The Northern Tornadoes Project has upgraded a tornado that struck near Glencoe in southwestern Ontario on June 25 from an EF0 to an EF1 following a detailed ground and drone damage survey.
The tornado touched down at approximately 5:47 p.m. EDT and carved a damage path measuring 9.6 kilometres long and up to 250 metres wide. Investigators estimated peak wind speeds of 145 km/h.
The tornado primarily damaged older barns, recreational trailers and trees, while some homes sustained minor damage. No injuries were reported.
The Northern Tornadoes Project said witnesses captured photos and video of the tornado as it moved through the area.
An assessment team completed ground and drone surveys on June 25 and 26 to document the damage. Based on the findings, the tornado received a final EF1 rating, an upgrade from the preliminary EF0 classification announced shortly after the storm.
The survey found the tornado tracked from northwest to southeast, with the time of touchdown estimated using radar data. The Northern Tornadoes Project said a review of satellite imagery is still pending.
