Lake Nipissing, ON Waterspout Tornado of July 15, 2014

North Bay - West Nipissing

This EF0 tornado formed as a waterspout over the eastern side of Lake Nipissing and produced no notable damage. Witnesses captured images of the event which occurred at around 8:15 pm.

This was one of two tornadoes to touch down on July 27, 2014. The other:

Figure 1. Surface analysis at 00Z on July 16, 2014 showing mean sea-level pressure (MSLP) contours, surface observations, fronts and pressure centres (WPC, 2017)

Figure 1 depicts the surface observations at 8:00 pm EDT, which shows an occluding low pressure system near the Ontario/Quebec border and a trough of low pressure near North Bay in central Ontario. A thunderstorm, marked as a red ‘R’, is observed near North Bay at this time. This thunderstorm was likely responsible for this brief tornado.


NWS Weather Prediction Center Surface Analysis Archive. (2017). Surface analysis 00Z Wed Jul 16 2014. Retrieved from: