Deep in the wilderness of North Cascades National Park, two lightning-caused fires are burning in terrain so rugged that direct suppression access is extremely limited. The Luna Fire and Border 2 Fire, both managed by the National Park Service, are being monitored closely by fire managers who are balancing suppression goals against the realities of remote, steep, and inaccessible terrain.
Luna Fire
The Luna Fire is burning approximately 10 miles north of Newhalem, Washington, in the North Cascades backcountry. As of July 27, 2026, the fire had grown to 125 acres with 0% containment. The fire is burning in a mix of subalpine forest and rocky terrain that limits ground crew access significantly. The National Park Service is using aerial reconnaissance to track the fire's perimeter and assess potential threats to wilderness infrastructure and trail systems.
Border 2 Fire
The Border 2 Fire is located approximately 20 miles northeast of Marblemount, Washington, near the U.S.-Canada border. It has grown to 325 acres with 0% containment. The fire's name reflects its proximity to the international boundary, and fire managers are coordinating with Canadian counterparts to monitor cross-border fire behavior potential.
Like the Luna Fire, Border 2 is burning in extremely remote terrain where ground attack is not feasible in many locations. Air tanker and helicopter operations have been assessed, but smoke conditions, terrain, and competing resource demands at higher-priority incidents have limited aerial intervention.
Backcountry Closures
North Cascades National Park has closed several backcountry zones and trail corridors near both fires. Visitors planning trips into the Newhalem backcountry, the Cascade Pass area, or northern sections of the park are strongly encouraged to check the park's website and contact the Wilderness Information Center in Marblemount for current closure maps and permit availability before heading out.
The park is also asking that hikers and backpackers in the affected drainages report any new smoke sightings to rangers immediately. With fire crews stretched thin across the region, early detection of new starts is critical.
Sinlahekin Fire: A New Threat in Okanogan County
Adding to Washington's fire burden, a new Sinlahekin Fire ignited and grew rapidly to 600 acres approximately 12 miles west of Tonasket in Okanogan County. The Washington Department of Natural Resources is managing the fire, which is listed at 0% containment. Okanogan County is no stranger to major wildfires — the region was devastated by the Carlton Complex in 2014 and the Okanogan Complex in 2015 — and local communities are well-versed in evacuation preparedness.
The DNR is assigning initial attack resources and has requested mutual aid as the fire's growth trajectory is assessed. Residents near Tonasket and in the Sinlahekin Valley should monitor Okanogan County emergency alerts and be prepared to leave quickly if evacuation orders are issued.
Staying Informed
For North Cascades National Park fire updates, visit nps.gov/noca. Washington DNR fire information is available at dnr.wa.gov. Okanogan County emergency alerts can be obtained by signing up through the county's emergency management office. All Washington residents in rural areas are encouraged to build and maintain an emergency go-bag and to have a family evacuation plan in place before they need it.