Oh my gosh, that's the first I've heard of this. How frightening. We were up in the Muskoka region this weekend, and coming down yesterday there was a severe thunderstorm warning. We saw big dark clouds banked up on the western horizon over Lake Huron way, and lots of flashes of sheet lightening. That must have been the storm going through.
A good friend of mine has family there and is just preparing to move to Goderich...fortunately the entire family is safe and accounted for. No news on prperty damage yet, though.