モイワ山麓6時 -6度風よわく降雪わずか　モイワ800m -8.7度北西2.7m雪庇発達 夜半10m/s降雪わずか　見返り800m-9度西南西1.3m降雪わずか　ヒラフ花園-10.1度北1.5m薄曇り視界良降雪わずか　花園800m-8.6度風向不明2.9m　日本海弁慶岬北西11m　神威岬北北東9m気圧1022hPa波高1.4m。
プラス5度の気温が二日つづき21日午後から寒気流入、標高700m以上はマイナス10度前後、暖気後の強い寒さのためゲレンデ状況は悪い。また極端な温度差が索道や機械のトラブルを起こしている。観測とデータから雪崩リスクは低いが、バックボウル側壁なと標高差の大きな急斜面では硬く雪板化した薄い層が広い範囲で割れ、魔法の絨毯と呼ばれる高速の表層雪崩が起こりやすくなっている。近寄らないほうが良い。ゲレンデは混雑している。特に下部はビギナーが多い。暴走衝突に注意。スクールやグループはコースの中に停まって他の滑走を妨げてはならない。良い一日を。
Moiwa base 6am: -6℃, light wind and slight snowfall. Moiwa 800m: -8.7℃, NW2.7m/s, cornice development, 10m/s wind during the nigh, light snowfall. Mikaeri 800m: -9℃, WSW1.3m/s, light snowfall. Hirafu Hanazono: -10.1℃, N5.1m/s, lightly clouded, good visibility, light snowfall. Hanazono 800m: -8.6℃, wind n/a 2.9m/s. Sea of Japan Benkei cape NW11m/s, Kamui cape NNE9m/s, 1022hPa, 1.4m/s.
After 2 days of +5℃, cold air will finally start to flow in from this afternoon. The temperature dropped to -10℃ at 700m elevation. The slope condition is pretty bad and some trouble is seen in the chairlifts/gondola mechanism due to drastic temperature changes. The general avalanche risk is low, however in steep slopes with significant elevation changes, such as the sidewalls of the Backbowl, thin but hard “wind slabs” are prone to fracturing over wide areas. This increases the risk of high-speed surface avalanches, often referred to as “magic carpets.” Do not approach these areas. The courses are crowded and many beginners are present in the lower areas. Beware of high-speed collisions. Ski schools and groups must not stop in the middle of the trail or obstruct the flow of other skiers and riders. Have a nice day.

出典 Source：気象庁 JMA website (www.jma.go.jp/bosai/weather_map/)