* WHAT...For the first Heat Advisory, heat index values up to 99. For the second Heat Advisory, heat index values up to 98 expected.
* WHERE...Eastern Hillsborough and Interior Rockingham Counties.
* WHEN...For the first Heat Advisory, until 8 PM EDT this evening. For the second Heat Advisory, from 11 AM to 8 PM EDT Friday.
* IMPACTS...Hot temperatures and high humidity may cause heat illnesses.