Updated

Cooler temperatures and lighter winds are helping hundreds of firefighters combat a 3,000-acre wildfire that has blackened rugged terrain in the Los Padres National Forest.

The fire that broke out Wednesday quickly charred 3,000 acres of dry, thick trees, despite a heavy aerial effort to beat back flames in the largely unpopulated area.

The blaze was 10 percent contained early Thursday.

No structures were threatened although a high school has been evacuated as a precaution. No injuries have been reported.

The fire near Interstate 5 through Frazier Park, where Kern and northern Los Angeles counties meet, could be fanned by winds that could reach up to 35 mph Thursday.

The cause of the fire is under investigation.