KERNVILLE, Calif. (AP) — An out-of-control wildfire in Southern California's Kern County has scorched about 5 square miles of dry brush and prompted evacuations in several neighborhoods.

U.S. Forest Service spokeswoman Cindy Thill said early Tuesday that the blaze burning near Lake Isabella northeast of Bakersfield expanded in several directions.

More than 450 firefighters with help from water-dropping aircraft are battling the flames in steep terrain amid low humidity and high temperatures. The fire has no containment.

Thill says residents of about 200 homes are under recommended evacuation orders. A Red Cross evacuation center is set up at Kern Valley High School in Lake Isabella.

Thill says some structures have burned, but it wasn't immediately clear how many or if any were homes.