Satellite image shows California before the fires on Aug. 6, 2020. Satellite image shows smoke over California from wildfires on Aug. 20, 2020.

Before image: Satellite image shows California before the fires on Aug. 6, 2020; After image: Satellite image shows smoke over California from wildfires on Aug. 20, 2020; NASA via Maxar Technologies

Satellite image shows Boulder Creek, Calif., on June 30, 2020. Satellite image shows smoke over Boulder Creek, Calif., from the CZU Lightning Complex fire on Aug. 21, 2020.

Before image: Satellite image shows Boulder Creek, Calif., on June 30, 2020; After image: Satellite image shows smoke over Boulder Creek, Calif., from the CZU Lightning Complex fire on Aug. 21, 2020; Maxar Technologies

Satellite image shows Healdsburg, Calif., on July 29, 2020. Satellite image shows smoke over Healdsburg, Calif., from the LNU Lightning Complex fire on Aug. 20, 2020.

Before image: Satellite image shows Healdsburg, Calif., on July 29, 2020; After image: Satellite image shows smoke over Healdsburg, Calif., from the LNU Lightning Complex fire on Aug. 20, 2020; Maxar Technologies