On 18 January 2003 , a supercell thunderstorm formed from a cumulonimbus flammagenitus cloud associated with a severe wildfire , during the 2003 Canberra bushfires in Canberra , Australia . The supercell resulted in a large fire tornado , rated at EF3 on the fujita scale , the first confirmed violent fire tornado . The tornado and associated fire killed 4 people and injured 492
2003 Canberra bushfires
2003 Canberra bushfires
Cumulonimbus flammagenitus