The sun sets through smoke created by the Ranch Fire on Aug. 13, 2020, in Azusa, Calif. A heat wave has prompted electrical providers to issue the first rolling blackouts in the state since 2001.

The sun sets through smoke created by the Ranch Fire, 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)