Video: Undulatus Asperatus - Clouds of Armageddon?

The breathtaking undulatus asperatus clouds

The breathtaking undulatus asperatus clouds



The breathtaking undulatus asperatus cloud looks very like stormy ocean waves, and is rather disorientating to see as these waves are upside down in the sky!


The species of this cloud is "undulatus" which means "wave" In Latin. The variety of the cloud is "asperatus" which means "roughened" so the name literally descibes how this cloud looks, like rough waves!

This is a low cloud and is seen at about 2000 meters (6000 feet).

Despite their stormy end-of-the-world-is-nigh appearance, these clouds do not produce rain or a storm. They are most likely to be seen following convective thunderstorm activity.

Asperatus clouds are formed by warm and cold air meeting, this causes a turbulant effect. The British newspaper, The Telegraph uses the metaphor of vinegar and olive oil meeting in a great article about this cloud, which describes the transition very nicely! There is some disagreement about this though from scientists, it is also believed that Asperatus can form when dry air meets moist air.

Undulatus asperatus clouds

Undulatus asperatus clouds

Undulatus asperatus clouds by Patty

Undulatus asperatus clouds by Patty 

"They look menacing, but they blew over in about ten minutes."


17/05/2012 Instabilité de Moyenne Altitude by meteobell