* WHAT...For the first Heat Advisory, heat index values up to 109 expected. For the second Heat Advisory, heat index values up to 110 expected.
* WHERE...Portions of southeast Arkansas, northeast Louisiana, and central, east central, north central, northeast, northwest, south central, southeast, southwest, and west central Mississippi.
* WHEN...For the first Heat Advisory, until 7 PM CDT this evening. For the second Heat Advisory, from noon to 7 PM CDT Thursday.
* IMPACTS...Hot temperatures and high humidity may cause heat illnesses.