August 20th, 2009 - 1 Day, 1 Province, 19 Tornadoes - The Weather Network
On August 20th, 2009, 19 tornadoes touched down in Ontario. This is Ontario's record for most tornadoes in a single day.
www.theweathernetwork.comI don’t have live access to the latest updates right now. Based on my current knowledge, here’s what’s known about the 2009 Southern Ontario tornado outbreak:
- It occurred on August 20, 2009, and was the largest single-day tornado outbreak in Ontario history, with 19 tornadoes confirmed across Southwestern and Central Ontario and the Greater Toronto Area.[2]
- Four of the tornadoes were rated F2, including damaging events near Vaughan (two in the GTA) and in Grey County around Thornbury, with significant damage to homes, cottages, and apple orchards; one fatality occurred in Durham.[4][2]
- The outbreak prompted widespread tornado watches and warnings, affecting more than 10 million people in Southern Ontario at the time.[3][2]
- Total damages were substantial, with Grey County and Vaughan reporting tens of millions in insured losses; overall costs were among the highest in Ontario tornado history for that period.[2][3]
If you want, I can pull newer/updated sources and summarize the latest commentary or anniversary coverage. Would you like me to fetch current articles or official meteorological summaries about this event?