Iridescent Clouds

Today while at the beach with Kirsten I looked up and saw the most amazing meteorological phenomenon: iridescent clouds. I had never seen them before. It looked like a rainbow, but without rain and no bow.

Cloud iridescence is an unusual diffraction phenomenon.

Iridescent cloud
Iridescent cloud

This photo was taken with my iPhone 3GS through polarized sunglasses. The foreground was lightened in post.

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