has part has quality formed as result of environmental material aeroform fire fire whirl 2018-10-04T16:59:07Z A fire whirl is a whirlwind induced by the contraction and rotation of intense, rising heat and turbulent, eddying air masses resulting from a large fire and made up of a core of burning matter surrounded by a rotating pocket of air. Note that this not a sublcass of "tornado": this is a different phenomenon formed as a result of convection induced by fire. fire devil fire swirl fire tornado fire twister firenado columnar increased combustibility