Skip to main content
  1. News
  2. Top News

Polar vortex breaks apart and descends into U.S. with historic cold weather

See also

The polar vortex is responsible for this historic cold in the nation today and how it settled over the U.S. has to do with warming Arctic temperatures, suggest NOAA scientists. Temperatures have plummeted in the nation and wind chills in some places in the U.S. are as cold as 70 below zero, according to The Business Insider on Jan. 5.

The spinning winds of the polar vortex of more than 100 mph typically keep the cold weather over the Arctic, but when the temperatures at the Arctic warm, the polar vortex weakens. This causes the polar vortex to break apart and fling parts of this cold dense air over other areas of the globe.

It is a piece of the polar vortex that is covering a large part of the nation today.

A polar vortex is the equivalent of a tropical hurricane in structure. There’s a calm center with winds whipping around the center at great speed. In this case it is not tropical, it is frigid air circling the Arctic with winds of more than 100 mph.

The weakening of the vortex means that conditions are just right for the U.S. to experience this weather pattern that the nation is experiencing today.

This whirlpool of dense and unbearably frigid air descended over parts the U.S. last week. This weather pattern is spreading across the nation and expected to encompass a large part of the U.S. in the next few days.

The nation saw this same weather pattern back in 2009 when parts of the Midwest saw temperatures drop to -22F.

Advertisement

News

  • Baseball Hall of Fame
    The Baseball Hall of Fame in Cooperstown welcomes six new inductees
    Video
    Video
  • 2012 do-over
    If we were to re-do the 2012 election, a new poll suggests Romney would win
    Politics
  • Boko Haram
    Boko Haram kidnaps the wife of the vice prime minister of Cameroon
    World News
  • Ceasefire breaks
    Israel's Benjamin Netanyahu claims Hamas broke another brief ceasefire
    Gaza
  • Close call with CME
    Scientists tell how Earth survived a giant solar flare back in 2012
    Space
  • Comic-Con
    What's going on at Comic-Con? Get all the latest updates here
    Comic-Con

Related Videos:

  • Fistbump
    <div class="video-info" data-id="518344198" data-param-name="playList" data-provider="5min" data-url="http://pshared.5min.com/Scripts/PlayerSeed.js?sid=1304&width=480&height=401&playList=518344198&autoStart=true"></div>
  • UFO sighting over Toronto stirs residents
    <iframe width="560" height="315" src="//www.youtube.com/embed/80ZXXF8hwVw?VQ=HD720&amp;allowfullscreen=true&amp;autoplay=1"></iframe>
  • Philadelphia carjackers: Help cops find men who jacked SUV and killed 3 kids
    <iframe width="560" height="315" src="//www.youtube.com/embed/GDvcg8iAuis?VQ=HD720&amp;allowfullscreen=true&amp;autoplay=1"></iframe>