The jet stream acts like a barrier, keeping the polar vortex in check. When the jet stream is strong, it flows in a straight, stable path because of large differences in air pressure between ...

“The polar vortex has been particularly strong and stable the past few weeks. That has kept the coldest of Arctic air largely confined to the North Pole,” says Mike Bettes, meteorologist with ...

The term “polar vortex” might conjure images of mythical icy storms swirling through the North Pole but in reality it’s a ...

Space exploration missions have revealed that polar vortices aren’t uncommon beyond Earth. They’ve been observed throughout the solar system, on every planet and moon that has enough of an ...

10th polar vortex of the season hits the U.S. Here’s what to know With record snow in New Orleans last month and drought and destructive wildfires in Southern California, this winter has not ...

This year, the strong and stable polar vortex has caused the concentration of more ozone-depleting chemicals than usual, which added to the extreme cold has created the conditions for this ...

Why has April in Chicago been cold so far? A big factor is the disruptions in the polar vortex, even as the “polar vortex season” is winding down, according to NBC 5 Meteorologist Kevin Jeanes.

When the polar vortex is strong and stable, this belt of winds keeps the season’s coldest air locked across the Far North. Occasionally, we’ll see the polar vortex’s circulation weaken and ...

The Polar Vortex in the upper atmosphere has disintegrated after the intense warming of the stratosphere in mid-March. Currently, its remains are traveling eastward across Canada to the United States.

An April cold snap is expected to bring unusually cold temperatures to the eastern half of the US next week. The cold snap could impact new spring vegetation and lead to frost in some areas.

resulting in a more stable southern vortex, with disruptions milder and much less frequent. Public perception to the contrary, outbreaks of the polar vortex in the northern hemisphere—the bitter ...

When the polar vortex is strong and stable, this belt of winds keeps the season’s coldest air locked across the Far North. Occasionally, we’ll see the polar vortex’s circulation weaken and become ...