The Arden Fire in Lucerne, Lake County, ignited near Highway 20 and quickly grew to 15 acres, threatening structures and prompting mandatory evacuations in multiple zones. Firefighters report moderate spread with potential to reach 50 acres.

The blaze is burning at a moderate rate of spread with a moderate risk to nearby structures, according to a Cal Fire spokesperson.

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.