Tornadoes can occur all around the world and have been recorded in all Canadian provinces and as far north as the Canadian arctic. In fact, Canada is the world's second-most tornado-prone country.

Video: Canada wildfires: Highest-risk areas have ... Historically, some of the biggest tornadoes in Ontario were recorded in May and June, including EF4 tornadoes in Sarnia in May 1953 and Barrie ...