MINNEAPOLIS (WCCO) — With the return of bitterly cold temperatures and brutal wind chills, Anoka-Hennepin School District has announced they are canceling classes for Thursday.

Thursday’s wind chill is estimated to be between 35 and 40 degrees below zero.

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All activities and programs will also be closed throughout the district.

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The school district announced the closure on its website with a weather alert banner at the top of the page.

“The decision to close schools for students and staff is based on the official announcement of the U.S. Weather Service, which states, ‘Exposed skin may freeze in as little as five to 10 minutes … The combination of very cold air and strong winds will create dangerously low wind chill values. This will result in frost bite and lead to hypothermia or death if precautions are not taken.’ Staff should not report to work; buildings will remain closed,” the alert states.

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Temperatures are expected to rise by Thursday afternoon, so school will resume on Friday, according to the district.