The Arctic Oscillation is a metric used to describe the strength of the polar vortex, or mass of arctic air that rotates ...

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

The displaced polar vortex will bring prolonged periods of cold to the eastern portion of the Lower 48 through the end of ...

Syracuse is expecting a period of cold days and increased snow chances due to a 'stretching' of the Polar Vortex in the ...

The first cold wave will reach the East Coast on Thursday, followed by another surge of frigid air this weekend and more next ...

After several years of milder winters, this year Europe is again experiencing a “real” winter. There is snow cover across many European countries, and temperatures are below zero. This led to problems ...

Those struggling with high heating bills due to relentless cold and sore backs from shoveling snow in the Midwest and ...

Last month’s prolonged Arctic outbreak caused the coldest December in 15 years. Winter-weary Berkshire residents are ...

Scientists say these bone-chilling days do not mean that climate change took a vacation. In fact, instead of contradicting ...

Stunning satellite images show the north of Scotland turned white by snow. Some places around the country have seen as much as 50cm of snow with drifts of around a metre. Loch Glascarnoch in the ...

When the polar vortex stumbles, the weather at ground level can pivot from mild to brutal in a matter of days. A circulation that usually spins quietly above the pole can suddenly send lobes of Arctic ...