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

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

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

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 headlines. Other WRAL Top Stories Most recently, the term "bomb ...

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. Temperatures in the stratosphere are set to spike by ...