The National Weather Service has issued a HEAT ADVISORY until 9:00PM EDT. * WHAT...Heat index values up to 105. * WHERE...Clinton, Hamilton, Hancock, Shelby, and Carroll Counties. * WHEN...Until 9 PM EDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.