Considered unlucky to mention before it falls, these small white crystals of water vapor float down from the sky as the temperature drops.
My ASL Dictionary’s updated cartoon of an Arctic Empress with a Crown of Ice Crystals illustrates the ASL hand sign for SNOW.
The Raised Hands slowly lower down as the fingertips flutter like beautiful snowflakes of falling Snow. Similar to RAIN hand sign, the hand movement can change to mimic the precipitation, from a slow and gentle fall to a sideways flurry or blizzard.