Canada's biggest single-day tornado outbreak produced 19 twisters in Ontario

On this day in weather history, 19 tornadoes touched down in Ontario, including four F2 twisters. At one point, over 10 million Canadians were under tornado watches or warnings

Our goal is to create a safe and engaging place for users to connect over interests and passions. In order to improve our community experience, we are temporarily suspending article commenting