Crank up the air conditioner for the next few days. An excessive heat warning has been issued for Shelby County by the National Weather Service.

The warning is in effect until 7 p.m. Aug. 3 but conditions are likely to persist through Aug. 5.

An excessive heat warning means that a prolonged period of dangerously hot temperatures will occur, according to the alert.

High temperatures will climb above 100 degrees in many areas and heat indices will rise to the 108-115 range.

Overnight lows will not provide much relief as the lows will stay in the mid to upper 70s.

To prevent heat illnesses during this time, drink plenty of fluids, stay out of the sun and check in on elderly relatives and neighbors.