Heat Advisory issued August 25 at 2:17PM CDT until August 27 at 8:00PM CDT by NWS St Louis MO

* WHAT...Heat index values up to 109 expected.

* WHERE...Portions of south central and southwest Illinois and east
central Missouri.

* WHEN...From noon to 8 PM CDT Tuesday.

* IMPACTS...Hot temperatures and high humidity may cause heat
illnesses.