"It's moving so fast, and the smoke is hugging the ground because of the intense wind, and it's hard to get a map," incident commander Norm Walker told reporters.
Nearly 2,800 people have so far been affected by evacuation orders, said an official with Los Angeles County Sheriff's Department.
Helicopters are helping firefighters by dropping retardant and water along the perimeter of the blaze.
Elsewhere in the western US, a fire north of Pecos, New Mexico, has scorched more than 7,400 acres and forced the evacuation of about 100 summer homes, said an official with New Mexico Fire Information.
That fire, known as the Tres Lagunas Fire, is reportedly “zero percent contained.”
A wind-driven wildfire in Southern California has grown to nearly 25,000 acres as hundreds of homes continue to be under evacuation orders.
The Powerhouse Fire, which continues to burn uncontained in the Palmdale area north of Los Angeles, is only about 20 percent contained, authorities say, adding that the fire has so far destroyed six homes and threaten as many as 1,000 more, local press reports said Sunday.