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

It takes 60- to 80-mph winds for the company to shut down transmission lines. CEO Steve Powell said it didn't see winds that powerful.

The particularly dangerous situation alert is relatively new to Southern California but has been issued before the recent wildfires that have caused devastation across LA County.

The deadly Eaton Fire in the Pasadena and Altadena areas was almost fully surrounded Monday, and fears of flooding or debris flows from weekend rains were easing as the storm system moved off to the east.

Forecasters issued a flood watch for the devastated Eaton Fire area in Altadena as firefighters Monday improved containment of the massive burn area to 98%, and continued to root out hot spots. With rain expected through Monday,

Southern California firefighters continue to battle several fires across the region as red flag weather ... National Guard stand near rising smoke, as the Eaton Fire continues, in Altadena ...

Under mandatory evacuation, Jones and several other Altadena residents were met by yellow caution tape and National Guard and California Highway Patrol personnel. Frustrated and unable to reach ...

Southern California's first major storm of the season brought rain and snow, helping to extinguish wildfires but causing mudflows and road closures. Emergency crews worked to clear debris, and the storm disrupted schools and transport routes.

Rain has continued to fall across parts of Southern California, increasing the risk of toxic ash runoff in areas hit by flames.

The National Weather Service issued a Particularly Dangerous Situation warning Monday, says winds could reach up to 100 mph.

The fires are also among the most destructive in California’s modern history ... the meteorologist in charge of the National Weather Service office in Oxnard. “In the case of an evacuation ...