Laurel Station, ON EF1 Tornado of June 24, 2014

Dufferin County

Touching down at around 3:30 pm near Laurel Station, this EF1 tornado caused considerable damage to trees and houses. Numerous trees were downed, one house sustained roof damage and another was shifted off of its foundation. In addition, an RV was moved several metres. The tornado travelled for 7 kilometres and had a width of 150 metres, with winds estimated to be between 135 and 175 kilometres per hour.

This was one of two tornadoes to touch down on June 24, 2014. The other,

Figure 1. Surface analysis at 21Z on June 17, 2014 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 low pressure near Barrie with a warm front extending across the GTA and Lake Ontario and a cold front extending across Lake Huron. Another cold front is seen extending across central Ontario/Quebec. The interaction between the warm front and cold fronts led to intense thunderstorm development across southern Ontario, which ultimately led to two EF1 tornadoes.


NWS Weather Prediction Center Surface Analysis Archive. (2017). Surface analysis 18Z Tue Jun 24 2014. Retrieved from: