Salem, ON EF0 Tornado of September 1, 2013

Guelph - Erin - Southern Wellington County

Half an hour after the first EF0 tornado near Fergus, CANWARN spotter Dave Patrick captured a second EF0 tornado on video as it touched down west of Salem. This tornado was brief and did not cause any damage.

Figure 1. Surface analysis at 21Z on September 1, 2013 showing mean sea-level pressure (MSLP) contours, surface observations, fronts and pressure centres (WPC, 2017)

Figure 1 depicts the surface observations at 5:00 pm EDT, which shows a warm front across southern Ontario. This front became the focus for thunderstorm activity throughout the late-afternoon and evening hours of September 1st, which ultimately led to this tornado.


NWS Weather Prediction Center Surface Analysis Archive. (2017). Surface analysis 21Z Sun Sep 1 2013. Retrieved from: