Extreme Heat Warning

* WHAT...Dangerously hot conditions with heat index values up to 99 expected.

* WHERE...In Minnesota, Southern Cook and Southern Lake Counties. In Wisconsin, Ashland, Iron, and Sawyer Counties. This includes the Tribal Lands of the Lac Courte Oreilles Reservation, the Grand Portage Reservation, the Bad River Reservation and the northwestern area of the Lac du Flambeau Band. Other locations including Madeline Island.

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

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