Heat Advisory

* WHAT...For the Extreme Heat Warning, dangerously hot conditions with heat index values up to 110. For the Heat Advisory, heat index values up to 106 expected.

* WHERE...Antelope, Cedar, Knox, and Pierce Counties.

* WHEN...For the Extreme Heat Warning, until 7 AM CDT Monday. For the Heat Advisory, from 7 AM to 10 PM CDT Monday.

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

* ADDITIONAL DETAILS...Temperatures will remain hot on Tuesday, but maximum heat indices will slip 10-20 degrees.