Canada has been no stranger to tornadoes and the devastation they leave behind. Here are the country's 10 deadliest, according to Environment Canada:

  1. Regina, June 30, 1912: 28 dead, hundreds injured.
  2. Edmonton, July 31, 1987: 27 dead, 300 injured.
  3. Windsor, Ont., June 17, 1946: 17 dead.
  4. Pine Lake, Alta., July 14, 2000: 12 dead, 140 injured.
  5. Valleyfield, Que., Aug, 16, 1888: nine dead, 14 injured.
  6. Windsor, Ont., April 3, 1974: nine dead, 30 injured.
  7. Barrie, Ont., May 31, 1985: eight dead, 155 injured.
  8. Sudbury, Ont., Aug. 20, 1970: six dead, 200 injured.
  9. Sainte-Rose, Que, June 14, 1892: six dead, 26 injured.
  10. Bouctouche, N.B., Aug. 6, 1879: five dead, 10 injured.

Source: Environment Canada

And for comparison, here are the 10 deadliest tornadoes that have struck the United States.

  1. March 18, 1925: Missouri, Illinois and Indiana, 695 killed
  2. May 6, 1840: Natchez, Mississippi, 317 killed
  3. May 27, 1896: St. Louis, Missouri, 255 killed
  4. April 5, 1936: Tupelo, Mississippi, 216 killed
  5. April 6, 1936: Gainsville, Georgia, 203 killed
  6. April 9, 1947: Woodward, Oklahoma, 181 killed
  7. May 22, 2011: Joplin, Missouri, 158 killed
  8. April 24, 1908: Amite, Louisiana and Purvis, Mississippi, 143 killed
  9. June 12, 1899: New Richmond, Wisconsin, 117 killed
  10. June 8, 1953: Flint, Michigan, 116 killed

 Source: U.S. National Weather Service/NOAA