It’s a pattern responsible for holding back the coldest temperatures on the planet. The lowest readings ever recorded in Canada and around the northern hemisphere occurred when this Arctic feature ...

High above the North Pole, in a slice of atmosphere rarely noticed and even less understood, a transformation is underway. Over the next 10 days, changes in the stratosphere will upend weather ...

It’s really, really cold again — as the US shivers through at least the eighth blast of air from the Arctic this winter. Winter, which is warming faster than any other season for much of the US, seems ...

Nearly all of New England has seen its share of frigid cold days and record mountain snow so far this November — and looking ahead, we’re about to get hit with another blast of Arctic air from a ...

An unusually strong disruption in the upper atmosphere is setting the stage for a winter pattern that could lock much of the United States into bitter, prolonged cold. Forecasters are tracking a polar ...

Maddy has a degree in biochemistry from the University of York and specializes in reporting on health, medicine, and genetics. Maddy has a degree in biochemistry from the University of York and ...

It seems like you cannot mention cold weather in the fall and winter without coming across the phrase “polar vortex.” Meteorologists often refer to this weather element as a potential culprit behind ...

In an early sign of the winter weather that's coming, the dreaded polar vortex is making news yet again. The polar vortex is "ramping up from its summer slumber," said meteorologist Judah Cohen in an ...

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