Are schools closed in US due to polar vortex weather phenomenon? What you need to know
polar vortex has returned to the US and frostbite-inducing temperatures are blasting millions of Americans. A relentless 'life-threatening' cold wave has gripped the central and northern US which has not just caused freezing temperatures and snowstorms but also heartbreaking loss. Families are mourning loved ones as the extreme weather, driven by a polar vortex, has already claimed at least 14 lives.
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Meteorologists had predicted that parts of the US would experience the 10th and coldest polar vortex event this season. Weather forces in the Arctic are pushing chilly air that usually stays near the North Pole into the U.S. and Europe.
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Here are key things you need to know about Polar Vortex in US:
-The term «polar vortex» usually refers to the gigantic circular upper air weather pattern in the Arctic region. It is a normal pattern that is stronger in the winter and keeps some of the coldest weather bottled up near the North Pole. However, at times some of the vortex can break off or move south, bringing unusually cold weather south and permitting warmer weather to creep up north.
The polar vortex “always” exists near the poles, it weakens in summer and strengthens in winter. The term «vortex» refers to the counterclockwise flow of
