With the excessive heat and humidity expected to impact the area the rest of the week, the Heat Advisory has been extended through Friday at 8 PM. An Excessive Heat Warning has been issued for counties along and west of I-65, including Madison County until 8 PM Friday. All counties in north Alabama along with southern middle Tennessee could observe heat index values over 100 degrees through Friday.

90-Degree Days so far this year reach 50 in Huntsville

Temperatures will soar to the upper 90s with dew points in the mid-70s. The combination of hot air in place and high humidity will support heat indices ranging from 105 to 114 degrees in some cities. It will be dangerously hot through the end of the week, so it will be crucial to practice heat safety.

A Heat Advisory is issued if the high temperature is forecast to reach between 100 and 104 degrees or the heat index value is forecast to range from 105 to 109 degrees. An Excessive Heat Warning is issued when the heat index values are forecast to reach 110 degrees or higher.

Heat Advisory vs. Excessive Heat Warning – What’s the difference?

With excessive heat and humidity in the forecast through much of the week, it is important to practice heat safety. Wear light-weight, loose-fitting clothing, drink plenty of water, and take frequent breaks if you have to be outdoors.

Why We Will Experience The Heat This Week:

An area of high pressure will continue to build across much of the country through the end of the week. This heat dome will lead to a continuous surge of hot air and moisture in the region. With deep tropical moisture in place, the dew point values are forecast to climb well into the 70s on Wednesday and Thursday.

This combination of hot air and high humidity will lead to high heat index values through the end of the week. Wednesday through Friday look to be the hottest days this week with temperatures potentially nearing 100 degrees in some locations.

With the potential for more heat alerts to be issued this week, stick with the Weather Authority for the latest.