Sudbury, Ontario Tornado

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On August 20, 1970, an F3 tornado hit the Canadian city of Sudbury, Ontario.

Considered unusual because tornadoes rarely occur so far north, the tornado touched down in the suburban community of Lively. Reaching a speed of 160 kilometres per hour, the tornado tracked eastward into the city, hitting the communities of Copper Cliff and Robinson over the next ten minutes. Another tornado associated with the same storm also hit the community of Field, approximately 50 kilometres east of Sudbury, on the same day.

Six people died and 200 were injured in the tornado, which caused an estimated $17 million in damage, including to an Inco smelter in Copper Cliff. It remains the eighth deadliest tornado in Canadian history.