* WHAT...For the Heat Advisories, heat index values in excess of 105 degrees expected.
* WHERE...Portions of central, east central, and southeast Mississippi.
* WHEN...For the Heat Advisory today, until 9 PM CDT this evening. For the Heat Advisory tomorrow, from 10 AM to 8 PM CDT Wednesday.
* IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events.