* WHAT...Heat index values in excess of 105 degrees and peaking around 110 degrees.
* WHERE...Portions of southeast Arkansas, northeast Louisiana, and much of Mississippi.
* WHEN...Until 8 PM CDT Monday.
* IMPACTS...High temperatures and high humidity may cause heat related illnesses.
* ADDITIONAL DETAILS...Overnight low temperatures are expected to range from the mid to upper 70s through the same time frame.