Mount Pleasant, ON F0 Tornado of August 15, 1989

Oxford - Brant

This tornado occurred at 12:00 pm, touching down briefly and causing damage at area property. Witnesses reported observing a funnel cloud as it moved through their yard, snapping & uprooting several trees.

Figure 1 depicts the situation at the surface, with a cold front moving through southern Ontario. It is uncertain whether pre-frontal storms developed or if a trough initiated the storms that led to this tornado.

Figure 1. Surface analysis at 18Z on August 15, 1989 showing mean sea-level pressure (MSLP) contours, surface observations, fronts and pressure centres (WPC, 2017).

According to Environment and Climate Change Canada (2018), an F0 tornado touched down at 12:00 pm EDT near Mount Pleasant, 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 18Z Tue Aug 15 1989. Retrieved from:

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