Science

Rare 'black hole' cloud spotted over London

Rare 'black hole' cloud spotted over London

Londoners were treated to an unusual sight as a rare cloud formation gathered over the capital.

Pictures taken in south London showed clouds likened by one social media user to a black hole.

sammie

Rare 'black hole' cloud spotted over London

Anyone else see this creepy cloud this morning? #blackhole #london

And a wave-like formation was captured by Twitter user Iain Mellis in the centre of the capital.

Iain

Rare 'black hole' cloud spotted over London

Morning @liamdutton saw this cloud formation over London this morning. Looked interesting - is it?

The clouds were identified by experts as Asperitas, a rare formation which was only recently given a name.

According to the Met Office: “Asperitas is a distinctive but relatively rare cloud formation that takes the appearance of rippling waves.

“These wave-like structures form on the underside of the cloud to make it look like a rough sea surface when viewed from below.”

Alexa Brown

Rare 'black hole' cloud spotted over London

Any cloud experts around? What the hell is this floating over south London?!

Exactly how the clouds are formed is not known, but they require unstable atmospheric conditions and are sometimes associated with the aftermath of thunderstorms.

Asperitas was officially recognised by the World Meteorological Organisation in 2015.