* WHAT...Heat index values up to 108 expected.
* WHERE...Southern Piedmont, Sandhills, and southern and central Coastal Plain.
* WHEN...From 11 AM this morning to 8 PM EDT this evening.
* IMPACTS...Hot temperatures and high humidity may cause heat illnesses.
* ADDITIONAL DETAILS...Rain-cooled air from showers and thunderstorms this afternoon will provide localized relief from the heat.