* WHAT...For the Extreme Heat Warning, dangerously hot conditions with heat index values up to 110. For the Heat Advisory, heat index values up to 100 expected.
* WHERE...Portions of central, east central, south central, and southeast Minnesota and northwest and west central Wisconsin.
* WHEN...For the Extreme Heat Warning, until midnight CDT tonight. For the Heat Advisory, from midnight tonight to 9 PM CDT Tuesday.
* IMPACTS...Heat-related illnesses increase significantly during extreme heat and high humidity events. Hot temperatures and high humidity may cause heat illnesses.