Asperatus — the worst clouds
The power of nature is boundless, and she always shows her carrying destruction and loss of life, sometimes it is enough just to raise his head. Undulatus asperatus, also known as asperatus is a rare cloud type frightening appearance, proposed as a separate species in the classification of clouds in 2009.
Scientists noticed that the clouds asperatus began to appear frequently in the early 21st century. Despite its fearsome appearance, the appearance of these clouds is not accompanied by a thunderstorm and hurricane, unlike their closest relatives undulatus clouds.
Literally Undulatus asperatus translates as rough or undulating waves.
Ominous clouds are particularly common in the United States, most often they can be found in the morning and midday.
Since 2009, the British Royal meteorological society studies of clouds asperatus to find out how they are formed and what exactly do they differ from undulatus clouds.