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Dangerous heat continues to grab headlines from the South-Central U.S. to the Northeast.
HERE ARE THE HEALTH RISKS OF EXTREME HEAT
Some 100 million people are under a heat advisory on Wednesday.
Temperatures will be over 100 degrees for many big cities, with plenty of humidity making it feel much worse.
Meanwhile, strong-to-severe thunderstorms will be possible as a cold front slices through the hot, humid air mass over the Great Lakes and Ohio Valley.
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More rain is forecast with the possibility of flooding across the Southwest and southern Rockies, as the summer monsoon season continues.