Idaho is managing seven active large fires as of September 11, 2026, placing the state among the most fire-affected in the country this season. The fires span a range of landscapes from the dry foothills of the Snake River Plain to the rugged backcountry of central Idaho, testing the resources of both state and federal land management agencies.

Season Context

Idaho has experienced above-normal fire activity throughout the summer, consistent with the broader regional pattern of extreme heat and drought across the Intermountain West. Central and southern Idaho are specifically called out in the NIFC September-December outlook as areas with above-normal potential for large wildfires persisting through the end of the year — meaning the current seven-fire load could grow if weather conditions return to extreme.

Big Grass Fire Extends into Idaho

The largest fire touching Idaho this season is the Big Grass Fire, which originated in Malheur County, Oregon, and extended across the state line into Owyhee County, Idaho. The fire has burned a combined 578,637 acres across both states and is 94% contained as of early September. The Big Grass Fire illustrates how major fire events in the West routinely cross jurisdictional boundaries, requiring coordinated response from multiple state and federal agencies simultaneously.

Resource Demand and Coordination

The Great Basin Geographic Area Coordination Center works in coordination with the Northwest Coordination Center to manage resource requests and logistics for Idaho fires. As the state sits at the boundary between the two geographic areas, fire incidents in Idaho often draw resources from both coordination zones, adding complexity to an already stretched supply chain.

International crews from Australia and New Zealand currently assigned to the Northwest and Great Basin areas may be supporting some Idaho incidents, according to the most recent NIFC situation report.

Preparedness Advice for Idaho Residents

Idaho residents in fire-prone communities are urged to remain vigilant as the fire season extends into autumn:

  • Sign up for local emergency alerts through your county emergency management office.
  • Maintain at least 30 feet of defensible space around structures, and zone 2 clearance out to 100 feet where terrain allows.
  • Have a go-bag ready and a predetermined family evacuation plan and meeting point.
  • Check road closures and fire restrictions before traveling in or near forest and rangeland areas.
  • Monitor the Idaho Department of Lands fire information portal and InciWeb for incident updates.

With the NIFC outlook projecting elevated fire potential through December in central and southern Idaho, land managers and communities should treat autumn preparedness with the same urgency typically reserved for the peak of summer fire season.