A heat dome over the eastern half of the U.S. is causing severe heat conditions affecting tens of millions. More than 80 million people are at major or extreme risk on July 25, with risks rising to nearly 150 million by July 28. Heat domes trap warm air and often lead to record-breaking temperatures and sunny skies. This particular event is notable for its longevity, as conditions are expected to last until around July 31, creating an excruciating experience for those affected.
A lingering heat dome over the eastern U.S. is affecting tens of millions, with over 80 million at risk of heat effects on July 25.
The southeastern U.S. will experience several days of record-setting heat, impacting nearly 150 million people by July 28.
Heat domes occur when high-pressure air traps heat and lead to warmer temperatures, sunnier days, and reduced precipitation.
Current heat conditions are expected to persist through July 31, making this heat dome long-lived even by typical standards.
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