spray of snow; snow smoke
Fine snow blown up by wind or skis, resembling smoke. Often used in skiing and mountaineering contexts.
スキーヤーが急斜面を滑り降りると、雪煙が舞い上がった。
As the skier descended the steep slope, a spray of snow billowed up.
Compound of 雪 (yuki, 'snow') and 煙 (kemuri, 'smoke'), describing snow that looks like smoke when blown up.