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\f0\fs24 \cf0 Arctic blast grips North America\
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The polar vortex that brought record low temperatures to the U.S. and Canada earlier this year is affecting weather conditions again, bringing an outbreak of Arctic air likely to last for days\
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Polar Vortex: Persistent, large-scale cyclone that circles North Pole\
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ALASKA\
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Jet stream\
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CANADA\
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UNITED STATES\
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MEXICO\
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Polar Vortex: Persistent, large-scale cyclone that circles North Pole knocked further south by remnants of Typhoon Nuri\
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Jet stream:Pushed south\
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Warm and dry\
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-10\'b0C\
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-5\'b0C\
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5\'b0C\
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Sources: accuweather.com, Google Earth, wire agencies\
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