Ottawa, ON EF0 Tornado of July 29, 2013

City of Ottawa

This EF0 tornado struck the Pine View Golf Course on the east side of Ottawa, causing tree and property damage. The damage occurred in a long track that was approximately 100m wide. It touched down at around 5:00pm as witnesses reported viewing a funnel cloud in the Blair Road area. It then passed through the golf course as witnesses caught videos of the tornado, a low-hanging cone with narrow vortices periodically condensing and dancing at its base.

Figure 1. Surface analysis at 21Z on July 29 2013 showing gmean 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 trough of low pressure moving across southeastern Ontario. This area of low pressure helped in triggering thunderstorms, which ultimately resulted in this tornado.


NWS Weather Prediction Center Surface Analysis Archive. (2017). Surface analysis 21Z Mon Jul 29 2013. Retrieved from: