As we come out of a sweltering weekend of record-breaking temps across much of the West, a “heat dome” primer seems appropriate. In the words of UCLA climate scientist Daniel Swain, a heat dome “is really just sort of a colloquial term for a persistent and/or strong high-pressure system that occurs during the warm season, with the end result being a lot of heat.” Like we couldn’t have figured that out for ourselves?

 

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