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This page documents all tornadoes confirmed by Environment Canada and the University of Western Ontario's Northern Tornadoes Project (NTP) in Canada throughout 2023. Based on statistical modelling by Sills et al. (2012), an average of 230 tornadoes likely occur across the country each year; however, only 61 of these are actually documented annually based on 1980–2009 averages. [1]
The peak season for tornadoes and severe thunderstorms in Canada is in the summer months, although tornadoes in Canada have occurred in spring, fall and very rarely winter. In Canada, tornadoes are rated based on the damage they cause using a set of "Damage Indicators" which estimate wind speeds based on different levels of damage. Before April ...
May 31 – North Bay, Ontario, was struck by two weak tornadoes. June 23 – a weak tornado touched down in Ottawa between Kanata and Barrhaven.; July 28 – severe thunderstorms over Northern Ontario produced a tornado over Halfway Lake Provincial Park (70 km (43 mi) north of Sudbury) where 800 people were camping at the time, fallen trees injure 4 campers.
Canada's tornado season once again proved to be hyperactive in 2022, with 117 tornadoes recorded for the second year in a row, equaling the country's highest number on record. While documented ...
An example of a tornado warning polygon issued by the National Weather Service. A tornado warning (SAME code: TOR) is a public warning that is issued by weather forecasting agencies to an area in the direct path of a tornado, or a severe thunderstorm capable of producing one, and advises individuals in that area to take cover.
Since its initial usage in May 1999, the National Weather Service (NWS) in the United States has used the tornado emergency bulletin — a high-end classification of tornado warning — sent through either the issuance of a warning or via a "severe weather statement" that provides updated information on an ongoing warning—that is issued when a violent tornado (confirmed by radar or ground ...
In Canada, a severe thunderstorm is defined as having wind gusts of greater than 90 km/h (56 mph), hail with a diameter of greater than two centimetres (0.79 in), rainfall rates of greater than 50 millimetres (2.0 in) in one hour or greater than 75 millimetres (3.0 in) in three hours, or tornadoes. [14]
That includes four strong tornadoes, of at least EF-2 strength. Two were rated EF-3 in southeastern Texas. In addition, over 200 reports of severe wind gusts or damage impacted the region.