Thousands of structures at risk in northern California wildfire

Thousands of structures were threatened and hundreds of people fled their homes ahead of a wildfire ravaging in a section of the Eldorado National Forest north of Sacramento, federal officials said on Friday. Firefighters have been able to carve containment lines around 12 percent of the so-called Trailhead Fire, which started on Tuesday afternoon and has grown to blacken 2,151 acres, U.S. Forest Service spokeswoman Jennifer Chapman said. The wildfire is moving slowly through mixed conifer and hardwood in the forest about 65 miles north of the state's capitol toward more favorable terrain for the roughly 2,000 fire personnel battling the blaze, Chapman said.