With extreme cold continuing on Tuesday, hundreds of schools in Minnesota and Wisconsin have announced closures and delays.Minneapolis Public Schools, St. Paul Public Schools, Shakopee Public Schools,

Dangerously cold air that has settled across the Upper Midwest this week has prompted some school districts in Minnesota — including Minneapolis and St. Paul — to cancel classes on Tuesday, Feb. 18.

An extreme cold watch is in place, with wind chills of -45 possible in Greater Minnesota, and -34 in the Twin Cities.