Tornado. This email list is all about tornadoes and their effects on people. This group can at times be a heavy volume list due to multiple tornado warnings and other news coverage about these events being reported here.

Tornadoes are the most violent storms on Earth, with estimated wind speeds of 250 m.p.h. or more. A tornado is a violently rotating column of air that extends from the base of a thunderstorm and comes in contact with the ground. The spinning motion of a tornado is almost always counterclockwise.

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