Snow

Snow is a form of  precipitation  in the form of crystalline water ice, consisting of snowflakes that fall from . Since clouds is composed of small ice particles, it is a granular material. It has an open and therefore soft structure, unless subjected to externalpressure. Snowflakes come in a variety of sizes and shapes. Types which fall in the form of a ball due to melting and refreezing, rather than a flake, are known as hail, ice pellets or snow grains. Snowfall amount and its related liquid equivalent precipitation amount are determined using a variety of different rain gauges.