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July 22nd, 2016

‘Heat dome’ moving east; 100 million face life-threatening temps

The “heat dome” covering more than 100 million people in 26 states is now moving east, bringing what could be a very tough weekend to much of the country. NBC’s Blake McCoy reports for TODAY from Chicago, and Al Roker forecasts whether any sign of relief is in sight. (Run time: 3:49)

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