Big Grass Fire

Malheur County, Oregon · Wildfire

Active Official numbers updated Aug 16, 2026 (1 day ago)
First reported about 4 weeks ago
Metric Now
Size
578,448 acres
Aug 17, 11:00 AM
−3,778 acres
was 582,226 acres · Aug 15, 8:01 PM
Containment
72%
Aug 17, 11:00 AM
+17 percent
was 55% · Aug 15, 8:01 PM
Crew size
1,050
Aug 17, 11:00 AM
+44
was 1,006 · Aug 15, 8:01 PM
Money spent
$53.3M
Aug 17, 11:00 AM
+$1.3M
was $52.0M · Aug 15, 8:01 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 578,448 acres (about 438,000 football fields). Crews have boxed in 72% of its edge; the other 28% isn't contained yet. It was first reported about 4 weeks ago. About 1,050 people are on it, run by a Complex Incident Management Team. We're also tracking 5 other active fires within about 75 miles.

Size
578,448 acres
Containment
72%
Discovered
July 23, 2026 (first reported about 4 weeks ago)
Cause
Not reported

The size and containment above are current as of Monday, August 17th at 11:00 a.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.

Today

87°F · Partly Sunny

Wind 5 to 8 mph W · 9% chance of rain

Wind: Calm Heat: Warm Dry

Tonight

60°F · Mostly Cloudy

Wind 5 to 9 mph W · 11% chance of rain

Wind: Calm Heat: Cool Dry

Tuesday

88°F · Partly Sunny

Wind 6 to 10 mph W · 0% chance of rain

Wind: Breezy Heat: Warm Dry

Tuesday Night

59°F · Partly Cloudy

Wind 7 to 13 mph NNE · 0% chance of rain

Wind: Breezy Heat: Cool Dry

Wednesday

90°F · Mostly Sunny

Wind 6 mph SW · 0% chance of rain

Wind: Calm Heat: Hot Dry

Forecast from the National Weather Service (weather.gov), pulled Monday, August 17th at 11:03 a.m. CDT.

Who's on it

About 1,050 people are assigned to this fire, run by a Complex Incident Management Team. The government rates it a Type 1 Incident (the highest complexity level). About $53 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 5 other active fires, closest first:

See all active fires in Oregon →

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