Wiggle cloud

Day 257
Driving around today and I saw this cloud formation. Not sure what it's called or even how it was formed... thought it was cool though.

[Erin]

Great capture and interesting looking clouds

[carol white]

Well spotted, very unusual cloud formation

[Drew p Davies]

I've been told that it is a very rare formation called Kevin-helmholtz. After a pair of meteorologists that studded air flow and disturbance.