A meteorological phenomenon where wind rolls snow into cylindrical shapes resembling straw bales (俵). Also known as 雪まくり.
See also: 雪まくり
俵雪は、強風と適度な湿り気のある雪の条件で発生する。
Snow rollers form under conditions of strong wind and moderately moist snow.
Compound of 俵 (たわら, 'straw bale') and 雪 (ゆき, 'snow'), from the bale-like shape of the snow rolls.