Petrolia, ON F1 Tornado of June 17, 1992

Sarnia - Lambton

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.

Figure 1. Surface analysis at 00Z on June 18, 1992 showing mean sea-level pressure (MSLP) contours, surface observations, fronts and pressure centres (WPC, 2017).

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.


NWS Weather Prediction Center Surface Analysis Archive. (2017). Surface analysis 00Z Thu Jun 18 1992. Retrieved from:

Environment and Climate Change Canada Data. (2018). Canadian National Tornado Database: Verified Events (1980-2009) – Public. Retrieved from: