By CBC News Ottawa, August 22, 2017
Environment Canada is confirming that Lachute, Que., was hit yesterday by a tornado, causing severe damage to more than a dozen homes. Investigators are still trying to determine the strength of the tornado, which touched down around 6:10 p.m. Tuesday.
It developed as part of a storm that hammered parts of southeastern Ontario and southwestern Quebec. At least one home's roof was torn off, but there are no reports of injuries.
http://www.cbc.ca/news/canada/montreal/environment-canada-lachute-tornado-1.4258451