* WHAT...Dangerously hot conditions with heat index values up to 115 expected.
* WHERE...In Arkansas, Lee AR, Phillips, and St. Francis Counties. In Mississippi, Coahoma, Quitman, Tallahatchie, and Tunica Counties.
* WHEN...From 10 AM Monday to 9 PM CDT Tuesday.
* IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events.