Extreme Heat Warning: Chicot; East Carroll; Madison; Tensas; Bolivar; Sunflower; Leflore; Washington; Humphreys; Holmes; Issaquena; Sharkey; Yazoo; Madison; Warren; Hinds; Rankin; Claiborne; Copiah; Simpson; Jefferson

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Extreme Heat Warning — Chicot; East Carroll; Madison; Tensas; Bolivar; Sunflower; Leflore; Washington; Humphreys; Holmes; Issaquena; Sharkey; Yazoo; Madison; Warren; Hinds; Rankin; Claiborne; Copiah; Simpson; Jefferson Severity: Severe. Certainty: Likely. * WHAT...For the Heat Advisory, heat index values up to 110. For the Extreme Heat Warning, dangerously hot conditions with heat index values of 110 or greater expected. * WHERE...Portions of southeast Arkansas, northeast Louisiana, and central, north central, northwest, southwest, and west central Mississippi. * WHEN...For the Heat Advisory, until 10 AM CDT Wednesday. For the Extreme Heat Warning, from 10 AM to 9 PM CDT Wednesday. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS...The threat for dangerous heat continues through the end of this week. Additional heat advisories may be needed.