Heat Advisory

* WHAT...Heat index values mainly as high as 105 to 110 degrees during the afternoon and early evening hours. The overall-highest readings are currently forecast to occur on Sunday.

* WHERE...Mitchell, Osborne, and Rooks Counties.

* WHEN...From noon today to 10 PM CDT Monday.

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

* ADDITIONAL DETAILS...Overnight low temperatures on tonight and Sunday night will provide only limited relief from the heat, dropping no lower than the low to mid 70s.