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Environment Canada has issued a tornado watch for Ottawa, warning of severe thunderstorms that could also produce strong winds, large hail and heavy rain.
Western University's Northern Tornadoes Project warns weather conditions could provide the "significant ingredients" for a "likely tornado" in Ottawa and eastern Ontario on Thursday.
On May 31, 1985, a series of tornadoes left a wake of destruction and devastation across central Ontario.
The storm that hit Ottawa on May 21 brought strong winds that reached 190 kilometres per hour in ...
When Canadian tornado expert David Sills studied the forecast on Saturday morning, he never expected the line of storms headed for Windsor, Ont., would soon strengthen into Canada’s first derecho in decades, wreaking havoc across southern Ontario and Quebec.