Sunday, March 13, 2016

A late winter smile

On a lovely, perfectly warm Monday afternoon, as I was heading down my back deck stairs, I looked up to see a beautiful smile-shaped rainbow high in the sky, high above the sun. It was stunningly beautiful.

It is an atmospheric phenomena know as a Circumzinithal arc.

You can try sighting one - this was my first and I look-up frequently - when the sun is low in the sky.

A CZA is often accompanied by sun dogs, those small patches of rainbow on either side of the sun.

This CZA appeared alone without sun dogs.

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