This storyoriginally appeared on Gristand is part of theClimate Deskcollaboration. As wildfire smoke descended on Seattle last week, the sun turned an apocalyptic shade of red and the city breathed in some of the unhealthiest air in the world. A new word to describe this phenomenon graced the headlines: “smokestorm.” The person who coined the term is Cliff Mass, professor of atmospheric sciences at the University of Washington and revered Seattle meteorologist.

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