I too drove through the day after on my way to Honey Harbour to do a little fishin' and remember that as well.
On the same day as the Barrie tornado the longest tornado track in Canadian history went from Grand Valley to Tottenham 115kms away.
It was also an F4 like the Barrie tornado.
There were a total of 14 tornadoes on that day in Ontario.
2 F1's, 8 F2's, 2 F3's, and 2 F4's!!!!