* WHAT...For the Heat Advisory, heat index values up to 109 expected.
* WHERE...Portions of southeast Arkansas, northeast Louisiana, and central, east central, north central, northeast, south central, southeast, and southwest Mississippi.
* WHEN...For the first Heat Advisory, until 9 PM CDT Monday. For the second Heat Advisory, from 10 AM to 9 PM CDT Tuesday.
* IMPACTS...Hot temperatures and high humidity may cause heat illnesses.