The Orange County Fire was Arson set....most of the others are from Poser Line transformers being blown over....or they have not stated what was the cause....
The Raging Fire on the Sky Island at Lake Arrowhead,...Green Lake...Running Springs..etc...is hugely complicated because many of the tall pines are dead from a beetle infestation....
Poser Line ......= Power Line.....thought I did a spell check....