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What 2 major air masses lead to the tornadoes in Tornado Alley?

User Mkocabas
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Answer: The land in the Great Plains is relatively flat, which allows cold dry polar air from Canada to meet warm moist tropical air from the Gulf of Mexico.

User Nuhkoca
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Answer:

It's along the front between the two airmasses that most tornadoes form.

Step-by-step explanation:

User Rhinosforhire
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