"The fire is growing with a moderate rate of spread and structures are threatened," Cal Fire said as it issued evacuation orders.

The fires come as San Diego County mountains and valleys, along with other parts of Southern California, remain under a red flag warning.

Multiple brush fires erupted in San Diego’s North County early Tuesday morning, prompting a fast response from firefighters and mandatory evacuations.

A wind-driven wildfire charred dozens of acres in the sparsely developed northeastern reaches of San Diego County, damaging structures and forcing pre-dawn evacuations before crews could gain the upper hand on the flames Wednesday.

At least 27 people have died in the Eaton and Palisades fires, the Los Angeles County Medical Examiner said Thursday evening. Seventeen of the deaths are from the Eaton Fire in Altadena and 10 from the Palisades Fire, according to the medical examiner.

Lilac Fire initially started today at 1:19 a.m. in San Diego County. It has burned 85 acres after being active for 19 hours, an increase of 68 acres since the last update. A crew of 66 firefighters succeeded in containing 50% of the fire as of Tuesday evening. Investigations into its cause are still ongoing.

A vegetation fire broke out in Bonsall in North San Diego County, damaging multiple structures early Tuesday morning.

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.

Continued strong winds and dry conditions on Wednesday morning rapidly spread a fire near Castaic Lake in northern Los Angeles County and has burned through 8,096 acres.

More than 50,000 are under evacuation orders or warnings as a new wind-driven wildfire spreads in the mountains north of Los Angeles. The Hughes Fire broke out late Wednesday morning.