Chevron refinery in El Segundo engulfed by massive fire after explosion as blaze is seen across Los Angeles | 3 Oct 2025 | A massive explosion has triggered a huge fire ball at an oil refinery in Los Angeles on Thursday night. The blaze was seen for miles across the city after police said it ignited at the Chevron refinery in El Segundo. Terrifying images and videos posted by social media users show the night sky being engulfed by bright orange flames with smoke billowing toward the sky as witnesses recounted hearing a “sudden steady roar.” Live feeds from local news outlets show that units from the LA County Fire Department have gathered around the refinery, where flames are still visible. It remains unclear how the fire started.