...HEAT ADVISORY IN EFFECT FROM 8 PM THIS EVENING TO 8 PM CDT TUESDAY... ...EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM CDT THIS EVENING... * WHAT...For the Extreme Heat Warning, dangerously hot conditions with heat index values up to 112. For the Heat Advisory, heat index values up to 109 expected. * WHERE...Grant, Lonoke, Prairie, White, Monroe, Arkansas, Desha, Jefferson, and Lincoln Counties. * WHEN...For the Extreme Heat Warning, until 8 PM CDT this evening. For the Heat Advisory, from 8 PM this evening 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. 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. &&