Yesterday, a stormy ocean suddenly engulfs the sky over the Indre department in France. October 4th, apocalyptic undulatus asperatus flooded the sky over Rio de Janeiro, Brazil.
Look at these impressive sinuous waves, they are out of this world!
Like an agitated sea, the sinuous asperatus undulatus suddenly flooded the sky over Indre during the afternoon of October 5, 2017.
The unique formation, known as Undulatus asperatus, develops when undulation in the atmosphere causes air to move.
The striking wavy motion then appears across the sky, when wind makes contact with the base of low-lying clouds.
The Cloud Appreciation Society has classified these wavy clouds as a unique cloud formation in 2009. They were photographed for the first time in the 70s in Iowa (USA). This classification is still controversial as this cloud is considered a mere “altocumulus” by other organisations.
These clouds often form at the front of a storm, in a very unstable atmosphere composed of two different currents, which gives its typical undulation. However, it is not necessarily synonymous with big damage: good rain, a few drops, or … nothing at all.
Here another series of crazy undulatus over Rio de Janeiro, Brazil on October 4, 2017:
Most asperatus are not particularly striking, but some of them have a very impressive apocalyptic shape when formed in a stormy environment.