A series of active wildfires burning across California have torched more than 22,000 acres combined as firefighters battle dangerous conditions in at least six major blazes stretching from Santa Barbara County to San Diego County.

Californians in multiple regions are being urged to stay alert as multiple, fast-moving wildfires force widespread evacuations, with thousands already displaced and more communities at risk. Shelters are under pressure,

Photos showed structures ablaze in Simi Valley, California.

More than 33,000 people remain under evacuation orders after a brush fire broke out in Simi Valley, Calif. By Soumya Karlamangla and Amy Graff A fast-moving brush fire in a suburban community north of Los Angeles destroyed one home on Monday and threatened thousands more,

Cal Fire is preparing for a potentially active wildfire season as California faces dry vegetation heading into the summer.

Firefighters are racing to keep flames away from the Santa Susana Field Laboratory, a former nuclear and rocket testing site.