As one blast of Arctic air pushes out to sea, already a new surge of cold air, driven by a breakdown of the polar vortex, is likely to expand from central Canada and through the midwestern and eastern United States.

Storms, some of which may bring snow, are expected to accompany a push of colder air this week, and the next storm is expected to move through the eastern United States from late…

An arctic blast is on track to bring freezing temperatures to central and eastern states.

The beginning of December has meant lots of snow and low temperatures in the Midwest and Northeast United States.

As one blast of Arctic air pushes out to sea, already a new surge of cold air, driven by a breakdown of the polar vortex, is likely to expand from central Canada and through the…