The Sinlahekin Fire was reported on July 26, 2026, approximately 12 miles west of Tonasket, Washington. It is a lightning-caused fire burning across state, federal, and private lands in Okanogan County.
The fire is part of multiple active wildfires in the region, including the Sisi Fire, Little Giant Fire, and Goat Fire, all managed by the Okanogan-Wenatchee National Forest. The Sinlahekin Fire's perimeter is still being monitored, with no containment percentage reported as of the latest update on September 7, 2026.