Some clouds curl like a row of breaking waves

A neat row of white clouds curling like breaking ocean waves in a blue sky

Some clouds curl like a row of breaking waves

Kelvin-Helmholtz clouds form when two layers of air move at different speeds. The faster upper layer can scoop the top of a cloud into a repeating line of smooth, rolling crests.

For a few minutes, the sky borrows the sea's favorite shape.

Source · Met Office ↗

Some clouds curl like a row of breaking waves — ChillScroll

Some clouds curl like a row of breaking waves