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.

The National Weather Service has issued a heat advisory for coastal northeastern South Carolina as a result of a high heat index through the weekend.

Heat is the deadliest weather threat, according to the National Weather Service’s report on weather-related fatalities. Here's how to stay safe.

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.

The heat index could get as high as 111 in South Florida, with the strongest heat expected along the southern Gulf Coast.

Forecasters have issued a heat advisory for Friday in Miami-Dade, Broward and Palm Beach counties, with temperatures expected to feel like 105 to 111 degrees. The advisory is in effect from 11 a.m. to 6 p.m.

South Florida is shutting down the rain and turning up the thermostat. Sunny and hot conditions are expected on Friday with highs in the low-90s and feels-like numbers at 105 degrees and above. In response to this,

A heat advisory is in effect in Boston and several other Massachusetts communities through 7 p.m. on July 17. The National Weather Service warned of "dangerous heat and humidity" with heat indices soaring to 95 to 100 degrees. Boston Mayor Michelle Wu also declared a heat emergency for the City of Boston from July 16 to 18.

The NWS warns of dangerous heat in East Arkansas, North Mississippi, and nearby areas, advising residents to stay cool and hydrated.