Norwich, ON F0 Tornado of June 25, 2009

This probable tornado touched down in rural areas near Norwich at around 7:00 pm, leaving uprooted and snapped trees along a 3 km path.

This was one of four tornadoes to touch down in Southern Ontario on June 25; the others:

Avon (F2)
Harrow (F1)
Leamington (F1)

Figure 1 depicts the surface observations at 2:00 pm EDT, which shows a cold front slicing through southern Ontario. This front became the focus for intense thunderstorms in the early afternoon hours of June 25th, which ultimately led to several tornadoes across Ontario.

**Figure 1.** Surface analysis at 18Z on June 25, 2009 showing mean sea-level pressure (MSLP) contours, surface observations, fronts and pressure centres (WPC, 2017)

Sources

NWS Weather Prediction Center Surface Analysis Archive. (2017). Surface analysis 18Z Thu Jun 25 2009. 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/

Sources

Through the Eyes of Our Chasers