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Researchers from the Northern Tornadoes Project at Western University confirmed that a tornado had occurred in Carleton Place, Ontario. Last week.
Researchers said in a blog post Tuesday that the tornado touched down at 4:12 p.m. on June 16 and lasted for several minutes but caused no damage, according to witnesses.
With no damage, this event was rated EF0-Default, which requires winds of at least 90 km/h, according to the Northern Tornadoes Project.
Canada uses a modified version of the Enhanced Fujita Scale, which rates tornadoes based on damage indicators.
The tornado occurred in an open field, spinning counter-clockwise under a rapidly rotating wall cloud, with the vortex eventually heading northeast, dissipating as it went.
On Monday, researchers who had investigated several weather phenomena in eastern Ontario confirmed the damage caused by the storm in Belleville and Mallorytown was caused by strong vertical gales known as downbursts.
The storm came with local tornado watches and warnings. It was less than a month later a fatal windstorm derecho cut power to hundreds of thousands of people in parts of Ontario and Quebec on May 21.
Researchers say climate change is leading to more extreme winds.
The project says it is still investigating the Carleton Place tornado, including by examining satellite imagery.
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