This tornado touched down just to the north of Brantford, in a rural area near Wyndham Hills. It was witnessed by several people but did not cause any appreciable damage. This was one of two tornadoes to touch down in Southern Ontario on August 19, 2001. The other was an F0 at Ipperwash.
Figure 1 depicts the surface observations at 2:00 pm EDT, which shows a trough across southern Ontario, bringing southerly winds across the province. This trough, possibly aided by lake-breeze boundaries, triggered thunderstorms across southern Ontario on August 19th, which ultimately resulted in two F0 tornadoes.
According to Environment and Climate Change Canada (2018), an F0 tornado touched down at 1:45 pm EDT near Wyndham Hills, ON. The tornado’s path was not documented by ECCC, but its maximum width was 30 metres. The tornado caused no fatalities, injuries or property damage.
Sources
NWS Weather Prediction Center Surface Analysis Archive. (2017). Surface analysis 18Z Sun Aug 19 2001. 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/