sub-zero temperatures

WAMC/Pat Bradley

Much of the Northeast is facing blizzard conditions. In the North Country, the main concern is dangerous sub-zero temperatures.

A teeth-chattering cold wave with sub-zero temperatures is expected to keep its icy grip on much of the eastern U.S. into the weekend before seasonable temperatures bring relief.

The polar air mass prompted the National Weather Service to issue wind chill warnings across upstate New York and northern New England.