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

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. A crew of 66 firefighters succeeded in containing 50% of the fire as of Tuesday evening. Investigations into its cause are still ongoing.

San Diego Fire-Rescue said the Center Fire at Camino Del Norte and Paseo Montanoso could potentially grow to 100 acres.

Fire crews are responding to an active brush fire burning in Rancho Bernardo Wednesday morning. According to San Diego Fire-Rescue, the department received the initial call around 8:55 a.m. The first unit of firefighters arrived shortly after 9 a.

A brush fire burning near a Rancho Bernardo intersection and close to several structures prompted a response from San Diego Fire-Rescue Department crews Wednesday.