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The energy for all weather on Earth ultimately comes from the sun. The sun's energy heats the surface of the Earth, which in turn heats the air just above it. Where the sun heats the surface of the ocean, evaporation occurs, which moistens the air. Warm, moist air carries a very large amount of energy that is the power source for thunderstorms. Thunderstorms are what spawn tornadoes, but not just any thunderstorms. The thunderstorms that spawn tornado typically form along a frontal boundary. Given the right setup of wind patterns at different levels of the atmosphere, these storms can start rotating, turning into supercells. The rotation in the storms can then tighten and intensify to form tornadoes.

So, in short, the sun heating the Earth and causing evaporation provides energy that powers thunderstorms. Under the right conditions these storms can start roatating, and their energy can become focused in the form oftornadoes.

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11y ago

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