Big Grass Fire (Oregon)
True color
Fire (SWIR)
Infrared / SWIR (right): sees through smoke.
🟢 green = vegetation
🟤 red/brown = burned
🟠 orange = active fire
Imagery: Sentinel-2 (Copernicus). Drag to compare smoke vs. infrared.
Heat detections: NASA FIRMS (last 48h).
Quick facts
- Location
- 25 Miles SW from JORDAN VALLEY, OR
- Cause
- Natural
- Personnel
- 226
- Complexity
- Type 3 Incident
- Fuel
- Short Grass (1 foot)
- Behavior
- Minimal, Torching, Creeping, Flanking
- Jurisdiction
- BLM · Federal land
Burning across Malheur County, Oregon, the active Big Grass Fire has now scorched 578,637 acres of federal land since its natural ignition on July 23, 2026. Managed by a Type 3 Incident Command under the Bureau of Land Management with 403 personnel assigned, the incident has reached 94 percent containment after 38 days of burning, averaging an extensive growth rate of approximately 15,227 acres per day.
Fueled by short grass measuring one foot, current fire behavior on the ground involves minimal activity alongside torching, smoldering, and flanking. The overall financial investment to combat the fire has reached $74,307,019.
This major blaze unfolds within a broader regional context where Oregon's typical fire season spans from June to October. Across the country, 3,133,897 hectares have burned so far in 2026, marking a total that remains 43 percent below the two-decade average.
In context
This wildfire has been burning in Oregon for 46 days. So far it has affected roughly 578,637 acres — about 2,342 km². At 94% containment, the fire is nearly under control.
In the Northern Hemisphere, wildfire activity usually peaks during the warm, dry months — roughly May through October.
The bigger picture in United States
Across United States, roughly 3,185,593 hectares have burned so far in 2026 — 42% below the two-decade average. Data from Copernicus GWIS.
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