Extreme Heat Warning: Lauderdale; Colbert; Franklin; Lawrence; Limestone; Madison; Morgan; Marshall; Jackson; DeKalb; Cullman; Moore; Lincoln; Franklin

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Extreme Heat Warning — Lauderdale; Colbert; Franklin; Lawrence; Limestone; Madison; Morgan; Marshall; Jackson; DeKalb; Cullman; Moore; Lincoln; Franklin Severity: Severe. Certainty: Likely. * WHAT...For the Extreme Heat Warning, dangerously hot conditions with heat index values reaching 109 to 113. For the Heat Advisory, heat index values up to 109 expected. * WHERE...Portions of north central, northeast, and northwest Alabama and southern middle Tennessee. * WHEN...For the Extreme Heat Warning, until 7 PM CDT Thursday. For the Heat Advisory, from 7 PM Thursday to 7 PM CDT Friday. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. Hot temperatures and high humidity may cause heat illnesses.