Forecasters expected dry air and strong wind to pose a challenge for firefighters into the weekend.
The massive blaze started when a stunt intended to reveal the biological sex of an unborn baby went wrong.
“This bill that I’m about to sign will give those prisoners hope of actually getting a job in the profession that they’ve been trained,” Gov. Gavin Newsom said.
Strong winds have stoked unprecedented numbers of fires that have forced rescues and evacuations.
Cal Fire Deputy Director Daniel Berlant said civilian efforts to fight the fires may be " well-intentioned," but "absolutely slow us down.”
The Santa Cruz County sheriff promised to catch the crook "and the DA is going to hammer this guy."
People incarcerated in California are already fighting for their lives against a devastating pandemic. Now they are surrounded by flames, too.
The animal "wasn't clowning around," said the Ventura County Fire Department, whose crews were tackling the Lake Fire north of Los Angeles.
At least one firefighter was injured as flames shot 100 feet in the air and tore through a warehouse.
All 11 firefighters are expected to survive their injuries. Three, however, were listed as being in critical condition on Saturday night; two of them on ventilators.