High Quality Content by WIKIPEDIA articles! The 2011 Goderich, Ontario, tornado (rated as an F3 on the Fujita Scale) was caused by an isolated supercell which unexpectedly tore across Huron County, Ontario, on the afternoon of Sunday, August 21, 2011. Beginning as a tornadic waterspout over Lake Huron, the tornado ripped through the lakeside town of Goderich severely damaging the historic downtown and homes in the surrounding area. One person died and 37 more were injured as a result. This was the strongest tornado to hit Ontario in over fifteen years, since the April 20, 1996, tornado outbreak in Williamsford, Arthur, and Violet Hill.