The conditions, including high humidity, could cause heat-related illnesses, according to the warning. “The long duration of this event is likely to worsen heat-related impacts,” the National Weather Service stated.

Memphis faces a heat wave with heat index values up to 109°F, prompting advisories for precautions against potential heat illnesses.

The Treasure Coast is under a heat advisory and many areas at “major heat risk” with heat index values expected to reach up to 108 degrees, according to the National Weather Service.

Saturday's forecast also advises there is a slight risk of severe storms, with damaging wind gusts, over the northern area of central North Carolina on Saturday night. The highest risk is between 3 and 11 p.m. The heat wave may continue on Sunday, though a heat advisory has not yet been issued.

A heat advisory was issued for Brevard County and the surrounding areas of Central Florida on July 18 as National Weather Service meteorologists warn of above-normal temperatures heading into the weekend.

Charlotte and surrounding areas are under a heat advisory Saturday with high temperatures expected throughout the weekend. The National Weather Service issued a heat advisory for noon through 8 p.m. Saturday for Mecklenburg, Cabarrus and Union counties. The heat index may reach 105 degrees, the weather service warned.

Dangerous heat and humidity is on tap through the weekend!Highs will be in the upper 90s with 100 possible in spots...meanwhile the heat index could be over 10

Friday's heat index values will hover around 105 for Broward and Miami-Dade counties, but "feels like" temperatures could climb to as high as 111 degrees in parts of Southwest Florida. The heat advisory is in effect from 11 a.m. to 6 p.m.