* WHAT...Dangerously hot conditions with heat index values in excess of 110 degrees and peaking around 115 degrees.
* WHERE...Portions of west, central, north and south Mississippi, southeast Arkansas, and northeast Louisiana.
* WHEN...Until 8 PM CDT Monday.
* IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events.
* ADDITIONAL DETAILS...Overnight low temperatures are expected to range from the mid to upper 70s through the same time frame.