National Weather Service issues heat advisory as heat index nears 110

HAMILTON COUNTY, Tenn. (WDEF) — Just when you thought it couldn’t get any hotter, think again.

The National Weather Service (NWS) in Morristown has issued a heat advisory from 12:00 p.m. Monday, July 28, 2025 to Tuesday, July 29, at 8:00 p.m. for the Central and Southern Tennessee Valley, as well as the southern plateau.

The NWS says the heat index could reach up to 108 degrees…

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