The Cougar Creek fire in Chelan County has improved to 71 percent containment and remains over 40,000 acres in size.
While the size has grown to 42,412 acres, the containment percentage has steadily increased over the week.
Crews say fire spread was minimal on Wednesday. Helicopters continue to drop water on the area to support containment efforts by firefighters. Firefighters patrolled hand line near Signal Peak on Wednesday, and the line is holding.
Mop up operations, infrared imaging to find hot spots, and patrolling are continuing along completed line on the western perimeter. The southern and eastern areas of the fire are secure, and firefighters are conducting mop up, backhaul, and repair work, such as road grading.
There is currently 438 personnel on scene.