With over 170 million Americans facing below average temperatures, even colder air may be on the horizon thanks to the ...

Each of these lobes of the Polar Vortex will bring two or three days of bitterly cold, below-normal temperatures. We aren’t ...

Three separate rounds of Arctic air have already swept across the central and eastern United States through mid-December, ...

With the Northern Hemisphere well into the winter months, it may seem like temperatures are cold enough already. However, a deep freeze, thanks to the polar vortex dipping down from Siberia, is ...

The phrase “historic polar vortex” evokes a country locked in ice from the Great Lakes to the Gulf, but the most reliable records show a patchwork of extreme outbreaks rather than a single, weeks-long ...

It's only early November, but here comes the “polar express,” weeks ahead of schedule. A cold blast more typical of early December will stretch from the Northeast all the way down the Atlantic Coast ...