Some 28 fire-engines, two helicopters and 150 personnel are involved in the effort to battle the blazes which have already consumed about 1,600 acres so far.
The fires are burning west of Maxwell, California, an hour's drive from the state capital, Sacramento.
Last month a wildfire forced some forcing 32,000 people from their homes, prompting evacuations and swallowing numerous houses at the edge of Colorado Springs.
Contains video from Reuters
