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From: Jesse Ferrell (WeatherMatrix) - Offsite (ferrell{at}weathermatrix.net)
Date: Thu May 19 2005 - 13:46:21 EDT
We just saw a long and brilliant "rainbow" in the skies over State College,
PA. I believe it was a circumzenithal arc. This type of formation is
rarely seen, and this one was very bright and longer than the example photo
below. As I understand it, basically light enters ice crystals in a cirrus
cloud, through one side, and exits the other, creating a prism
effect. Unfortunately, I didn't have my camera with me and the good webcam
at home is down for maintenance.
Example Photo:
http://www.sundog.clara.co.uk/halo/cza.htm
Definition:
http://amsglossary.allenpress.com/glossary/search?id=circumzenithal-arc1
Last summer I saw what I believe to be a Circumhorizontal Arc in North
Carolina (see middle of http://www.weathermatrix.net/2004/alex/ ) Other
than these two occurrences, I don't remember seeing much besides "sun dogs"
(http://www.creations-photos.com/sundogs.html) in recent years.
--
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Jesse Ferrell - Meteorologist / Webmaster / Founder - WeatherMatrix
10,000 Weather Enthusiasts Can't Be Wrong! www.weathermatrix.net
[Non-text portions of this message have been removed]
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