Midwest cold wave....

More records being set...

Residents of the upper Midwest bundled up or just stayed inside Tuesday as a wave of bitterly cold air barreled south out of the Arctic, following on the heels of a fast-moving blizzard.

Some schools closed because of the cold and temperatures hit the single digits as far south as Kansas and Missouri.

The coldest air spilled across the Canadian prairie into the Dakotas and Minnesota. Grand Forks, N.D., dropped to a record low of 37 degrees below zero Tuesday morning, lopping six degrees off the old record set in 1979, the National Weather Service said.

In northern Minnesota, it was 35 below zero in Roseau and 36 below in Hallock, with wind chills down to 45 below in Hibbing. Just to the north, Winnipeg, Saskatchewan, also hit minus 36, according to Environment Canada.