* WHAT...For the first Heat Advisory, heat index values in excess of 105. For the second Heat Advisory, heat index values up to 108 expected.
* WHERE...Portions of southeast Arkansas, northeast Louisiana, and central, north central, northwest, southwest, and west central Mississippi.
* WHEN...For the first Heat Advisory, until 8 PM CDT this evening. For the second Heat Advisory, from noon to 8 PM CDT Tuesday.
* IMPACTS...Hot temperatures and high humidity may cause heat illnesses.