Southern California is bracing for an "unprecedented" third Particularly Dangerous Situation warning in a month, as extreme Santa Ana winds increase fire danger.

Authorities urged people not to mow their lawns to prevent sparking a fire, nor start any fires that could get out of control. They also asked residents to review their evacuation plans and ready emergency kits and be on the lookout for any new blazes and report them quickly.

California Governor Gavin Newsom deploys additional firefighting resources ahead of predicted extreme fire weather.