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All confirmed and probable significant (F2, F3 and F4) tornadoes plotted by location, based on data from 1918-2004 (Southern Ontario)
All confirmed and probable significant (F2, F3 and F4) tornadoes plotted by location, based on data from 1918-2004 (Southern Ontario)

Source: Environment Canada, 2009c. Internal. Data provided courtesy of David Sills, Meteorological Research Branch, Meteorological Service of Canada.