* WHAT...Heat index values up to 111 expected.
* WHERE...Portions of Big Bend and Panhandle Florida and south central and southwest Georgia.
* WHEN...For the first Heat Advisory, until 7 PM EDT /6 PM CDT/ this evening. For the second Heat Advisory, from noon EDT /11 AM CDT/ to 8 PM EDT /7 PM CDT/ Thursday.
* IMPACTS...Hot temperatures and high humidity may cause heat illnesses.