Heat Advisory

* WHAT...For the Heat Advisory, heat index values up to 100 expected. For the Extreme Heat Warning, dangerously hot conditions with heat index values of up to 106 expected. Lows tonight in the 70s.

* WHERE...In Minnesota, Benton, Sherburne, Stearns, Chisago, Isanti, and Goodhue Counties. In Wisconsin, Polk, Pierce, and St. Croix Counties.

* WHEN...For the Heat Advisory, until 11 AM CDT Sunday. For the Extreme Heat Warning, from 11 AM to 9 PM CDT Sunday.

* IMPACTS...Heat-related illnesses increase significantly during extreme heat and high humidity events. Hot temperatures and high humidity may cause heat illnesses.