We just learned that tornadogenesis means the way a tornado starts.
Many tornadoes are started from a mesocyclone.
This happens when wind starts spinning around, and then lifts up into the air.
The air spins up higher and gets bigger and turns into a mesocyclone.
![mesocyclones](https://upload.wikimedia.org/wikipedia/commons/thumb/6/6a/Meso-2.svg/640px-Meso-2.svg.png)
(from: wikipedia - mesocyclone)
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