Extreme Heat Warning

* WHAT...For the Heat Advisory, heat index values up to 110. For the Extreme Heat Warning, dangerously hot conditions with heat index values up to 114 expected.

* WHERE...In Arkansas, Lee AR and Phillips Counties. In Mississippi, Coahoma, Quitman, Tallahatchie, and Tunica Counties.

* WHEN...For the Heat Advisory, until 8 PM CDT this evening. For the Extreme Heat Warning, from 11 AM to 8 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.