Heat Advisory issued July 25 at 1:09PM CDT until July 28 at 9:00PM CDT by NWS

...HEAT ADVISORY IN EFFECT FROM 11 AM WEDNESDAY TO 9 PM CDT FRIDAY... * WHAT...Heat index values up to 109 expected. * WHERE...Portions of south central, southwest, and west central Illinois. Portions of central, east central, northeast, and southeast Missouri. * WHEN...From 11 AM Wednesday to 9 PM CDT Friday.