The Tennessee Valley will experience hot and humid conditions through the weekend. High temperatures are forecast to reach the upper 90s to low 100s. High dew point values in the 70s will lead to heat index values between 105 and 110 degrees. A Heat Advisory is in effect for portions of the area until 7 pm Friday, while others have been upgraded to an Excessive Heat Warning.

From the National Weather Service in Huntsville:

…HEAT ADVISORY IN UNTIL 7 PM FRIDAY…

  • WHAT…Heat index values upwards of 109 degrees.
  • WHERE…Franklin, DeKalb, Jackson, Lawrence, Marshall, and Morgan counties in Alabama along with Franklin County in Tennessee.
  • WHEN…Until 7 pm Thursday
  • IMPACTS…Hot temperatures and high humidity may cause heat-related illnesses.
  • PRECAUTIONARY/PREPAREDNESS ACTIONS…Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances!

Take extra precautions if you work or spend time outside. When possible, reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose-fitting clothing when possible. To reduce the risk of heat exhaustion or heat stroke, take frequent breaks. Anyone overcome by heat should be moved to a cool and shaded location.

Hot and humid week ahead

Criteria For Heat Advisory

We will also see hot and humid conditions through the rest of the week with forecast highs in the upper 90s and low 100s. A Heat Advisory is issued by the NWS when the heat index values range from 105 to 109 degrees. This is the case for both Alabama and Tennessee. One thing to watch in the coming days will be if any areas are upgraded to an Excessive Heat Warning. If the heat index reaches over 110 degrees or the air temperature is forecasted over 105 degrees, a warning will be issued.

Heat Safety

It is important to know the symptoms of heat exhaustion and heat stroke. If you think that you or someone else is experiencing symptoms of heat exhaustion you should get to a cool place and try to cool off. If you are experiencing symptoms of heat stroke you should seek emergency medical care.

The Heat Index and How It Impacts You

Take the necessary precautions to protect yourself, your young children, and your pets from this extreme heat. If you have to be outdoors, limit the amount of strenuous work you do. Seek shade or go indoors when needed. Make sure you are drinking plenty of water to stay hydrated! Most importantly, never leave a child or animal in a hot car!