* WHAT...For the Heat Advisory, heat index values up to 108 expected. For the Extreme Heat Watch, dangerously hot conditions with heat index values up to 110 possible.
* WHERE...Portions of East Arkansas, North Mississippi, Southeast Missouri, and West Tennessee.
* WHEN...For the Heat Advisory, from 11 AM Sunday to 11 AM CDT Monday. For the Extreme Heat Watch, from Monday morning through Thursday evening.
* IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. Hot temperatures and high humidity may cause heat illnesses.