Witnesses reported observing circling debris as this tornado touched down at 2:15 pm. The Bradford Greenhouses were torn apart, their frames left twisted and plastic coverings torn off. Heavy fish tanks were thrown about and trees were snapped and uprooted.
Figure 1 depicts the surface observations at 2:00 pm, which shows a low pressure system in extreme eastern Ontario and a cold front extending into southern Ontario. Another low pressure and cold front is also approaching from north-central Ontario. The likely scenario is, after the cold front passage, lake-breeze boundaries originating from Georgian Bay initiated some thunderstorms downstream into southern Ontario. The lake-breeze boundaries and the forcing ahead of the northern cold front likely led to this brief tornado near Lake Simcoe.
![](https://highwaysandhailstones.com/wp-content/uploads/2019/11/Untitled-9.png)
According to Environment and Climate Change Canada (2018), an F0 tornado touched down at 2:15 pm EDT near Deerhurst, ON. The path and width of the tornado was not documented by ECCC The tornado caused no fatalities or injuries, but caused $100 thousand dollars in property damage.
Sources
NWS Weather Prediction Center Surface Analysis Archive. (2017). Surface analysis 18Z Tue Aug 25 1998. 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/