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Aug 10, 2016 3:15 PM

NH1 First Alert Weather: Heat Advisory issued for southern NH due to extreme heat, humidity

NH1 Meteorologist

The combination of heat and high humidity will produce oppressive, dangerous conditions Thursday and Friday.

The National Weather Service has issued a Heat Advisory for all of southern New Hampshire, which will go into effect at noon Thursday and continue through 7 p.m. Friday.

Merrimack, Strafford, Cheshire, Hillsborough, and Rockingham counties are included in the advisory.

A hot, very humid air mass is moving into the region. By Thursday afternoon, temperatures will rise into the middle and even upper 90s.

With the humidity factored in, heat index values will be 100 degrees or higher during the afternoon hours.

Thursday night will be a very mild, muggy night with low temperatures Friday morning no lower than 70 degrees in southern New Hampshire.

Friday will be another hot day with high temperatures in the lower to middle 90s. While not as hot as Thursday, humidity will be higher on Friday, once again resulting in a heat index near 100.

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