Where do tornadoes strike?
In Canada, more than 70 tornadoes a year strike the populated regions. Fortunately, most are too weak to cause damage. In Canada, every province is subject to the risk of tornadoes (Figure 1). [D] Click for larger version, 24 KB Figure 1. Map of the Annual Number of Tornadoes in Canada The risk of tornadoes is highest in southern Ontario. The extreme southern part of the Prairies receives the second largest number. The tornado risk is high in south central Alberta, southern Saskatchewan and Manitoba, northeastern Ontario, and western Quebec. Overall, a third of the tornadoes occur in Ontario, and most of these are in the extreme southern part of the province. This region is also more likely to receive tornadoes of high intensity. In fact, of nine tornadoes of F4 strength recorded in Canada, seven were in southern Ontario and two were in western Canada. (However, these last two tornadoes were the worst Canada has ever known). In Manitoba, at least one tornado a year causes property dama
