Today marks the 25th Anniversary of the F4 tornado's that struck Grand Valley and Barrie killing 12 people and injuring more than 240. The tornado had winds estimated at 400 km per hour.
That day a series of 40 tornado's struck Ohio, New York, Pennsylvania and Ontario.
The "Barrie Tornado" was a significant event in emergency management in Ontario as it brought to the forefront the dangerous potential tornado's in Ontario.
For additional information check out this link:
http://www.ontariostorms.com/1985/barrie/