* WHAT...Afternoon heat index values as high as 105 to 110 with overnight low temperatures in the 70s.
* WHERE...Portions of north central Kansas and east central and south central Nebraska.
* WHEN...Until 8 PM CDT Saturday.
* IMPACTS...Hot temperatures and high humidity may cause heat illnesses.
* ADDITIONAL DETAILS...Steady south winds (10 to 15 MPH) will provide some relief during the afternoons, although winds will decrease in the evenings each day.