* WHAT...Heat index values up to 103.
* WHERE...Autauga, Bibb, Blount, Calhoun, Cherokee, Chilton, Coosa, Dallas, Elmore, Etowah, Fayette, Greene, Hale, Jefferson, Lamar, Lowndes, Marengo, Marion, Montgomery, Perry, Pickens, Shelby, St. Clair, Sumter, Talladega, Tallapoosa, Tuscaloosa, Walker, and Winston Counties.
* WHEN...Until 9 PM CDT Saturday.
* IMPACTS...Hot temperatures and high humidity may cause heat illnesses.