Each charge carries two to four years of prison time upon conviction.
Investigators found several pieces of evidence that indicated revelers had triggered the blaze by setting a campfire at a popular party spot by a cave. County Supervisor Zev Yaroslavsky said campfires in the area were prohibited.
Arson detective Irma Gonzales said 12 people had been partying at the cave. She did not comment on how the blaze spread from the campfire, but said the group did not try to fight it, nor did they try to warn residents as they fled from the flames.
"They just drove off," Gonzales said.
A review of security tape from a nearby store's camera and other detective work that took investigators as far away as Shasta County, on the Oregon line, led to the arrest warrants, Whitmore said.
The wildfire destroyed 53 homes, 33 outbuildings, one mobile home and 37 vehicles. Another 34 homes and 11 outbuildings were damaged. No one was seriously injured. The fire broke out Nov. 24 and took several days to contain.