No hurricanes? Are you serious?
http://www.ec.gc.ca/water/en/manage/..._ont.htm#hazel
Hurricane Hazel induced the most severe flooding in Toronto in over 200 years. As much of the floodplain had been developed, the flood damage was high, being estimated at $25 million ($146.9 million in 1998 dollars). Over 20 bridges were destroyed or damaged beyond repair, 81 lives lost, and 1868 families left homeless.
It may not have been a cat 5, but it was still devastating to a city that doesn't expect them.