Abstract: The numerical extraction of vortex cores from time-dependent fluid flow attracted much attention over the past decades. A commonly agreed upon vortex definition remained elusive since a ...

Boston has seen just one day so far this month where the average temperature was above the seasonal norm, daring me to ask — are you over the cold yet? Astronomical winter hasn’t even arrived (that ...

This comes after record low temperatures were already set on Tuesday in New England. The Polar Vortex is a large, persistent area of low pressure and cold air near the poles and sits about 10-30 miles ...

Add Yahoo as a preferred source to see more of our stories on Google. A map of the polar vortex that is bringing frigid temperatures to parts of the U.S. (AccuWeather) The first of three rounds of ...

Grab your coats, it's getting chilly. A polar vortex broke, and severe temperatures are set to dominate most of the United States, including the Midwest, in the coming days. The polar vortex will ...

A Polar vortex has covered the Philadelphia region under a canopy of frigid temperatures, but many people may not realize what a Polar vortex actually is, and the dangers — like frostbite — such ...

Just a few days into December, an arctic air mass has swept into the United States, bringing subzero morning lows and daytime highs stuck in the teens for 30 million Americans in the Northern Plains, ...

The polar vortex is so back, and in some parts of the country, the weather system will bring with it up to a foot of snow. If “polar vortex” is giving you déjà vu, that’s because we’ve heard it before ...

CLEVELAND — The temperature outside was so cold that your fingers, toes, nose and cheeks felt like they were burning. A harsh Arctic cold wave brought record-breaking temperatures to the United States ...

Scientists are still trying to understand the atmospheric disturbances. A significant change in the atmosphere means the weeks after Thanksgiving could be colder and snowier than normal across ...

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Thanksgiving is less than a week away which means the fall season is nearing its ends. So that means cold weather is approaching and with it comes the weather pattern known as a polar vortex. But what ...