precipitation consisting of white, opaque ice particles usually less than one millimeter in diameter.
Snow grains clump together, and they reflect less light than the many-faceted, smaller crystals.
Except for the idealized shapes of individual snow grains, the model is plane parallel.
Frozen precipitation was defined as pure snow or snow grains.
Snow was defined as pure snow or snow grains, while rain was comprised of pure rain or drizzle.
They can be distinguished from ice pellets, because ice pellets bounce and snow grains do not bounce at all.