Extreme Heat Warning

* WHAT...Dangerously hot conditions with heat index values up to 98 expected.

* WHERE...In Minnesota, Southern Cook and Southern Lake Counties. In Wisconsin, Iron and Sawyer Counties. This includes the Tribal Lands of the Lac Courte Oreilles Reservation, the Grand Portage Reservation and the northwestern area of the Lac du Flambeau Band.

* WHEN...From 11 AM Sunday to 1 AM CDT Tuesday.

* IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events.

* ADDITIONAL DETAILS...Little to no relief from the heat is possible Sunday night as continued very warm heat indices in the 70s are forecast Sunday night.