The Big Grass Fire burning along the Oregon-Idaho border has grown to approximately 579,169 acres and reached 85% containment as of this week, according to fire officials — but embers continue to jump established containment lines and significant pockets of heat remain within the fire's interior. The fire is approaching Oregon's all-time largest wildfire record of 557,028 acres, set by the 2012 Long Draw Fire in the same general region.
Fire Overview
The Big Grass Fire is burning in Malheur County, Oregon, approximately 25 miles southwest of Jordan Valley, and extending into Owyhee County, Idaho. The fire ignited amid extreme heat and low-humidity conditions in early August and exploded in size over multiple days of critical fire weather, driven by strong winds and exceptionally dry grass fuels in the high desert country of southeastern Oregon.
At its current size, the Big Grass Fire is one of the largest active wildfires in the United States and among the largest in Oregon history. The fire has consumed rangelands, sagebrush steppe, and working agricultural lands across the Oregon-Idaho borderlands.
Containment Challenges
Despite progress toward containment, fire officials have warned that the battle is not over. Strong winds — including localized dust devils — have been carrying embers past established fire lines into unburned areas, requiring rapid response from crews already working long shifts. Finding and extinguishing hidden heat pockets within the vast interior of the fire remains a top operational priority.
Dry thunderstorms that swept across Malheur and Owyhee counties earlier this month sparked several new smaller fires as crews worked to manage the main event, complicating resource allocation across the region.
Evacuation Status
Level 3 "Go Now" evacuation orders remain in effect for areas south of Jordan Valley in Oregon. The evacuation zone has been reduced somewhat on the Idaho side, with some southwestern Idaho residents allowed to return, though officials urge caution and compliance with all remaining restrictions.
Ranchers and agricultural producers in the area have faced significant losses of rangeland, fencing, and in some cases livestock. The full scope of agricultural and economic damage from the Big Grass Fire is still being assessed.
Historical Context
The Big Grass Fire joins a troubling pattern of increasingly large fires in Oregon's high desert country. The 2012 Long Draw Fire — which held the state record at 557,028 acres — burned in nearly the same landscape, driven by similar conditions of drought, heat, and abundant fine fuels. Fire ecologists note that the sagebrush-steppe ecosystem, while adapted to periodic fire, is now experiencing fire return intervals far shorter than historical norms, threatening the recovery of native vegetation and the ranching economies that depend on it.
Officials from the Bureau of Land Management and Oregon Department of Forestry, the primary agencies managing the Big Grass Fire response, say they expect to achieve full containment within the coming week if conditions allow, but caution that continued hot and windy weather could reverse progress at any time.
Residents in the Jordan Valley area are encouraged to monitor the Malheur County Emergency Management page and sign up for Code Red emergency alerts. Level 3 evacuation orders require immediate departure — do not wait and watch.