* WHAT...Dangerously hot conditions with heat index values up to 105. Heat index values over central WI will reach 95 to around 100.
* WHERE...Marathon, Portage, Waushara, Wood, Calumet, Winnebago, Brown, Outagamie, Shawano, and Waupaca Counties.
* WHEN...Until 7 PM CDT this evening.
* IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events.