High Quality Content by WIKIPEDIA articles! The Regina Cyclone is the popular name for a tornado that devastated the city of Regina, Saskatchewan, Canada on June 30, 1912. It remains the deadliest tornado in Canadian history, with a total of 28 fatalities, the population of the city having been 30,213 in 1911. At about 4:50 p.m., green funnel clouds formed and touched down south of the city, tearing a swath through the residential area between Wascana Lake and Victoria Avenue, and continuing through the downtown business district, rail yards, warehouse district, and northern residential area.