How a heat dome is pushing extreme temperatures to new heights in the West

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Friday, June 18, 2021

The heat wave, like most, is the result of a sprawling zone of high pressure popularly known as a heat dome. Common in summer, heat domes are often found over the Four Corners region of the Southwest United States, where intense heating occurs over deserts. However, the heat dome wreaking havoc across the western United States this week is striking for its incredible strength, geographic scope and persistence. Evidence suggestshuman-caused climate change is making these heat domes more intense over time.

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