* WHAT...Dangerously hot conditions with heat index values up to around 115 degrees expected, with locally higher values possible.
* WHERE...All of southeast Missouri, and neighboring portions of southern Illinois and far western Kentucky.
* WHEN...Until 7 PM CDT Tuesday.
* IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events.
* ADDITIONAL DETAILS...This Warning is in effect along and west of a line from Fairfield, Illinois, to Cadiz, Kentucky.