As wildfires continued to burn in Los Angeles, three fires broke out in San Diego County, prompting evacuation orders and warnings.

"If fire ignition occurs, conditions are favorable for very rapid fire spread and extreme fire behavior," the NWS warns.

Thousands of firefighters are battling wildfires across 45 square miles of densely populated Los Angeles County. About 82,000 people remain under mandatory evacuation orders and another 90,000 are under evacuation 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.