, which expanded to within a couple of hours. On the morning of September 11, the Forest Service was continuing to manage the two fires as separate incidents within the larger complex, due to the immense size of the complex's burn area. The Doe Fire in the August Complex was officially referred to as the "August Complex South Zone", which was and 25 percent contained, while the Elkhorn Fire was being managed as the "August Complex North Zone", which was still at and 27 percent contained, giving the overall complex an area of and 25 percent containment. The western portion of the Elkhorn Fire was further designated as the "August Complex West Zone", which was managed by CAL FIRE. On September 11, the southwestern flank of the South Zone continued pushing further west into Mendocino County. An evacuation order was issued for areas east of Covelo. Due to the rapid fire spread and thick smoke in the area, officials had trouble estimating the actual size of the fire. On September 13, the fire was thought to have reached . By September 15, the burn area had been revised to , as better mapping data became available. Most firefighting activity was concentrated in the Lake Pillsbury area on the South Zone, in an effort to stop the fire from advancing further west. Back-burns and mop up operations were continued on the north and east perimeters to strengthen the fire lines there. At this time the fire was 30 percent contained. On the North Zone, the fire continued advancing north, jumping the South Fork Trinity River and advancing towards State Route 36. Firefighters were working to save homes around the Ruth Lake area. On September 16, it was reported that 35 structures were destroyed, and 400 were still threatened. On the South Zone, the fire continued spreading through the Yuki Wilderness and Sanhedrin Wilderness. On the North Zone, firefighting efforts were focused on stopping the advance north of the South Fork Trinity River. On September 18, evacuations were lifted in the Glenn County portion of the Mendocino National Forest, as the eastern flank of the fire was almost fully contained. On September 19, some evacuations in Mendocino County were also downgraded to an evacuation warning. Firefighters conducted back-burns west and northwest of Lake Pillsbury. The entire August Complex was at and was 31 percent contained, with the fire spreading on its southwestern