Extreme Heat Watch

* WHAT...For the first Heat Advisory, heat index values up to 108. For the Extreme Heat Warning, dangerously hot conditions with heat index values up to 114 expected. For the Extreme Heat Watch, dangerously hot conditions with heat index values up to 110 possible. For the second Heat Advisory, heat index values up to 109 expected.

* WHERE...Portions of central, eastern, and north central Arkansas.

* WHEN...For the first Heat Advisory, until noon CDT Thursday. For the Extreme Heat Warning, from noon to 8 PM CDT Thursday. For the Extreme Heat Watch, from Thursday evening through Friday evening. For the second Heat Advisory, from 8 PM Friday to 8 PM CDT Saturday.

* IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. Hot temperatures and high humidity may cause heat illnesses.