Pogonip (weather)

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Pogonip is a type of fog consisting of ice crystals suspended in the air. The name "pogonip" is a Shoshone word meaning "white death". Pogonip only forms under the right conditions, the humidity has to be near 100% as the air temperature drops to below 0° C, allowing ice crystals to form in the air. The ice crystals will then settle onto surfaces.

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