The top 3 countries for tornados are
1.US
2.Australia
3.UK
Because Australia is sparsely populated, we just don't hear about every tornado that touches the ground.
It must have been in the 1970's when a twister went through Margate, on the Redcliffe Peninsula, in Queensland, taking the roof of the local Woolies shopping centre with it.
Found a link.
http://www.ema.gov.au/ema/emadisaste...4?OpenDocument