Heat Advisory

* WHAT...The threat for widespread dense fog has ended this morning. For the Heat Advisory, heat index values up to 105 expected today through Monday. Sunday, heat index values may briefly exceed 105 along and east of Highway 83.

* WHERE...Custer, Frontier, and Lincoln Counties.

* WHEN...Until 10 PM CDT Monday.

* IMPACTS...Hot temperatures and high humidity may cause heat illnesses.