Puffy. Scary. Calm. Unusual. All of these are terms used to describe clouds that you may see in your daily life, but they also have official names. Now, for the first time in 30 years, we have some new officially defined cloud types. Feel free to impress your friends with this new knowledge!

Who Gets To Classify Clouds:

Cloud types are officially recognized by the WMO, the World Meteorological Organization. This organization is part of the United Nations and exists to promote the exchange of meteorological information and standards between UN member nations. One of these standards is cloud classification, recorded in a publication called the International Cloud Atlas. The WMO calls it, “the global reference for observing and identifying clouds” and late last month they added some new members to this guide.

Homomutatus (or Man Changed/ Man Made) :


Contrails that persist over time and spread out into a thin sheet of cirrus clouds also now have a new name. These clouds are pictured below.

Volutus (or Rolled):

This cloud has been commonly called a “roll” cloud. It usually takes on a long and tubular shape.



This is the general classification to refer to clouds that were created by human activity. This can include contrails from aircraft, clouds from smoke stacks and cooling towers, or clouds from anything else that is human caused and creates a heat source strong enough to cause enough air to rise and form into clouds.


Former FBI Chief, Ted L. Gunderson

“The death dumps, otherwise known as chemical trails, are being dropped and sprayed throughout the United States and England, Scotland, Ireland, and Northern Europe. I have personally seen them not only in the United States, but in Mexico and in Canada. Birds are dying around the world. Fish are dying by the hundreds of thousands around the world. This is genocide. This is poison. This is murder by the United Nations.


Contrail Watching for Kids

Science Project:  contrail

condensation trail; cloud formed due to the exhaust of jet aircraft “>Contrail Watching for Kids

Cirrus clouds with contrails

Image courtesy Forrest meters [m]

A unit of length used for measuring distance or height. 1 m = 100 cm or a little more than a yard. The Metric System.”>M. Mims III

Web Id: P3
Contrails are long clouds made by high-flying aircraft. Because kids are so good at watching clouds, they can be easily taught to identify contrails.
Age Range: 6 – 10
Time Required: Young children can observe and report on contrails in only a few minutes a day.
Background:Because kids are natural sky watchers, they are curious about both clouds and contrails. It is likely that when contrails are present that young children will notice and pay more attention to them than adults. Here are some basic facts that will interest them: