Extensive damage was done as the tornado cut through forest, snapping most trees or shearing off their tops. It struck at 7:30 pm and had a path that was 6.2 kilometres long and 200 metres wide.
This was one of 17 tornadoes that touched down in Southern and Eastern Ontario during the evening hours of August 2, 2006. Until it was surpassed in 2009, the tornado outbreak set a record as the largest tornado outbreak ever recorded in Ontario.
Figure 1 depicts the surface observations at 5:00 pm EDT, which shows a low pressure over Georgian Bay with a cold front stretching into Michigan. This cold front became the focus for intense thunderstorms in the evening hours of August 2nd, which ultimately led to a tornado outbreak across southern Ontario.
According to Environment and Climate Change Canada (2018), an F1 tornado touched down at 7:30 pm near Marsden Lake, ON. The tornado travelled for 6.2 km with a maximum width of 200 metres. The tornado caused no fatalities or property damage, but injured one person.
NWS Weather Prediction Center Surface Analysis Archive. (2017). Surface analysis 21Z Wed Aug 2 2006. 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/