A fast-growing wildfire near the northern California town of Weaverville forced the evacuation of about 150 homes and is threatening about 500 additional residences, authorities said on Monday.
The fire about two miles (3.2 kilometres) west of Weaverville was also threatening about 20 businesses and facilities, including the town airport and high school, according to a spokeswoman with the California Governor's Office of Emergency Services.
The fire was sparked on Sunday afternoon near Highway 299, the main road into town, and rapidly grew to a little more than one square mile, or 650 acres, a state fire spokesman said.
Footage broadcast by ABC showed firefighters struggling to contain the blaze on Sunday due to the steep terrain and gusty winds that were fuelling the flames.
Weaverville, at the base of the Trinity Alps Wilderness area in Trinity County, was a Gold Rush-era boom town in far northern California.