* WHAT...Heat index values 108 to 111 degrees expected.
* WHERE...Portions of southeast Georgia and southeast South Carolina.
* WHEN...For the first Heat Advisory, until 8 PM EDT this evening. For the second Heat Advisory, from 11 AM to 8 PM EDT Saturday.
* IMPACTS...Hot temperatures and high humidity may cause heat illnesses.
* ADDITIONAL DETAILS...The highest heat index values are expected from noon through 4 PM Today and Saturday. Additionally, isolated showers and thunderstorms each afternoon may provide relief in some areas.