Campgrounds have been evacuated near a Central California wildfire that has chewed through more than 2 square miles of dry timber in Sierra National Forest, one of several blazes burning across the state.

The fire in a rural area of Madera County was just 5 percent contained late Sunday. Officials say about 450 structures in the tiny wooded communities of Bass Lake and Cascadel Woods are threatened. Residents have been notified to prepare to evacuate.

To the north, four firefighters were burned Sunday while battling a wildfire that threatens 150 homes in the Sierra Nevada foothills. All are expected to recover.

The fire erupted Saturday 45 miles northeast of Sacramento. The area is rural, rugged and steep with homes scattered throughout the trees.

A wildfire near Napa Valley wine country is 70 percent contained.