* WHAT...For the Extreme Heat Warning, dangerously hot conditions with heat index values up to 106. For the Heat Advisory, heat index values up to 103 expected.
* WHERE...Portions of central, east central, southeast, and west central Illinois.
* WHEN...For the Extreme Heat Warning, until 7 PM CDT this evening. For the Heat Advisory, from 11 AM to 7 PM CDT Saturday.
* IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. Hot temperatures and high humidity may cause heat illnesses.