Snow grains

Snow grains are a form of precipitation.

Snow grains are characterized as very small (<1 mm), white, opaque grains of ice that are fairly flat or elongated.

Unlike snow pellets, snow grains do not bounce or break up on impact.

[1] Usually, very small amounts fall, mostly from stratus clouds or fog, and never fall in the form of a shower.

The METAR code for snow grains is SG.