Due to high winds and scorching temperatures above 100 degrees, the fire pushed out of control, jumping to both sides of the 14 Freeway and prompting evacuations, fire officials said.
The fire quickly jumped the freeway and has destroyed at least one structure.
Becerra says the Santa Clarita Valley Sheriff's Station's entire field force - 46 people - is also at the scene.
All lanes of a Los Angeles County freeway are closed as crews beat back a fast-moving wildfire burning near canyon homes.
The Los Angeles County Sheriff's Department says deputies are assisting residents living on Disney Ranch, Tenderfoot Trail Road, Running Horse Road and Placerita Canyon leave the area "out of an abundance of caution". No injuries are immediately reported.More news: England beat South Africa in Cardiff
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A auto crash sparked a fire in Santa Clarita that quickly spread to more than 800 acres Sunday afternoon, authorities said.
The fire, which was believed to have started from a traffic collision on the southbound 14 Freeway, near the Sierra Highway off-ramp just north of Placentia Canyon Road, was reported at 12:47 p.m., according to a Los Angeles County Fire Department dispatcher.
Los Angeles County Fire Department Supervising Fire Dispatcher Cheryl Sims said that structures are threatened, but gave no further information.
The fire is burning with no containment amid a heat wave in canyons about 30 miles north of downtown Los Angeles.
A half-acre brush fire that was ignited in Santa Clarita on Sunday quickly spread to 300 acres, firefighters said.