These clouds look like breaking waves in the ocean

From NWS AWC

Kelvin–Helmholtz instabilities

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Looks more like an olde Japanese woodcut of waves on the ocean, actually… :slight_smile:

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Hokusai. 1760 to 1849.

That’s the one!

I’ve seen clouds like that once in my life. By the time I got my camera out they were gone.

Side note: All forty six of Hokusai’s Thirty Six Views of Mount Fuji including The Great Wave are available as large images made from modern facsimile prints at https://en.wikipedia.org/wiki/Thirty-six_Views_of_Mount_Fuji.

They look spectacular printed on matte photo paper.