Wildfires

thumb|upright=1.35|Wildfire burning in the Kaibab National Forest, [[Arizona, United States, in 2020. The Mangum Fire burned more than of forest.]] A wildfire, forest fire, or a bushfire is an unplanned and uncontrolled fire in an area of combustible vegetation. Some natural forest ecosystems depend on wildfire. Modern forest management often engages in prescribed burns to mitigate fire risk and promote natural forest cycles. However, controlled burns can turn into wildfires by mistake.

whirlwind induced by a fire and often partially composed of flame or ash

Estimate of the soil moisture deficit