The Arctic Oscillation is expected to be in a negative phase next week, which would allow cold air from the North Pole to ...

Meteorologists warn that the coldest burst of Arctic air this season is coming to put an icy and prolonged exclamation point ...

A polar vortex dipping down from Siberia is bringing a cold front with frigid temperatures to millions Americans. See maps of the arctic blast.

As the Arctic rapidly warms, the temperature difference between the polar region and lower latitudes decreases, which weakens ...

A blast of Arctic air is expected to arrive in Mississippi soon as the Arctic jet stream pushes farther South than usual and ...

Freezing temperatures and low wind power production will put further pressure on Europe’s strained energy market, as natural ...

The jet stream typically acts as a barrier to keep the polar vortex contained near the Arctic, but at times, some of the vortex can break off or move south, bringing unusually cold weather into ...

These severe cold events occur when the polar jet stream – the familiar jet stream of winter that runs along the boundary between Arctic and more temperate air – dips deeply southward ...

As the jet stream swung south, it brought with it an extremely cold air mass from the Arctic. This cold air mass then hit the unusually warm Gulf of Mexico, which resulted in the development of a ...

Commercial flights bound for Europe have been taking off late from the States but arriving on time or early, thanks to a more powerful jet stream, strengthened by the arctic air mass that settled ...

So, that's why jet streams are important.” The polar jet stream and polar vortex are two rings of fast-moving air around the Arctic, which play a large role in world weather patterns ...