Orrville, ON F0 Tornado of June 14, 2005

Parry Sound - Muskoka

Touching down briefly at 9:05 pm, the tornado was only on the ground for 200 metres and had an extremely narrow damage path that was only 3 metres wide. Large branches were snapped off of trees, with one of them crushing and destroying a camper. Witnesses reported seeing a funnel cloud with a swirl of debris at its base.

This was one of two tornado to touch down in Southern Ontario on June 14; the other was an F1 at Hanover. Figure 1 depicts the surface observations at 5:00 pm EDT, which shows a stationary front in southern Ontario. This front became the focus for intense thunderstorms in the evening hours of June 14th, which ultimately led to this F1 tornado.

Figure 1. Surface analysis at 21Z on June 14, 2005 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 9:05 pm near Orrville, ON. The tornado travelled for 200 metres with a maximum width of 10 metres. The tornado caused no fatalities, injuries or property damage.


NWS Weather Prediction Center Surface Analysis Archive. (2017). Surface analysis 21Z Tue Jun 14 2005. 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/