* WHAT...Dangerously hot conditions with peak heat index values between 100 and 115 degrees Fahrenheit. Mild overnight temperatures will also not allow for much reprieve from the hot and humid conditions.
* WHERE...Portions of south central Indiana and east central, north central, northwest, and south central Kentucky.
* WHEN...Until 9 PM EDT /8 PM CDT/ Thursday.
* IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events.