Much-needed rain has begun to fall over Southern California, bringing relief to the drought-stricken region but also the threat of toxic runoff.

Firefighters made progress on the more than 10,000-acre Hughes Fire Friday, which sent thousands fleeing after sparking near the Los Angeles County community of Castaic a day earlier.

Coverage of the Hughes, Sepulveda and Laguna fires in Southern California during a fourth consecutive day of red flag fire weather warnings.

Thousands of firefighters have been battling wildfires across 45 square miles of densely populated Los Angeles County. The two largest fires, the Palisades Fire in Pacific Palisades and the Eaton Fire near Pasadena, remain active. One of the latest, the Hughes Fire in the Castaic area, has prompted evacuation orders for tens of thousands of people.

As another round of wild Santa Ana winds threatens Southern California this week ... he pointed to areas along the 101 Freeway and in Santa Clarita, where the Santa Ana winds traditionally ...

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.

The Hughes fire broke out near the Lake Castaic area of northern Los Angeles County, two weeks after blazes that claimed at least 28 lives and devastated the city broke out.

The fire threat remains critical in Southern California, where thousands of residents were under evacuation orders Wednesday as fire crews battled the out-of-control Hughes Fire near Castaic, a suburb in the foothills and mountains of northern Los Angeles County.

The Sepulveda fire was the latest blaze in a nerve-racking week as Southern California headed into a fourth consecutive day of red flag fire weather warnings.

Photos taken of the Hughes Fire around Castaic Lake, California captured the massive blaze and cloud of smoke visible from Six Flags Magic Mountain.

Firefighters continue to battle fires across Southern California as the area prepares for a presidential visit Friday and rain in the weekend forecast.