On the afternoon of Sunday August 18, 1985, a series of thunderstorms developed over southwestern Ontario. Residents throughout Huron and Perth Counties observed funnel clouds developing under some of the storms. At about 3:45 pm one of the funnels touched down WSW of the small town of Monkton. It tracked about five kilometres across the community causing sporadic damage along its path. Many trees were damaged, as well as a cornfield. Some houses sustained minor damage and an old meeting hall in poor repair was unroofed.
According to Environment and Climate Change Canada (2018), an F0 tornado touched down at 3:45 pm EDT near Monkton, ON. The tornado travelled 5.3 km and had a maximum width of 240 metres. The tornado caused no fatalities, injuries or property damage.
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/