Deep penetration of cold temperatures and a coastal storm will bring bomb cyclone and polar vortex into your newsfeeds.

A powerful storm will develop off the Southeast coast this weekend amid brutal cold. This bomb cyclone will bring snow and strong winds to parts of the East Coast as it moves north.

The greater Philadelphia region will experience no weekend letup in the prolonged cold snap gripping the area.

There are certain weather buzzwords that seemingly come out of nowhere. In recent years, things like the polar vortex, atmospheric river and pineapple express have appeared in national weather ...

Michigan is set for several days of frigid temperatures and heavy lake-effect snow as Arctic air continues its slow march ...

Winter Storm Fern aftermath continues as the East Coast braces for a bomb cyclone and polar vortex, with heavy snow and ...

Thirty kilometers above the Arctic, something unusual is happening. The polar vortex-that massive cyclone of frigid air that normally keeps the cold locked over the North Pole-is weakening and warping ...