Moderate Expected Likely Heat Advisory Heat Advisory issued August 16 at 4:16AM EDT until August 16 at 9:00PM EDT by NWS Louisville KY Aug 16, 4:16 AM → Aug 16, 9:00 PM WHAT: Heat index values up to 109. WHERE: Portions of south central Indiana and east central, northcentral, northwest, and south central Kentucky. WHEN: Until 9 PM EDT /8 PM CDT/ this evening. IMPACTS: Hot temperatures and high humidity may cause heatillnesses. + Read More Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Updated: Aug 16, 11:07 AM Source: NWS Alert