However, a deep freeze, thanks to the polar vortex dipping down from Siberia, is bringing an even harsher arctic blast to million Americans this week. Maps show what to expect as the cold front ...

The most potent blast will enter the north-central U.S. on Friday, the National Weather Service warned, before roaring across much of the rest of the nation over the weekend. Arctic air will ...

GRAND RAPIDS, Mich. (WOOD) — Another blast of very cold air is expected to sweep down from the Arctic and into the Great Lakes starting Saturday night. While the forecast is still several days out, ...