This probable tornado caused minor damage to homes, tearing off shingles and roofing. Witnesses observed a funnel cloud touching down at around 4:00 pm.
Figure 1 depicts the surface observations at 2:00 pm EDT, which shows a stationary front sitting over Lake Erie and Lake Ontario. This front became the focus for thunderstorm development in southern Ontario and ultimately this F0 tornado.
According to Environment and Climate Change Canada (2018), an F0 tornado touched down at 4:00 pm EDT near Tupperville, ON and moved in a northeast fashion. The track and width of the tornado was not documented by ECCC. The tornado caused no fatalities, injuries or property damage.
NWS Weather Prediction Center Surface Analysis Archive. (2017). Surface analysis 18Z Sat Aug 14 1993. Retrieved from: https://www.wpc.ncep.noaa.gov/archives/web_pages/sfc/sfc_archive.php
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/