![]() ![]() Scientists reported that the polar vortex has been wandering more often in recent years. There are a number of theories about what might be causing the strange effects people experience at the Vortex, but so far, there is no concrete evidence to support any of them. It's thought that the term "polar vortex" first appeared in an 1853 issue of the magazine Littell's Living Age, the National Oceanic and Atmospheric Administration said. The Oregon Vortex has been studied by scientists, parapsychologists, and skeptics, but no one has been able to definitively say what it is. It can divide into several parts, then get back together again, like the cop in "Terminator 2." ![]() ![]() Its position can determine what part of the USA the Arctic air will invade. The vortex is strongest during the winter and usually weakens or even disappears in the summer. When the polar vortex weakens or even splits, it allows frigid air to escape and push southward toward the USA, which is forecast to happen over the next few days. The stronger the polar vortex, the milder our winter is. When the polar vortex is "strong," cold air is less likely to plunge deep into North America, meteorologist Jonathan Erdman said. It usually keeps the coldest air locked up in the Arctic. The polar vortex is a large area of cold air high up in the atmosphere that normally spins over the North Pole (as its name suggests). In the Chicago area, low temperatures in some spots will be 10 degrees below or colder, while wind chills of 20 to 30 below or even colder will be possible Sunday night into Monday, the service said. The National Weather Service in Chicago said, "The coldest air mass of the season remains on track to arrive this weekend and continue into or through the next work week." When asked whether the cold blast will be from the polar vortex, meteorologist Judah Cohen of Atmospheric and Environmental Research told USA TODAY: "Definitely."Īs is often the case, the core of the bitter cold will be in the Upper Midwest and northern Plains, where wind chill temperatures will plummet as low as 40 degrees below zero in parts of the Dakotas this weekend. The infamous polar vortex is on its way again.īy early next week, much of the nation will see below-freezing temperatures. The cold air "will be dangerous for young children, the elderly and those with respiratory or cardiovascular issues.".The core of the bitter cold will be in the Upper Midwest and northern Plains.By early next week, much of the nation will see below-freezing temperatures. ![]()
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