These fires merged and rapidly spread southeast on July 17, burning approximately 300 homes in and around the towns of Pateros and Malott as well as in more rural areas.

[6] The Carlton Complex was the largest wildfire in Washington state's recorded history, surpassing the 1902 Yacolt Burn.

It required the closure of U.S. Route 2 and the evacuation of nearly 900 homes, threatening the communities of Coles Corner, Winton, and Plain.

Covering 12,659 acres (20 sq mi; 51 km2), the Duncan fire was located in the upper Entiat River drainage.

[9] Located in the Boulder Creek drainage northeast of Stehekin, the Lone Mountain fire burned 2,770 acres (4.3 sq mi; 11 km2).

[12][13] This fire was reported on August 7 on the Wenatchee National Forest southwest of Cle Elum in Kittitas County and burned 894 acres (1.4 sq mi; 3.6 km2).