During the 2003 Canberra bushfires in Canberra , Australia a violent firewhirl was documented . It was calculated to have horizontal winds of and vertical air speed of , causing the flashover of in 0.04 seconds . It was the first known firewhirl in Australia to have EF3 wind speeds on the Enhanced Fujita scale
2003 Canberra bushfires
2003 Canberra bushfires
Fire whirl