Barbes de chat
Observing clouds is understanding the wind. In France, long and wispy clouds are called cat whiskers. They usually tell that a warm front and upcoming rain are approaching over the next hours. They are classified as cirrus by the International Cloud Atlas and are the highest in the sky.
This belongs to a French project called De l'autre côté de la colline (on the other side of the hill), which is a place where you can follow your curiosity and learn about things in a ludic way.