Breaking waves in the sky above Islay

Picture of cloud shaped like four breaking wavesAn interesting cloud formation I spotted from the track from Machir Bay to Kilchiaran. Reminds me of waves breaking in the sea, seen from the side.

Update: As per the comment below, I now believe this is an example of Kelvin–Helmholtz waves/instability, a relatively rare phenomenon.

 

2 thoughts on “Breaking waves in the sky above Islay

    • Oh, thanks Jo, had no idea what might have been behind it and that there is even a name for it. But the description sounds about right, they were only there for a short time.

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