Scientists said “heat domes” and related atmospheric events behind extreme weather around the world this week had almost tripled in strength and duration since the 1950s, as tens of millions of people sweltered in “dangerous heat” in parts of the US and Europe.
Temperatures passed 40C in parts of the US as a so-called heat dome — a phenomenon that occurs when a high-pressure system traps heat — took hold across eastern and central states. In Manhattan, temperatures hit 99F (37C) and John F Kennedy airport reached 102F (38.9C).
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