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Polar Vortex is fading away for summer, but leaves cool air in its die-off

Polar Vortex is fading away for summer, but leaves cool air in its die-off Updated Apr 29, 2021; The Polar Vortex has weakened over the past two weeks, and is now in its last stage before disappearing for summer. But the final die-off is having an opposite effect of what you might think happens in the last days of the Polar Vortex. Here is a forecast animation showing the stronger Polar Vortex quickly weakening. The Polar Vortex is more easily visible at the beginning of this animation, which is April 29. As the circulation around the Polar Vortex weakens, we can see the stretching of the vortex to an area covering Alaska to the Great Lakes by May 10. It might be easier for you to spot the Polar Vortex by looking for the darker blue circular area in northern Canada.

Big winter snows in the North could be fueled by Arctic sea ice loss

Big winter snows in the North could be fueled by Arctic sea ice loss A new study finds a direct link between an extreme snow event in Europe and declining Arctic sea ice and suggests it could be part of a pattern. ByMadeleine Stone Email In mid-February 2018, a strong high-pressure weather system slid over Scandinavia, bringing cold easterly winds that plunged Europe into a historic deep freeze. Arctictemperatures gripped the continent for weeks; snow fell as far south as Rome. In the British Isles, early March blizzards produced 25-foot snow drifts. New research suggests that this astonishing cold wave, dubbed the Beast from the East, was supercharged with snow thanks in part to a dearth of sea ice in the Barents Sea, off the Arctic coasts of Norway and Russia. It points to a different and poorly studied way in which declining Arctic sea ice can impact the weather further south distinct from the meandering jet stream phenomenon that has gotten so much press.

Polar Vortex forecast shows winter is heading for the exits

Polar Vortex forecast shows winter is ‘heading for the exits’ Updated Mar 17, 2021; The Polar Vortex forecast over the next two weeks is showing the weakening that usually leads to a final warming and disappearance of the Polar Vortex until next winter. At the same time, the Polar Vortex shows one sign of being able to deliver one last blast of cold. Judah Cohen, Climatologist at AER, A Verisk Business, has studied the Polar Vortex and long-range forecast for over 20 years. He says the Polar Vortex is ‘heading for the exits.’ Cohen cautions though that he sees one Polar Vortex condition that could bring one last bout of colder than normal temperatures. Cohen calls this condition a ‘stretching of the Polar Vortex.’ The stretching is slightly indicated by computer modeling to occur over the next two weeks. When Polar Vortex stretching occurs, Cohen says cold air can move from Siberia across the North Pole and into eastern Canada.

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