Once in a blue moon!

bluemoonAnd I’m not talking about the beer. Did you know that a blue moon only happens once every 2.7 years? That’s because every month usually only has one full moon. Not so this year! December 2009 actually has two full moons in the same month. This is called a blue moon. And contrary to popular thought this has nothing to do with the color, but rather the rarity of the event. What’s even neater with this month’s blue moon is the fact that it will occur on New Year’s Eve! That’s right, we’ve not only got a full moon on NYE, but a blue moon! So how rare is that? The last time we had a blue moon on New Year’s Eve, it was 1990. That was before Michael Jordan and the Bulls won a championship, the words “Gulf War” weren’t common terms, and modern doppler radar wasn’t in operation yet! And if you’re wondering when the next blue moon will occur on New Year’s Eve, the date will be 2028. After that, we’ll be waiting in our rockers for New Year’s Eve 2047. -ES


Posted under space

This post was written by qni_it on December 28, 2009

14 Comments so far

  1. WI Weather Buff December 28, 2009 6:21 PM

    So… that would appear to be every 19 years?

    Hmm. Interesting.

  2. WI Weather Buff December 28, 2009 6:37 PM

    El Nino?

    So back last October you predicted an El Nino winter featuring above average temps and below average precip in January.


    Are we still looking forward to that prediction, or has that changed?

  3. Eric Sorensen December 28, 2009 6:43 PM

    Wi Weather Buff: Interesting looking at the graphs we posted that there has been much accuracy there! The Climate Prediction Center is forecasting El Nino conditions to continue. See maps showing warmth in Northern Plains and cool weather in the South: http://www.cpc.ncep.noaa.gov/products/predictions/30day/

    However Buff, what is most likely balancing out El Nino’s effects are those of the NAO (or North Atlantic Oscillation). See blog post here: http://addins.wrex.com/blogs/weather/?p=5560

    The NAO remains negative and is forecast to decrease significantly! This would mean that El Nino effects won’t be seen here anytime soon. http://www.cpc.noaa.gov/products/precip/CWlink/pna/nao.sprd2.gif

    Great question! -ES

  4. tony December 28, 2009 6:56 PM

    Eric, when you say the NAO is negative and is forecast to decrease significantly, that would mean that temps will stay below average. Is that correct?

  5. Renee December 28, 2009 7:00 PM

    Well, that’s not so nice 🙁 I was really looking forward to a warmer than normal winter!

  6. WI Weather Buff December 28, 2009 9:07 PM

    Me too, Renee.

    Thx Eric!

  7. Eric Sorensen December 28, 2009 10:51 PM

    Tony, yes.

  8. tony December 28, 2009 11:08 PM

    Ok thank you eric.

  9. Shirley December 29, 2009 8:02 AM

    This is cool.I thought it was cool that you let us all know you are 35 yrs. old,too..LOL

  10. Eric Sorensen December 29, 2009 11:08 AM

    Hey Shirley, no one’s supposed to be counting! 😛

  11. Shirley December 29, 2009 11:32 AM

    Sorry, I thought it was so funny. LOL
    I’m happy, I CAN count.

  12. tony December 29, 2009 1:55 PM

    Hehe, actually eric is 33 hehehe. Which is a year younger than me.

  13. tony December 29, 2009 2:14 PM

    Actually eric, will the skies be clear on new years eve night so we can see this once in a rare blue moon occurence new years eve?

  14. Ron December 29, 2009 10:59 PM

    My oldest Son(Brandon) was born under that blue moon eleven minutes after midnight 1-1-91. =)

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