Copyright 1991 by Bruce McMillan
Altocumulus clouds consist of a thin sheet of white or gray clouds that are broken into bands, blobs, rolls or waves. Altocumulus are middle atmosphere clouds which means that they are not the highest or lowest clouds in the sky, they fit in the middle. These types of clouds form when there is moisture present in a wet air mass. Altocumulus clouds can sometimes mean that it will rain or snow. The name altocumulus means middle height and heap, therefore these clouds are puffy and found in the middle of the atmosphere.