The Southern Ontario Tornado Outbreak of 2009 occurred in Southwestern Ontario, Central Ontario and the Greater Toronto Area (GTA) on August 20,2009, included seventeen confirmed tornadoes, four of them producing at least F2 damage.
The Southern Ontario Tornado Outbreak of 2009 occurred in Southwestern Ontario, Central Ontario and the Greater Toronto Area (GTA) on August 20,2009, and was the largest tornado outbreak in Canadian history. Eighteen tornadoes touched down, four of them producing at least F2 damage.