Wildfires occur when vegetated areas are set alight and are particularly common during hot and dry periods. They can occur in forests, grasslands, brush and deserts, and with sufficient wind can rapidly spread.

The most common causes of fires are lightning strikes, sparks during arid conditions, the eruption of volcanoes, and man-made fires arising from deliberate arson or accidents.

Fig. Fires in California, USA on December 6, 2017 by FY-3B.

Fig. Fires in California, USA on November 10, 2018 by FY-3D.

Fig. Fires at the China-Russia border on March 18, 2019 by FY-3D.

Fig. Fires triggered heavy maze in the Indochina Peninsula on March 13, 2019 by FY-3D.