Issue date: 2026-09-09T08:14+00:00
* WHAT...Heat index values up to 109 degrees are expected. * WHERE...All of southern Illinois, southwest Indiana, western Kentucky, and southeast Missouri. * WHEN...From 11 AM CDT /noon EDT/ this morning to 8 PM CDT /9 PM EDT/ this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses.