Scenes from the Mendocino Complex fire

Firefighter Rob Gore from Canberra, Australia, mans a lookout point while battling the Mendocino Complex Fire.

Firefighters battling the Mendocino Complex blaze monitor a burn operation on top of a ridge near the town of Ladoga on Aug. 7.

Firefighters monitor a burn operation on top of a ridge near the town of Ladoga.

Embers smoulder along a hillside after the Ranch Fire, part of the Mendocino Complex Fire, burned though the area near Clearlake Oaks, California, on August 5, 2018. - Several thousand people have been evacuated as various fires swept across the state, although some have been given permission in recent days to return to their homes.  (Noah Berger / Associated Press)

LODOGA, CALIF. -- WEDNESDAY, AUGUST 8, 2018: The charred remains after the Ranch Fire, one of two wildfires in the Mendocino Complex fire burned through an area in the wilderness of Mendocino National Forest near Lodoga, Calif., on Aug. 8, 2018.   (Marcus Yam / Los Angeles Times)

A layer of smoke fills the air as the Mendocino Complex fire burns in the wilderness of Mendocino National Forest near Lodoga, Calif., on Aug. 8, 2018.  (Marcus Yam / Los Angeles Times)

A fisherman wears a mask while fishing from his boat as smoke from the Mendocino Complex fire covers Clear Lake, on Aug. 8, 2018.  (Marcus Yam / Los Angeles Times)

Fire retardant covers mailboxes in Lakeport, Calif., as crews work to contain the Mendocino Complex Fire on Wednesday, Aug. 8, 2018. Firefighters said Wednesday that they have made good progress battling the state’s largest-ever wildfire but didn’t expect to have it fully under control until September.   (Noah Berger / Associated Press)