* WHAT...Heat index values up to 105 expected.
* WHERE...Portions of southeast Arkansas, northeast Louisiana, and central, east central, north central, northwest, south central, southeast, southwest, and west central Mississippi.
* WHEN...From 10 AM Saturday to 7 PM CDT Monday.
* IMPACTS...Hot temperatures and high humidity may cause heat illnesses.
* ADDITIONAL DETAILS...Little relief is expected overnight.