* WHAT...For the Heat Advisory, heat index values up to 107 this afternoon. For the Extreme Heat Warning, dangerously hot conditions with temperatures around 110 degrees expected Thursday afternoon.
* WHERE...Coke, Irion, Nolan, and Sterling Counties.
* WHEN...For the Heat Advisory, until noon CDT Thursday. For the Extreme Heat Warning, from noon to 10 PM CDT Thursday.
* IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. Hot temperatures and high humidity may cause heat illnesses.