Five zones in Los Angeles County are under evacuation orders, with 2,700 residents evacuated and 700 structures threatened by the flames, officials said. Six other zones in this county are currently under an evacuation warning, with 1,400 residents and 5,000 structures at risk, officials said.

Authorities warned that the fire is spreading fast due to extreme heat and dry conditions in Southern California.

The Canyon fire broke out around 2 p.m. near Holser Canyon Road, northeast of Piru. By Thursday night, it was pushing east toward Castaic and Interstate 5.