The International Cloud Atlas is considering the inclusion of the first new cloud type since 1951, the undulatus asperatus….

The International Cloud Atlas is considering the inclusion of the first new cloud type since 1951, the undulatus asperatus. (Photo courtesy @z.zkt/Nik Gaffney/Flickr Creative Commons) @atlasobscura #clouds #undulatusasperatus #cloudappreciationsociety​ (via http://instagram.com/p/t-qUOahNwP/)