Weissenburg, ON F0 Tornado of May 27, 2001

Waterloo - Wellington

No notable damage was caused by this tornado, however eyewitness accounts of the twister indicate that it was on the ground for several kilometres near Weissenburg.

Figure 1 depicts surface observations at 2:00 pm EDT, which shows a strong low pressure system occluding over Michigan with a trough extending into southern Ontario. This trough became the focus for thunderstorms, which ultimately resulted in this F0 tornado.

Figure 1. Surface analysis at 18Z on May 27, 2001 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 4:45 pm EDT near Weissenburg, 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 18Z Sun May 27 2001. 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/