Striking at 9:45 pm, considerable damage occurred at Petrolia. A barn and silos were destroyed, trees were snapped and uprooted, a trailer was left mangled, wrapped around a tree, and the porches were torn from houses.
Figure 1 depicts a significant low pressure system occluding near Lake Superior at 8:00 pm EDT with a warm front extending in southern Ontario. A line of storms is also observed spanning from Michigan to southern Illinois. This squall line is responsible for the F1 tornado that occurred later in Petrolia.
According to Environment and Climate Change Canada (2018), an F1 tornado touched down at 9:45 pm EDT near Petrolia, ON. The track and width of the tornado was not documented by ECCC. The tornado caused no injuries, fatalities or property damage.
Sources
NWS Weather Prediction Center Surface Analysis Archive. (2017). Surface analysis 00Z Thu Jun 18 1992. 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/