* WHAT...For both heat advisories, heat index values up to 110 expected.
* WHERE...Portions of southeast Arkansas, northeast Louisiana, and central, east central, south central, southeast, and southwest Mississippi.
* WHEN...For the first Heat Advisory, until 9 PM CDT this evening. For the second Heat Advisory, from 10 AM to 7 PM CDT Thursday.
* IMPACTS...Hot temperatures and high humidity may cause heat related illnesses.