* WHAT...Heat index values of 105 to 108 degrees expected.
* WHERE...Portions of northeast North Carolina and central, east central, north central, south central, and southeast Virginia.
* WHEN...Until 8 PM EDT Thursday.
* IMPACTS...Hot temperatures and high humidity may cause heat illnesses.
* ADDITIONAL DETAILS...Overnight lows in the mid 70s will not provide much relief from hot daytime temperatures.