15 August, 2016
The warning will be in effect until 10 p.m. Sunday.
An excessive heat warning is issued when heat and humidity together is said to make it feel over 100 degrees.
According to information from NWS, the combination of hot temperatures and high humidity could lead to dangerously hot conditions, which could quickly lead to heat-related illnesses. In general, spray showers operate on days when the temperature hits 80 degrees or higher.
The heat index is a measure of how hot it feels when relative humidity is factored in with the actual air temperature.More news: Ibrahimovic: 'Something big going on' at Man United
Sunshine will mix with clouds today and there will be the chance for scattered showers and thunderstorms this afternoon and into this evening. Heat index values may reach up to 106. Much like Thursday, inland areas are under a "Heat Advisory" again today. The service said that the elderly, the very young and those without air conditioning will be vulnerable to the heat. Heat stroke is an emergency.
Wear loose-fitting, airy, light colored clothing. The highest heat indices occur usually in the mid to late afternoon.
Actual temperatures should range in the low to mid-90s this weekend, according to Accuweather.
"Boston will certainly be 92, 93, 94, with a pretty high dew point", said meteorologist Bill Simpson with the National Weather Service. The first chance will be overnight tonight into Friday morning. Clearing skies, highs in the mid-80s.