An evacuation order has been issued for all of Lake Piru Recreation Area and east to the Los Angeles County line, south to SR 126, west to Center Street.

Firefighters Friday were trying to make progress after the Canyon fire exploded to nearly 5,000 acres, forcing residents in northern Los Angeles and Ventura counties to evacuate.

The Canyon fire grew within hours to almost 5,000 acres as it spread into Los Angeles County, officials said. Firefighters in Southern California were working to contain a rapidly growing wildfire in Ventura County on Thursday that prompted the authorities to order thousands of residents to leave the area.