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ニセコなだれ情報 第71号 Niseko Avalanche Info No.71

 

山麓6時-10度降雪24時間15cm、モイワ800m-12.9度西7.3m/s雪庇ふきだまり発達、見返り分岐-12度ふきだまり発達、アンヌプリ1120m積雪深250cm、水野の沢12時間降雪12cm北北西9-13.5m/s積雪深185cm、ヒラフ山頂-17度風つよくふきだまり発達12時間降雪25cm、アメダス寿都-5.0度積雪深61cm、倶知安-16.9度積雪深198cm、弁慶岬北9m/s、神威岬北北東3m/s気圧1023hPa波高2.0m、

 

標高800m以上北寄り10-15m/sの風雪が断続し雪庇ふきだまりがゆっくりと発達、海水温が高いため雪雲ができやすく降雪量がやや多い。降雪推移、観察から標高800m/s以上風下側の雪崩リスクはやや高い。各ゲートは開けられる。ノールや雪庇を刺激せず1人ずつ滑ること。斜面途中や谷筋にとどまってはならない。雪庇斜面をトラバースしてはならない。天気が変わりやすい。ホワイトアウトに注意。厳冬の山に安全はない。雪は今日も良い。

 

Mountain base 6am: -10℃, 15cm snowfall in 24h. Moiwa800m: -12.9℃, W7.3m/s, cornice and snowdrifts developments. Mikaeri junction: -12℃, snowdrifts developments. Annupuri1120m snow depth 250cm. Mizuno no sawa 12cm snowfall in 12h, NNW9-13.5m/s, 185cm snow depth. Hirafu peak: -17℃, strong winds developing snowdrifts, 25cm snowfall in 12h. Suttsu weather station: -5.0℃, 61cm snow depth. Kutchan: -16.9℃, 198cm snow depth. Benkei cape: N9m/s, Kamui cape: NNE3m/s, 1023hPa, 2.0m waves.

 

Intermittent 10-15m/s northerly storm has persisted above 800m elevation, making cornices and snowdrifts develop slowly. The sea surface temperature is relatively high, making snow clouds form more abundantly and resulting in higher snow precipitation than average. The avalanche hazard level in leeward slopes above 800m elevation is moderately high. All gates are scheduled to open. Do not stimulate cornices and knolls and ride one by one. Avoid valley bottoms and better not stop halfway down a slope. Do not traverse across slopes under cornices. The weather is changing quickly, beware of whiteouts. Safety is never guaranteed in Winter Mountains.

The snow condition is awesome again today.

| - | 07:15 | - | - | pookmark |