Three wildfires have burned more than 3,500 acres this week in Southern California and triggered evacuation orders and warnings for tens of thousands of residents in Ventura and Riverside counties. The fires blanketed widespread parts of the region with smoke,

Multiple wildfires have ignited in Southern California in recent days, as investigators examine unusual possible ignition sources.

There are currently seven wildfires burning around Southern California, some of which are threatening homes and prompting evacuations. The largest of the ongoing wildfires is the Santa Rosa Fire on Santa Rosa Island in Channel Islands National Park,

More than 17,000 people are under evacuation orders as a wildfire continues to threaten suburban homes in Southern California.

The threat of a chemical tank exploding in Southern California has dwindled, but other risks remain, Orange County fire officials said.

The Sandy Fire in Ventura County comes as authorities also battle the Burro Fire and Santa Rosa Island Fire. See size, containment and fire maps.

A rapidly spreading wildfire in California has sparked evacuation orders and several celebrity homes are at risk.

The Sandy Fire broke out Monday morning in Ventura County, California, burning nearly more than 800 acres and prompting evacuation orders in parts of Simi Valley and Thousand Oaks.

A fast-burning wildfire prompted evacuations and is threatening homes in the Simi Valley area of Ventura County in Southern California.