Motorists make their way along a road as the Ranch Fire burns, Thursday, Aug. 13, 2020, in Azusa, Calif. Heat wave conditions were making difficult work for fire crews battling brush fires and wildfires across Southern California. (AP Photo/Marcio Jose Sanchez)

The Ranch Fire burns over a residential area, Thursday, Aug. 13, 2020, in Azusa, Calif. Heat wave conditions were making difficult work for fire crews battling brush fires and wildfires across Southern California. (AP Photo/Marcio Jose Sanchez)

Cyclists rest along a trail as the Ranch Fire burns, Thursday, Aug. 13, 2020, in Azusa, Calif. Heat wave conditions were making difficult work for fire crews battling brush fires and wildfires across Southern California. (AP Photo/Marcio Jose Sanchez)

A cyclist rides along a trail as the Ranch Fire burns, Thursday, Aug. 13, 2020, in Azusa, Calif. Heat wave conditions were making difficult work for fire crews battling brush fires and wildfires across Southern California. (AP Photo/Marcio Jose Sanchez)

Motorists make their way along a road as the Ranch Fire burns, Thursday, Aug. 13, 2020, in Azusa, Calif. Heat wave conditions were making difficult work for fire crews battling brush fires and wildfires across Southern California. (AP Photo/Marcio Jose Sanchez)

A helicopter prepares to drop water on the Lake Fire burning in the Angeles National Forest north of Santa Clarita, Calif., on Thursday, Aug. 13, 2020. (AP Photo/Noah Berger)

An air tanker drops retardant as the Lake Fire burns in the Angeles National Forest north of Santa Clarita, Calif., on Thursday, Aug. 13, 2020. (AP Photo/Noah Berger)

Los Angeles County firefighter Brad Auman fills a water tank while helping battle the Lake Fire in the Angeles National Forest north of Santa Clarita, Calif., on Thursday, Aug. 13, 2020. The beach ball is used to prevent air from entering intake hoses while refilling fire engine water tanks. (AP Photo/Noah Berger)