- A rare Kelvin-Helmholz wave with breaking, cusped crests
- W005971Z
- A rare Kelvin-Helmholz wave with breaking, cusped crests at the top of a strip of Altocumulus cloud. The waves have amplified to the point where each crest begins to pinch cloud fragments off at the top. Each crest looks like a tiny standing wave with stacked, thin cloud wafers at the highest point of lift.
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