* WHAT...For the Extreme Heat Warning, dangerously hot conditions with heat index values up to 111. For the Heat Advisory, heat index values up to 106 expected. * WHERE...Portions of central, east central, south central, and southeast Kansas. * WHEN...For the Extreme Heat Warning, until 9 PM CDT Monday. For the Heat Advisory, from 9 PM Monday to 8 PM CDT Tuesday. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. Hot temperatures and high humidity may cause heat illnesses.