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

“Whether or not climate change is affecting the jet stream has changed over time,” said Pam Knox ... But certainly the fact that the temperature difference between the Arctic and the equator is ...

I received a question from one of my younger readers, which showed a good understanding of weather fundamentals. He ...

A ‘relentless frenzy of storms’ ploughing the United States will pursue its unyielding assault into mid-February. Clashing ...

The vortex is essentially an area of low pressure in the upper layers of the atmosphere over the polar region up north. This ...

How the Polar Vortex Can Bring Arctic Blasts to the U.S. Vast weather patterns can carry blasts of frigid air far from the polar regions—here’s how it works ...

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 ...

The 'arctic express' is set to blast the Eastern US with another round of frigid air this week, sending temperatures plummeting 10 to 20 degrees F below average. The jetstream will carry a blast ...

Millions of Canadians won't be in the deep freeze to kick off February as a forthcoming pattern change will reconfigure air masses in the country ...

Arctic air is making New England feel colder ... At the same time, a weak jet stream, the “conveyor belt” of fast-moving air in the upper atmosphere, further kicked the cold air into motion.