Extremely rare shot of a fire whirl by Photojournalist Edio Junior/Brazil. They are induced by fire and are composed of flame, gases, and combustible materials, initially sucked into eddies of air. Rarely, they can reach a cloud and become an actual tornado.
A fire whirl, colloquially fire devil or fire tornado, is a phenomenon—rarely captured on camera—in which a fire, under certain conditions (depending on air temperature and currents), acquires a vertical vorticity and forms a whirl, or a tornado-like vertically oriented rotating column of air. Fire whirls may be whirlwinds separated from the flames, either within the burn area or outside it, or a vortex of flame, itself.