Add Yahoo as a preferred source to see more of our stories on Google. As an atmospheric scientist, I study and teach about extreme weather and its risks. Here's how hail forms, how hailstorms may be ...

During severe thunderstorms, rising air shoots icy pellets the size of Dippin’ Dots ice cream into the bitter cold of upper atmospheric layers. There, supercooled water freezes onto the small ...

A viewer captured hail falling during severe storms on Tuesday.

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A 12News viewer from Scottsdale is in Flagstaff and caught the heavy rain and hail on camera.