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2. Explainer: What is the polar vortex and why is it so cold?

   www.aol.com/news/explainer-polar-vortex-why-cold...

   As ominous as the term polar vortex sounds, meteorologists say the phenomenon is not new, nor despite its sound does it refer to a cyclone of cold or a freakishly dangerous storm.

3. What you need to know about the polar vortex

   www.aol.com/heres-know-polar-vortex-165732890.html

   AccuWeather forecasters break down the science behind the polar vortex and how it can influence the weather for locations thousands of miles away. While the name for this phenomenon may sound ...

4. Polar vortex could bring an unfavorable end to Rochester's winter

   www.aol.com/polar-vortex-could-bring-unfavorable...

   The polar vortex is not synonymous with a cold snap. In fact, the stratosphere is 10 to 30 miles above the earth’s surface and above the polar jet stream and other systems that create most ...

5. Polar low - Wikipedia

   en.wikipedia.org/wiki/Polar_low

   Polar lows can be difficult to detect using conventional weather reports and are a hazard to high-latitude operations, such as shipping and gas and oil platforms. Polar lows have been referred to by many other terms, such as polar mesoscale vortex, Arctic hurricane, Arctic low, and cold air depression. Today the term is usually reserved for the ...

6. December 2017–January 2018 North American cold wave

   en.wikipedia.org/wiki/December_2017–January...

   Starting in late December as a result of the southward shift of the polar vortex, extremely cold conditions froze the eastern United States in the last few days of 2017 as well as into the new year. Following a brief respite in mid-January, cold temperatures swung back into the eastern U.S. shortly afterwards.

7. January–March 2014 North American cold wave - Wikipedia

   en.wikipedia.org/wiki/January–March_2014_North...

   Despite the abnormally cold winter over sections of North America and much of Russia, most of the globe saw either average or above-average temperatures during the first four months of 2014. [118] In fact, during the cold wave, North America saw much colder temperatures than Sochi, Russia which during the time was hosting the 2014 Winter Olympics.

8. Global warming likely to cause colder and snowier winters ...

   www.aol.com/news/2014-09-15-global-warming...

   The "polar vortex" that plunged Canada and the U.S. into historical cold last winter is said by researchers to have occurred because melting polar ice changes weather patterns, according to a ...

9. Brace yourself: Sub-zero wind chill and snow coming with ...

   www.aol.com/brace-yourself-sub-zero-wind...

   The polar vortex is a gigantic, circular area of cold air high up in the atmosphere that typically spins over the North Pole (as its name suggests), USA Today previously reported. It's a normal ...