The Rye fire in Santa Clarita was 65% contained. More than 10,000 structures are now threatened, and the number of destroyed homes and structures is expected to rise as fire personnel assess the full extent of damage.
Tens of thousands of residents forced to evacuate because of the Creek Fire in the hills above Sylmar were being allowed to return home Thursday night as firefighters continue to make progress against the wind-driven blaze.
The Creek fire has burned more than 15,000 acres and is 40 percent contained.
What sparked the Skirball Fire was not immediately determined.
The fire was burning in the same general area as the devastating Bel-Air Fire of 1961.
"We've always had fires, and it's always been one of those things, like, 'We'll be OK, '" said Virginia Padilla, Patricia's sister. It began at 3:43 a.m. PT, the Los Angeles County Fire Department said. The two fires were in addition to the largest blaze, the Thomas fire in Ventura that had destroyed more than 150 homes.
All three fires were driven by the strongest seasonal Santa Ana winds so far this year.
Situated on steep terrain near along the Sepulveda Pass, the Skirball Fire has destroyed 12 structures, some of which were large mansions situated near the Getty Center museum. Another firefighter suffered minor injuries.More news: Aztec High School Shooting Confirmed by Police
Evacuation orders first issued Tuesday were affecting about 110,000 households, according to Los Angeles Mayor Eric Garcetti.
Across the wide I-405 freeway from the fire, the Getty Center art complex was closed to protect its collection from smoke damage.
All Los Angeles Unified School District schools in the San Fernando Valley and some on the west side of Los Angeles - a total of 265 district schools and charter schools - were closed Thursday and will remain shuttered Friday.
Twenty-nine horses also died earlier this week in the Creek Fire, burning in the Los Angeles County city of Sylmar.
Mandatory evacuations remained in place Thursday for the area north of the 210 Freeway, from Glenoaks Boulevard to Haines Canyon Avenue, as well as south of the 210 Freeway, west of Sunland Boulevard and Stonehurst Avenue, and north of La Tuna Canyon Road.
Thousands of residents were under evacuation order.
A news reporter found a horse upside down at the bottom of a crevice while reporting on the Creek Fire that is spreading through California.