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Almost 100 million Americans were under National Weather Service extreme heat warnings, advisories or watches on July 23 as a heat dome descened on a swath of the nation and slowly spread East.
A weather warning can be issued for events including tornadoes, hurricanes and blizzards. Here’s what makes people act on — or ignore — those messages.
For millions of us, winter weather has already started. As the winds howl, the snow flies and the temperatures drop, the National Weather Service issues various levels of alerts for wintry weather ...
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