SINLAHEKIN

All evacuation orders lifted as crews focus on suppression repair and patrol

The Sinlahekin Fire is burning in the Sinlahekin Valley west of Tonasket in Okanogan County. Over the last several days, fire activity remained minimal, with creeping and smoldering confined to heavy downed timber well inside the perimeter. The fire poses no immediate threat to nearby communities as crews prioritize suppression repair, line stabilization, and mop-up operations.

Evacuations and Closures

• All evacuation orders and warnings have been lifted as of September 20.

Impact

Residual smoke from interior smoldering continues to pool in low-lying valley areas during morning hours. County emergency management and recovery organizations are coordinating recovery support and disaster case management for affected residents and businesses.

Conditions and Outlook

Overcast conditions will continue across the fire area, with light to moderate winds shifting from south-southwesterly to east-southeasterly before easing later in the week alongside cooling temperatures, rising humidity, and a slight chance of drizzle. Fire behavior is expected to stay minimal, with crews carrying out chipping along the 39 Road, slash processing north of the 372 Road, line repairs in Salmon Meadows and Road 25, and road grading in Park Creek and along Toats Coulee Road while patrolling the northwest perimeter.

Cause and Context

The fire was ignited by lightning on July 26, 2026. Emergency response teams are actively evaluating the burn scar to identify and mitigate post-fire hazards, including soil erosion, runoff, and debris flows.

Official updates current through September 21, 2026.