noun
A small and usually weak tornado that forms within a line of intense thunderstorms known as a derecho.
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A gustnado is a small and usually weak whirlwind that forms on the leading edge of a severe thunderstorm.
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I heard that a gustnado touched down near our town yesterday, but luckily it didn't cause much damage.
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I saw a gustnado coming towards us, it was like a mini tornado!
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The sudden gust of wind felt like a gustnado blowing through the room, scattering papers everywhere.