@dr.topazA massive double heat dome is forming over the United States, putting more than 200 million people at risk of dangerously hot and humid conditions.
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Double heat dome US
Photo by @dr.topaz· Jun 28, 2026· Photo 1 of 2· United States
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A weather map graphic shows North America from space with a large red oval labeled "High-pressure circulation" hovering over the Western States. Arrows inside the oval indicate clockwise rotation and downward flow while a white dashed circle outlines the system. Canada, Midwest, and Mexico are labeled on the map.
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