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

The National Weather Service issued a warning of a “particularly dangerous situation” for parts of Los Angeles and Ventura counties from Monday afternoon through Tuesday morning.

The Los Angeles region, still reeling from this month’s firestorm, is under a red-flag warning from noon Monday through Tuesday morning.

Windy and dry conditions have returned to Southern California, raising the risk of new wildfires sparking as firefighters continue to battle two major blazes in the Los Angeles area that started in similar weather nearly two weeks ago.

Hurricane-strength gusts from Santa Ana winds will sweep over the mountains and foothills around Los Angeles, putting the region back on high alert after two weeks of devastating fires.

Forecasters in Southern California expect to issue a 'particularly dangerous situation' red flag warning for the coming week as the Santa Ana wind forecast worsens.