As of Friday morning, the Hill Fire had charred 6,100 acres in the Camarillo area, while the Woolsey Fire had blackened 14,000 acres and destroyed a significant number of structures after starting in Woolsey Canyon east of Simi Valley, according to the Ventura County Fire Department.
The blaze has spread rapidly overnight, fanned by strong winds, and has jumped Highway 101, a major route west of Los Angeles.
A 1,500-acre fire burning near Suisun City in Solano County has not prompted evacuation orders or threatened structures.
The Woolsey Fire triggered a mandatory evacuation order for the entire beachside city of Malibu.
"Please, please, please if you are asked to voluntarily leave the area, please do", Ventura County fire Capt. Scott Dettore told CNN affiliate KTLA on Friday morning. Downey posted a photo of billowing smoke shortly after 9 a.m. and said she was leaving her home off the Pacific Coast Highway with her two dogs in tow. She and her husband eventually were able to drive away safely. In Southern California there are now two fires in Ventura and Los Angeles Counties threatening structures and forcing evacuations.
Caitlyn Jenner's Malibu house has reportedly burned down in the Woolsey Fire. Meanwhile, the Hill Fire, located just down the road from the Thousand Oaks bar where 12 people were killed earlier this week in a mass shooting, has topped 10,000 acres.
Earlier, the fire devastated the town of Paradise in the Sierra foothills, home to 26,000 people. The highway is expected to remain closed Friday morning, Ventura County Fire Chief Mark Lorenzen said.
Residents took to social media to share their views of the flames almost consuming the hillside in Newbury Park, which borders Thousands Oaks to the west.
Strong winds blow smoke horizontally over the the Santa Monica Mountains and the Pacific Ocean over the city of Malibu, far distance, in Southern California, seen from the Pacific Palisades area of Los Angeles Friday morning, November 9, 2018. The north and southbound lanes of the 101 freeway near Santa Rosa Road.
Under dry, Santa Ana conditions, once again California is ablaze.
Fire crews Thursday morning were dealing with 40 miles per hour wind gusts.
Winds calmed in some areas and intensified in others Friday morning, National Weather Service forecasts show.