Big Grass Fire

Malheur County, Oregon · Wildfire

Active Official numbers updated Sep 5, 2026 (1 day ago)
First reported about 7 weeks ago
Metric Now
Size
578,637 acres
Sep 6, 9:00 PM
+3 acres
was 578,634 acres · Aug 22, 8:00 PM
Containment
94%
Sep 6, 9:00 PM
+1 percent
was 93% · Aug 29, 6:00 PM
Crew size
226
Sep 6, 9:00 PM
−6
was 232 · Sep 5, 4:00 PM
Money spent
$77.9M
Sep 6, 9:00 PM
−$142,628
was $78.0M · Sep 5, 4:00 PM

Big Grass Fire and other nearby fires

🔥 Where this fire started Mostly contained Partly contained Containment not reported

Drag or zoom the map to see more fires in the area.

Big Grass Fire summary

The Big Grass Fire is a wildfire near Malheur County, Oregon. It has burned about 578,637 acres (about 438,000 football fields). Crews have boxed in 94% of its edge; the other 6% isn't contained yet. It was first reported about 7 weeks ago. About 226 people are on it, run by a Type 3 IC. We're also tracking 3 other active fires within about 75 miles.

Size
578,637 acres
Containment
94%
Discovered
July 23, 2026 (first reported about 7 weeks ago)
Cause
Not reported

The size and containment above are current as of Sunday, September 6th at 9:00 p.m. CDT.

Weather & fire-spread conditions

No Red Flag Warning. The National Weather Service hasn't flagged this area for dangerous fire-spread conditions right now.

Hot, dry, and windy weather can help a fire grow; cool, calm, or wet weather helps crews. The tags below rate each day for fire spread — green is calm, red can push a fire.

A general fire-weather guide (wind matters most, then how dry it is, then heat), not a prediction of what this fire will do.

Tonight

41°F · Showers And Thunderstorms Likely then Mostly Cloudy

Wind 6 to 20 mph W · 69% chance of rain

Wind: Windy Heat: Cool Rain likely

Labor Day

64°F · Sunny

Wind 8 mph W · 0% chance of rain

Wind: Calm Heat: Cool Dry

Monday Night

43°F · Mostly Clear

Wind 7 mph ENE · 0% chance of rain

Wind: Calm Heat: Cool Dry

Tuesday

72°F · Sunny

Wind 1 to 8 mph E · 0% chance of rain

Wind: Calm Heat: Cool Dry

Tuesday Night

48°F · Mostly Clear

Wind 8 mph ENE · 0% chance of rain

Wind: Calm Heat: Cool Dry

Forecast from the National Weather Service (weather.gov), pulled Sunday, September 6th at 9:03 p.m. CDT.

Who's on it

About 226 people are assigned to this fire, run by a Type 3 IC. The government rates it a Type 3 Incident. About $78 million has been spent on it so far.

The official feed reports the total headcount, not a breakdown by crew type.

Where to get live updates

We show the daily official picture. For minute-by-minute updates, evacuation orders, and maps, these do it best:

Nearby fires to Big Grass Fire

Within about 75 miles we're tracking 3 other active fires, closest first:

See all active fires in Oregon →

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