MONTREAL — A cluster of tornadoes that knocked down trees and tore the roof off a home in southern Quebec last June was one of the largest ever recorded in Canada, according to new research from Western University. As part of a pilot project to detect previously unreported tornadoes, Western researchers found that a record-setting 11 tornadoes touched down in Quebec on June 18, 2017, rather than the four that were previously recorded. Kopp said the most powerful tornado to hit southern Quebec that day was a 200 km/h twister that damaged a 30-kilometre swath near Ste-Anne-du-Lac, north of Montreal. According to Environment Canada, about 60 tornadoes are observed in Canada each year, most of them in the Prairies and southern Ontario. He said the study suggests tornadoes are much more common in Canada than experts previously believed.

Source: National Post April 28, 2018 10:52 UTC