LOS ANGELES—A rare summer thunderstorm brought lightning that sparked several small blazes in Northern California on Sunday and stoked a huge wildfire that has forced hundreds of people from their homes north of Los Angeles.
More than 4,500 buildings remained threatened by the fire burning toward thick, dry brush in the Angeles National Forest. Firefighters already battling the blaze in steep, rugged terrain with scorching heat faced more hurdles when hundreds of lightning strikes and winds up to 15 mph pushed the flames uphill.
