The pace of new fire ignitions across the Pacific Northwest and northern Rockies accelerated sharply on August 2, with seven new large fires reported in a single day. These latest incidents are adding to an already strained national firefighting system and underscoring how broadly the 2026 fire season has spread across the region.

New Large Fires Reported August 2

Idaho: Moose Mountain Fire

The Moose Mountain Fire ignited in the Nez Perce-Clearwater National Forest, approximately 4 miles north of Kelly Forks Campground. Managed by the USFS Nez Perce-Clearwater unit, the fire grew quickly to 320 acres with zero percent containment as of the latest report. The fire is burning in the rugged backcountry of north-central Idaho in an area that presents significant access challenges for firefighters. The Cascade Fire (432 acres, 0% contained) and Wolf Creek Fire (160 acres, 0% contained) are also actively burning in the same forest.

Montana: Sand Creek and Middle Coulee Fires

Two new fires emerged in Montana on August 2. The Sand Creek Fire ignited in the Beaverhead-Deerlodge National Forest, 7.5 miles southeast of Wisdom, and grew quickly to 1,000 acres with zero containment. The Middle Coulee Fire ignited 4 miles north of Carter in Chouteau County, reaching 500 acres with zero percent containment. Montana now has nine active large fires, including the Silvertip Fire (6,029 acres, 0% contained) on the Flathead National Forest and the Elder 1 Fire (1,221 acres, 40% contained) on the Lolo National Forest near Frenchtown.

Southern Oregon: I-5 Corridor Fire

The I-5 MM 57 NB Fire ignited along the Interstate 5 corridor in southern Oregon, immediately prompting concerns about transportation disruption and infrastructure protection. The fire is being managed by the Oregon Department of Forestry Medford Unit. Fires adjacent to major highway corridors create acute challenges — they threaten traffic safety, complicate evacuation routing, and can spread rapidly through roadside fuels.

Ongoing Significant Incidents

Beyond the new ignitions, several fires reported earlier this season continue to demand significant resources:

  • Upper Smith Fire (Idaho Panhandle NF) — 2,191 acres, 40% contained, 6 miles west of Porthill on the Canadian border
  • Silvertip Fire (Flathead NF, MT) — 6,029 acres, 0% contained, 30 miles northeast of Condon
  • Ant Park Fire (Helena-Lewis and Clark NF, MT) — 700 acres, 0% contained, near White Sulphur Springs
  • Castle Fire (Umpqua NF, OR) — 2,613 acres, 22% contained, 23 miles northeast of Tiller

Dispatch and Initial Attack Resources

The volume of simultaneous ignitions is placing extraordinary demands on the initial attack system. Smokejumpers, single-engine airtankers, and initial attack crews are being dispatched to new ignitions even as large fire organizations continue to draw on the same national resource pool.

NIFC notes that the national firefighting system is "heavily committed," meaning that initial attack response times for new ignitions may be longer than typical as resources are redirected from one incident to another. Local fire managers are prioritizing incidents threatening structures and populated areas.

Residents in rural areas of Idaho, Montana, and southern Oregon are urged to report new smoke immediately by calling 911 and to avoid outdoor burning or any activity that could start a fire during this critical period.