A research group out of Western University says Barrie wasn't the only place hit by a twister on Thursday.
The Northern Tornadoes Project found five tornadoes touched down in southern Ontario that afternoon.
The organization says the tornadoes all had maximum wind speeds in the EF-2 range, between 180 and 220 kilometres per hour.
The tornado in Barrie was by far the most devastating, tearing through a residential neighbourhood and sending 10 people to hospital.