* WHAT...Heat index values up to 105 expected.
* WHERE...Portions of central, south central, and west central Virginia.
* WHEN...From 11 AM this morning to 8 PM EDT this evening.
* IMPACTS...Hot temperatures and high humidity may cause heat illnesses.
* ADDITIONAL DETAILS...Temperatures are expected to be even warmer for Thursday and Friday with potential for hazardous levels of heat to linger through the upcoming holiday weekend.