/2026, 12:29:33 AM | 855 acres | 0% |
| 8/28/2026, 5:31:10 PM | 300 acres | 0% |
| 8/28/2026, 12:04:37 AM | 676 acres | 0% |
| 8/27/2026, 3:38:22 PM | 300 acres | 0% |
| 8/27/2026, 12:01:24 AM | 550 acres | 0% |
| 8/26/2026, 1:38:19 AM | 300 acres | 0% |
| 8/25/2026, 11:41:37 PM | 297 acres | 0% |
| 8/25/2026, 2:24:15 AM | 300 acres | 0% |
| 8/25/2026, 2:14:18 AM | 175 acres | 0% |
| 8/25/2026, 12:59:11 AM | 153 acres | 0% |
| 8/24/2026, 4:39:27 PM | 175 acres | 0% |
| 8/24/2026, 2:59:19 PM | 100 acres | 0% |
| 8/24/2026, 3:30:24 AM | 150 acres | 0% |
| 8/24/2026, 1:27:40 AM | 100 acres | - |
| 8/23/2026, 11:50:32 PM | 5.0 acres | - |
Recorded by Fire Nearby each time upstream data changes.
About this data
Fire Nearby aggregates official incident data and shows exactly when each value was last updated. For evacuation decisions, always follow instructions from local emergency officials and check county emergency management channels.