Video: Have you ever seen a 'tsunami' in the sky?

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Video: Have you ever seen a 'tsunami' in the sky?
Video: Have you ever seen a 'tsunami' in the sky?

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We've heard of a tsunami - but never one in the sky.

That's what people in Birmingham, Alabama, saw last Friday afternoon when a strange cloud formation called the Kelvin-Helmholtz rolled through town.

According to the Daily Mail, the Cloud Appreciation Society explains the phenomenon as a 'result of turbulence in a layer of Cirrus cloud where air currents exist of differing speeds or directions'.

It is reportedly more likely to occur in an area of vast plains, and is called the Kelvin-Helmholtz because Scottish baron Lord Kelvin and German physicist Hermann Helmholtz offered the first explanation for the phenomenon.



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