DES MOINES, Iowa — Diamond dust refers to a phenomenon when snow is able to form under clear skies. But how does it happen? Meteorologist Gabe Prough breaks it down in this week’s Weather Why.

DES MOINES, Iowa — Diamond dust refers to a phenomenon when snow is able to form under clear skies. But how does it happen? Meteorologist Gabe Prough breaks it down in this week’s Weather Why.
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