I’ve chased hundreds of supercells. What makes them the king of thunderstorms?

A supercell thunderstorm can tower 10 or more miles high. It can spit out pinpoint lightning strikes, drop grapefruit-size hail, rage for hours and traverse hundreds of miles. But the secret to a supercell’s power is that it’s a rotating thunderstorm. The entire storm spins. That’s why supercells c...

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