London, ON F0 Tornado of August 2, 1996

London - Middlesex

Touching down east of the city at around 4:30 pm, this tornado was witnessed by Londoners who captured photos and video of a cone funnel approaching the ground. Fortunately, though a dramatic scene for local residents, no damage was caused.

Figure 1 depicts the surface map at 5:00 pm EDT, which shows southern Ontario in an area of high pressure. This would generally mean fair weather, but for the Great Lakes, it means lake-breeze. Lake-breeze boundaries triggered thunderstorms near Toronto and London and this F0 tornado developed on the London storm.

Figure 1. Surface analysis at 21Z on August 2, 1996 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 4:30 pm EDT in London, ON. The path and width of the tornado was not documented by ECCC. The tornado caused no fatalities, injuries or property damage.


NWS Weather Prediction Center Surface Analysis Archive. (2017). Surface analysis 21Z Fri Aug 2 1996. Retrieved from:

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