Researchers with Western University’s Northern Tornadoes Project have confirmed two separate weather events in Ontario from last weekend. They say there was microburst at 4 p.m. Saturday in the Lucan area, followed shortly after by a tornado located near Granton. Both events have been classified as EF-0, with estimated wind speeds reaching 130 and 110 kilometres an hour respectively. The EF scale is a six-point scale that goes from zero (weakest) to five (strongest), according to Environment Canada. The Northern Tornadoes Project says that due to limited damage indicators there is insufficient data to accurately determine track details, but says the Granton tornado likely had a path of at least one kilometre long and moved in a westerly direction. Surveyors conducted an evaluation of the Granton and Lucan areas on May 10 using a ground and drone survey. In Granton, there was damage to a solar panel, tree damage, and a truck pulling a trailer which was reportedly toppled by the tornado. Near Lucan, the downburst also caused damage to a farm building. No injuries were reported. The storm prompted multiple weather warnings in the London area and further east, including a red tornado warning from Environment Canada, an emergency alert sent to mobile phones, and the blaring of weather sirens at the University of Western Ontario. It’s the first confirmed Canadian tornado of the 2026 season.
