Two tornadoes hit Windsor-Essex over the weekend, including one that ripped through a greenhouse in Leamington, according to the Northern Tornadoes Project.
Researchers with the Western University-based initiative surveyed damage at several sites earlier week following the storm on Saturday night.
They concluded that a twister touched down in Windsor at 9:20 p.m. and caused tree and roof damage described as minor. The tornado, which moved at an estimated 125 km/h, has a preliminary rating of EF0, the weakest rating on the Enhanced F-scale used for measuring the strength and destruction caused by tornadoes.
The tornado that hit Leamington less than an hour later was stronger, with a preliminary rating of EF1 and winds estimated at 145 km/h.
The twister caused extensive damage at a greenhouse, and also uprooted trees, according to images of the aftermath shared to Twitter by research assistant Francis Lavigne-Theriault.
In addition to the twisters in Leamington and Windsor, two other tornadoes have been confirmed by the researchers. The tornadoes in Bayfield and Thornbury were both rated EF-0.