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Tornadoes that form from a super cell thunderstorm are the most common, and often the most dangerous. A super cell is a long-lived (greater than 1 hour) and highly organized storm feeding off an updraft (a rising current of air) that is tilted and rotating. This rotating updraft - as large as 10 miles in diameter and up to 50,000 feet tall - can be present as much as 20 to 60 minutes before a tornado forms.
A tornado can form almost anywhere that there are thunderstorms, but they form on the central plains of the United States more than any other place in the world.

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12y ago

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