According to Environment and Climate Change Canada (2018), an F0 tornado touched down at 4:00 pm EDT near Erin, ON. The track and width of the tornado was not documented by ECCC. The tornado caused no injuries, fatalities or property damage.
Source
Environment and Climate Change Canada Data. (2018). Canadian National Tornado Database: Verified Events (1980-2009) – Public. Retrieved from: http://donnees.ec.gc.ca/data/weather/products/canadian-national-tornado-database-verified-events-1980-2009-public/