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Tornadoes are violent storms. A tornado is a tall column of air that whirls around and around in a circle. Tornadoes reach from the ground up to the clouds and are very dangerous.
They start when cold air flows in over very hot land. This forces the hot air to rise fast, and it whirls around. Tornadoes destroy things in their path because of their strong winds. Tornadoes are measured by their wind speed and the damage they cause. They are measured using something called the Fujita scale. An F1 is a weak tornado, and an F5 is one of the strongest ones.
To learn more about tornadoes, visit this
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