Eleven deaths have been confirmed and more than 12,000 structures have been damaged or destroyed. More than 150,000 people remain under mandatory evacuation orders. Law enforcement sources told The Times that it’s likely many of the small fires will turn out to have been the work of arson.

To the northeast, the Eaton Fire erupted in the Angeles National Forest, claiming at least five lives in the suburb of Altadena and damaging or destroying a likely 6,672 buildings as of early Thursday morning, according to the satellite analysis.

The Eaton and Palisades fires have burned more than 34,000 acres in Los Angeles County − an area larger than the city of San Francisco. The two fires cover the widest area among five fires in the vicinity and are raging through densely populated zones.