The wind-driven Sandy Fire was reported Monday in the hills above Simi Valley, about 30 miles northwest of Los Angeles.
One factor is the increasing amount of dry vegetation. It is fueling larger and more destructive wildfires.
Hydroclimate whiplash -- the rapid shift between wet and dry conditions -- likely contributed to the severity of the wildfires in Southern California, experts say.
Epic events like the Southern California wildfires do not have a singular cause.
Severe fire weather conditions -- high winds with low humidity -- will continue through Wednesday, keeping the fire threat in all of Los Angeles County critical, LA Fire Chief Anthony Marrone warned.
Satellite images provided by Maxar show the devastation caused by the Eaton Fire and the Palisades Fire in Southern California.