The entire town of Paradise, Calif. was scorched, with more than a thousand buildings destroyed.
In Southern California, the night sky burned orange as the Woolsey Fire in Los Angeles and Ventura counties grew thousands of acres overnight, exploding from 2,000 acres to 7,500 in a matter of hours.
Parts of the city have been evacuated, as firefighters struggle to contain the inferno at the city limits.
Some residents have evacuated to the parking lot of popular Zuma Beach.
While no homes or businesses have been lost due to the fast-moving fire, a number of RVs and outbuildings have been burned and a firefighter suffered a minor injury, authorities said.
The Woolsey Fire appeared to be the more risky of the two blazes, and was burning south through the Kanan Road corridor toward Malibu and the ocean.
OES Director Mark Ghilarducci said in Friday's press briefing that state agencies are still working toward assessments of damage and losses.
Some structures have already been destroyed, Cal Fire reported.
The fire near the Northern California town of Paradise has grown to almost 110 square miles (285 square kilometers).
He expects to encounter extremely unsafe conditions in Malibu, as the Santa Ana winds blowing out to sea hit on-shore winds from the ocean. "Mandatory evacuations are now in place for all of Malibu, including unincorporated areas".
Fire officials initially ordred the evacuation of all 13,000 residents of the community, which stretches 21 miles along the ocean, but later scaled it back to the western two-thirds of the city.
Firefighters from Ventura and Los Angeles counties also continue to battle the Woolsey Fire under a unified command as it burns toward the coast.
Wildfires raging west of Los Angeles have forced school closures. Pepperdine University in Malibu also canceled classes. The Calabasas campus is also evacuated.
A former US Marine combat veteran opened fire in a bar packed with college students in the town on Wednesday night, killing 12 people and stunning a leafy community with a reputation for safety.
Thousands Oaks lies about a 30-minute drive away from the north end of Malibu.
Thousands were evacuated, including from schools and hospitals.
The Woolsey Fire broke out about 2:25 p.m. Thursday in Ventura County west of Chatsworth, pushed by strong Santa Ana winds.
Both fires erupted Thursday afternoon and have grown rapidly. The flames have jumped the 101!
Portions of Southern California remain under siege as two large brush fires are threatening numerous communities.