* WHAT...High temperatures in the mid to upper 90s, with stifling humidity creating Peak Heat Index Values up to around 105 degrees. * WHERE...In Kentucky, Fulton County. In Missouri, Butler, Carter, New Madrid, Ripley, and Stoddard Counties. * WHEN...From 11 AM to 8 PM CDT each day, Monday and Tuesday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.