* WHAT...For the Extreme Heat Warning, Dangerously hot conditions with heat index values up to around 115 degrees expected, with locally higher values possible. For the Heat Advisory, heat index values up to around 105 degrees expected, with locally higher values possible. * WHERE...All of southwest Indiana, and neighboring portions of southeast Illinois, northwest Kentucky, and the Pennyrile region of western Kentucky east of the Lakes. * WHEN...For the Extreme Heat Warning, until 7 PM CDT /8 PM EDT/ this evening. For the Heat Advisory, from 7 PM CDT /8 PM EDT/ this evening to 7 PM CDT /8 PM EDT/ Tuesday. * IMPACTS...Extreme heat and humidity will significantly increase the potential for heat related illnesses, particularly for those working or participating in outdoor activities. * ADDITIONAL DETAILS...This Warning and Advisory is in effect for their respective times along and east of a line from Albion, Illinois, to Princeton, Kentucky.