Sunday, 20 May 2012

A circumhorizontal arc is an optical phenomenon - an ice-halo formed by plate-shaped ice crystals in high level cirrus clouds. 







8 comments:

  1. During the Winter, we'll have the conditions where you can see a full circle. It's awesome.

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    1. Jess, I would love to see that...if you get the chance take a photo for me.

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  2. Called "sundogs". I think.
    I've actually seen "moondogs".

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    1. Is that the same as a "moonbow"? http://www.nightskyhunter.com/Moonbow%20Madness,%20Maghera%20-%20Sept%2013th%202011.html

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  3. I have totally seen one of them when I was in Argentina. I even have photos.

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