Unseasonable Warmth Across The United States Caused By Several Factors

Record or near-record temperatures continued across much of the United Sates this week. Folks in Chicago and New York City were able to have a picnic during the lunch hour. Seventy-one locations in the Plains and Northeast set records Tuesday, including 81 degrees in Omaha. The cause of the warmth is related to three major factors. The weather is so warm that the famed cherry blossoms in the U.S. capital will reach their peak bloom earlier than expected.

One of the causes is the Madden-Julian Oscillation (MJO), a large-scale disturbance that moves east around the Earth's equator over a period of 30-60 days, influencing rainfall and weather patterns around the world. La Nina and the Arctic Oscillation are factors as well. The La Niña climate pattern is a cooling of tropical ocean water in the Pacific. The Arctic Oscillation is a swinging of high and low atmospheric pressure over the Arctic. The warm conditions will continue across much of the area for the next week.


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  • by WOW Location: Beaufort on Mar 16, 2012 at 01:39 AM
    It's Bush's fault. Ask Obama.
  • by procrastinaton expert Location: hurricane alley on Mar 15, 2012 at 08:55 PM
    great reminder to get going and replace my cooling system before it gets hotter.
  • by ralphie Location: ahoskie on Mar 15, 2012 at 06:13 PM
    for adrienne in case my reply did not go, like often times happens:You know how the wind blows? And you know how cyclones go counter-clockwise while anti-cyclones (high pressure) go clockwise?(in northern hemisphere)... Ok and you know that globally the atmosphere is in constant motion? Swirlies and all that. The arctic jet stream is like a river of air up in high atmosphere... there is also a tropical jet stream. And there is the antarctic jet stream. The patterns of each are in constant motion too. The air within that pattern is moving and the pattern moves and changes shape. LOTS of stuff causes that. Down on the surface of the earth, local things like uneven heating cause wind, when the warmed air rises. The air flows in to replace it. Tropical air rises, and cold air comes along surface from the poles to replace it. The weather- that is, the water cycle, also affect temperature. Anyway, the madden-julian oscillation is a particular pattern in the tropical jet, which if you google it, you can read a lot about. I hope that helped.
  • by ralphie Location: ahoskie on Mar 15, 2012 at 06:06 PM
    Let us also remember the huge record setting solar flares. caused, supernaturally, by carbon dioxide. hahahahaha
  • by Adrienne Location: enc on Mar 15, 2012 at 05:23 PM
    Thought there might actually be an answer. Could someone speak English? Only ever heard of La Nina before. The other two are gibberish, without an explanation that someone other than a meteorologist could understand.
  • by BLAH on Mar 15, 2012 at 03:51 PM
    After all that said(nothing).It might be cold as a witches boob next week.Then what excuse will they use?Probably global warming.Several factors cause our global temperatures to rise but why do they rise to the same temperaturs on other planets in our solar system?Nothing unseasonable about this.This planet has been here for billions of years.A generation is just a blink of an eye to this planet.
    • reply
      by rapper on Mar 15, 2012 at 05:55 PM in reply to BLAH
      simple: Global Warming. Google it to get the straight answers.
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