A fire broke out at a Chevron oil refinery just outside Los Angeles on Thursday night, sending towering flames into the air that were visible for miles. AdvertisementOfficials in El Segundo, California, urged people to stay indoors. By early Friday, the fire was contained and there was no threat to public safety, the city said in a statement. Residents near the Chevron El Segundo Refinery described feeling a rumble, then they saw the flames. The El Segundo police and fire departments did not immediately comment on the fire, which appeared to have erupted suddenly.