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It is commonly stated that the formation of tornadoes in the requires a cold air mass from Canada, though it is not absolutely necessary. The thunderstorms that spawn tornadoes in the U.S. most often form along a cold front, which develops when the air mass from Canada collides with warm, moist air from the Gulf of Mexico. In some outbreaks, however, the storms from along a dry line, which develops when dry air from the Rockies pushes forward, rather than cold air. In still other cases tornadoes develop from the rain bands of hurricanes, storms from sea breezes, and in rare cases, air mass thunderstorms, none of which involve colliding air masses.
What else can I help you with?
Are tornadoes in Canada weaker than those that occur in the US?
Yes, generally, they are, though that does not mean that Canada does not get violent tornadoes.
Where is the greatest occurrence of tornadoes outside the us?
Canada.
What countries have the worst tornadoes?
USA, Canada, Bangladesh, Great Britain, New Zealand
What is the second place on earth that gets the most tornadoes outside the US?
The second highest incidence of recorded tornadoes is in Canada, which averages about 100 tornadoes per year.
What country along with us has a lot of tornadoes?
High instances of tornadoes have been observed in Canada, Australia, India, Bangladesh, and, surprisingly, the UK.
How often do tornadoes happen in Canada?
Canada averages about 100 tornadoes per year.
How many tornadoes hit Canada?
Canada gets about 100 tornadoes per year.
How often do tornadoes occur in Canada?
Canada gets about 100 recorded tornadoes each year.
Why does the US have more damages from hurricanes and tornadoes then Canada?
Hurricanes are a tropical weather event and rarely make it as far north as Canada. Even when they do they are rarely very strong. The climate of the United States is generally warmer than that of Canada, making it more prone to the violent storms that produce tornadoes
Where in the US or Canada can a tornado happen?
Tornadoes can occur in virtually all portions of the United States and Canada with the possible exception of northern Alaska and the northernmost Canadian territories.
Do you need a birth certificate to travel from Canada to the US?
As of June 1st, 2009, you need a passport to travel from Canada to the US.
Are Canada's tornadoes bad?
Tornadoes in Canada are usually not as bad as they are in the U.S. But a number of tornadoes in Canadian history, perhaps most notable the Edmonton tornado of 1987, have been pretty destructive.
