A tornado is a remarkable weather event that we do not usually get in British Columbia. It is a violent column of spinning air that is in contact with the ground and usually a cloud. Some are large and last for hours and some are small and last for just a few seconds. When they happen over water they are called waterspouts. They are not nearly as large as hurricanes but they have caused serious destruction of buildings and up to 700 deaths. America has about 1,200 tornadoes per year but most of them are not fatal storms.
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