Approximately 200 firefighters are on the scene of wildland fire near Upper Lake in Lake County that has burned an estimated 450 acres.
Kathleen Hie, a spokeswoman for the California Department of Forestry and Fire Protection, said the fire started shortly before 3 p.m. at 12536 Elk Mountain Road, near Mount Dinger Road. It was reported burning in grass, oak woodland and brush.
As of 7:30 p.m., officials said the fire was 20 percent contained. No structures were threatened.
The Lake County Sheriff’s Office ordered mandatory evacuations for all residents on White Rock Canyon Road, and those who live near White Rock Canyon Road were advised to be prepared to evacuate.
The Sheriff’s Office reported that an evacuation staging area was being set up at Upper Lake County Park. Evacuees were advised to go to the park to receive information regarding resources available to them.
The cause of the fire has not been determined.
Air tankers and helicopters are assisting firefighters.