Science / Weather / Snow: Frozen precipitation in the form of white or translucent ice crystals in complex branched hexagonal form. It most often falls from stratiform clouds, but can fall as snow showers from cumuliform ones. It usually appears clustered into snowflakes. It is reported as 'SN' in an observation and on the METAR.
Science / Weather / Snow Flurry: Light showers of snow, generally very brief without any measurable accumulation. May be reported as 'SHSN--' in an observation and on the METAR. MORE
Science / Weather / Snow Roller: The product of moist, cohesive snow that when initiated by wind rolls across the landscape, gathering snow until it can no longer move. It is shaped like a rolled sleeping bag, some reaching four feet MORE