1978 Agoura-Malibu firestorm
The 1978 Agoura-Malibu firestorm was a firestorm fueled by at least eight significant wildfires in the Los Angeles area on October 23, 1978. At around noon that day, an arsonist started a fire that eventually burned 25,000 acres (10,000 ha) from Cornell to Broad Beach in Malibu.
Source: Wikipedia — 1978 Agoura-Malibu firestorm (CC BY-SA 4.0)