Warm. Rain. Shinny Roads.
Warm. Graupel. Stars in Daylight.
Cool. Flakes. Thin Blanket.
Cold. Stick Together. Big Flakes. Whiteout.
Snow Squall is a phenomena which involve a brief, but heavy, fall; and snow showers, which feature a short-lived, moderate fall, with some accumulation on the ground. Appearing out of nowhere.