Multiple fires are raging in Southern California. A series of Santa Ana wind-driven wildfires have destroyed hundreds of structures, forced thousands to flee and smothered the region with smoke in what officials predicted would be a pitched battle for days.

Track the latest key details of each major fireWatch live coverage from KNBC | Follow Times reporters and authorities on Twitter | See photos of the fires: Bel-Air; Ventura County; Sylmar and Santa Clarita | Share your story, photos and video

Map: New fires threaten structures in Riverside and San Diego counties

 (Joe Fox / Los Angeles Times)
(Joe Fox / Los Angeles Times)

The Lilac fire, which began Thursday afternoon near the 15 Freeway and Highway 76, was threatening 1,000 structures and had grown to 500 acres by 1 p.m., according to Cal Fire San Diego.

The Liberty fire has forced evacuations in Murrieta and has grown to 220 acres, according to Cal Fire Riverside. 

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