* WHAT...Heat index values 108 to 112 degrees expected Friday.
* WHERE...Portions of southeast Georgia and southeast South Carolina.
* WHEN...Until 8 PM EDT Friday.
* IMPACTS...Hot temperatures and high humidity may cause heat illnesses.
* ADDITIONAL DETAILS...The highest heat index values are expected from noon through 4 PM Friday. Additionally, isolated showers and thunderstorms each afternoon may provide relief in some areas.