There is evidence of 20 large fires (> 20,000 ha) in a 560 year fossil fire record for the Santa Barabara area of central California.
View Research Brief PDF >
Mensing, S.A., J. Michaelson, & R. Byrne. 1999. A 560-year record of Santa Ana Fires reconstructed from charcoal deposited in the Santa Barbara Basin, California. Quaternary Research 51:295-305.