Dangerous heat will be followed by storms with damaging winds that could hit 65 miles per hour as a frontal system nears the Northeast. Heat-index values (combination of the temperature and humidity) on Friday,

The National Weather Service office in Mobile, Alabama, issued a heat advisory in Escambia, Santa Rosa and Okaloosa counties between 10 a.m. and 7 p.m. Monday. Heat index values are forecast to reach as high as 109℉ in portions of south central and southwest Alabama, northwest Florida and southeast Mississippi.

Dangerous heat peaked today for millions in the central United States as a heat dome in summer’s hottest month lives up to its reputation — but sauna-like conditions are only just beginning for areas farther east.

NWS expects the heat value to go up to 110 degrees. The organization warns that hot temperatures, coupled with humidity, may cause heat illness. Precautionary measures provided by NWS include drinking plenty of water, staying out of the sun and staying in air-conditioned rooms.

Forget about any worries of tropical weather today. Instead pay attention to the heat: temperatures in Jacksonville could feel as high as 113 degrees.

With a stretch of VERY hot weather ahead for the rest of this month into August, it is a good idea to look at how we measure the heat stress on your body.

The heat index is expected to be over 100 on July 23, as the Green Bay area is forecast to get temperatures up to 93, according to the National Weather Service Green Bay. With temperatures in the 90s and high humidity, the heat index for July 23 is 106 degrees.

The heat index, or apparent temperature, combines air temperature and humidity to indicate how hot it feels to the body. High humidity slows sweating, the body's natural cooling system, making temperatures feel hotter. The National Weather Service provides resources like a heat index calculator and chart to determine local heat index values.