Thunderstorms

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One large hailstone with a ruler next to it. The hailstone is more than 4 centimeters across.

Look out! It’s hail!

This hailstone is a chunk of ice that’s bigger than a ping pong ball. Large hail can cause lots of damage when it falls from the sky during a thunderstorm. 
Learn why hail happens!
 

Why Does Hail Happen?