Heat Advisory: Marion; Lamar; Fayette; Winston; Walker; Blount; Etowah; Cherokee; Pickens; Tuscaloosa; Jefferson; Shelby; St. Clair; Sumter; Greene; Hale; Perry; Bibb; Chilton

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Heat Advisory — Marion; Lamar; Fayette; Winston; Walker; Blount; Etowah; Cherokee; Pickens; Tuscaloosa; Jefferson; Shelby; St. Clair; Sumter; Greene; Hale; Perry; Bibb; Chilton Severity: Moderate. Certainty: Likely. * WHAT...Afternoon heat index values 105 to 109. * WHERE...Bibb, Blount, Cherokee, Chilton, Etowah, Fayette, Greene, Hale, Jefferson, Lamar, Marion, Perry, Pickens, Shelby, St. Clair, Sumter, Tuscaloosa, Walker, and Winston Counties. * WHEN...Until 9 PM CDT Thursday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses.