* WHAT...Very hot with peak heat index values up to near 110 degrees.
* WHERE...All of southwest Indiana, western Kentucky, southeast Missouri, and southern Illinois excepting Perry County IL, where a Warning is in effect.
* WHEN...Until 8 PM CDT /9 PM EDT/ Thursday.
* IMPACTS...Hot temperatures and high humidity may cause heat illnesses.
* ADDITIONAL DETAILS...Daily heat index values will remain elevated in the triple digits into and through the weekend.