Big Grass Fire map & updates
The Big Grass Fire burned in Malheur County, OR (25 Miles SW from JORDAN VALLEY, OR). Final reported size 578,637 acres, 100% contained.
Big Grass Fire map
Shaded area: the latest mapped fire perimeter (2026-09-18). Dot: point of origin. Sources: NIFC WFIGS incident record and interagency perimeters. Official evacuation orders come from the county — this map doesn't show them.
Where is the Big Grass Fire?
| Nearest cities | Distance from origin |
|---|---|
| Nampa, ID | 72 mi |
| Caldwell, ID | 77 mi |
| Meridian, ID | 81 mi |
| Boise City, ID | 87 mi |
| Twin Falls, ID | 145 mi |
| Elko, NV | 149 mi |
Straight-line distance from the point where the fire started, protecting agency: BLM.
Timeline
- Discovered — July 23, 2026
- Contained — September 12, 2026
- Controlled — September 29, 2026
- Latest mapped perimeter — September 18, 2026
- Record last updated — October 1, 2026
Other large fires within 25 miles
| Fire | Acres | Year | From this fire |
|---|---|---|---|
| Mustang Fire | 12,547 | 2026 | 7 mi |
| Butte Fire | 4,912 | 2025 | 11 mi |
| Rock Creek Fire | 31,960 | 2025 | 16 mi |
| Little John Fire | 12,973 | 2025 | 15 mi |
| Soldier Creek Fire | 11,061 | 2024 | 10 mi |
| Drummond Basin Fire | 2,410 | 2019 | 14 mi |
| Jackies Butte Fire | 2,230 | 2018 | 12 mi |
| Jaca Reservoir Fire | 13,460 | 2015 | 6 mi |
Wildfires of 1,000+ acres since 2014 whose origin was within 25 miles (NIFC WFIGS).
Other Oregon fires in 2026
Questions
Where is the Big Grass Fire?
In Malheur County, OR, 25 Miles SW from JORDAN VALLEY, OR. The nearest city in our list is Nampa, ID, about 72 miles from where the fire started.
How big is the Big Grass Fire?
578,637 acres (about 904 square miles) by the latest reported size.
Is the Big Grass Fire contained?
It was reported 100% contained.
What caused the Big Grass Fire?
The cause is recorded as natural. Causes often stay undetermined until the investigation closes.
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