National Geographic: Summertime heat waves in the United States tend to be preceded two weeks before by a distinctive atmospheric circulation pattern, climate models suggest.
The finding, detailed in this week’s issue of the journal Nature Geoscience, could lead to improved probability forecasts of U.S. heat waves beyond the 1-week weather forecast range.
“We think once this pattern forms, it favors the formation of heat waves over the U.S.,” explained Haiyan Teng, a climate scientist at National Center for Atmospheric…

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