Many people fled the city with only their basic necessities, with police officers and firefighters going door to door warning people to evacuate. By August 20, the LNU fire had burned and destroyed 480 structures. It forced the evacuation of some personnel in the Travis Air Force Base and the city of Healdsburg, California, that had already evacuated previously during the Tubbs Fire and the Kincade Fire. SCU Lightning Complex The SCU Lightning Complex was a cluster of 20 different fires in the Santa Clara, Contra Costa, Alameda, Stanislaus, and San Joaquin counties, that was divided into 3 different zones - the Deer Zone, Calaveras Zone, and Canyon Zone. By August 18, the fires had expanded to over with only 4 percent containment. By August 20, the fire burned and was 5% contained, evacuating people in the East San Jose foothills, and threatening the Lick Observatory with flames. On August 21, the SCU fire had exploded overnight by more than 40%, reaching a total of and being 10% contained. Impacts The North Complex fire's Bear Fire had destroyed the town of Berry Creek. The SCU Lightning Complex fires have threatened the cities of Fremont, Milpitas, Patterson, and San Jose, and also threatened Lick Observatory. Evacuations Air quality and smoke pollution On September 9, 2020, the sky appeared orange across the Bay Area due to wildfire smoke. See also 2020 California wildfires 2020 Western United States wildfires References August lightning August 2020 events in the United States