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ニセコなだれ情報 第52号 Niseko Avalanche Info No.52

山麓5時-10度降雪30cm、モイワ800m-10.5度北西11.6m/s降雪40cm雪庇ふきだまり発達視界不良、アンヌプリ1150m-11度北寄り10m/s時折突風ふきだまり発達降雪50cm、ヒラフ山頂-14度風弱く降雪40cm、弁慶岬北北西12m/s、神威岬北13m/s気圧998hPa波高3.5m、

 

冬型の気圧配置の中で風雪が続き標高800m以上に雪庇、ふきだまりが急激に大きく発達、雪の量は非常に多い。雪庇は崩壊しやすく不安定。風が弱まり積雪は安定し始めているが標高800m以上の雪庇斜面、ふきだまり斜面の雪崩リスクは高い。昼にかけて風雪が強まり、ふきだまりは更に発達する見込み。

 

各ゲートは開ける予定で準備を進めているが時間限定となる。パトロールの指示に従うこと。今日は雪庇斜面や開けた急斜面に入ってはならない。また谷底にとどまってはならない。多くの雪崩事故は吹雪などの悪天候下で起こっている。雪崩は自然現象でありそこに人がいなければ事故にならない。知識技術を過信せず雪に合わせた行動を。森の中の雪は深いが素晴らしく良い。

 

ルールを無視して立ち入り禁止区域春の滝に入る人が出始めている。身勝手な理由で決まりを守らないこれらの人に対して地域は容赦しない。良い一日を。

 

Niseko base 5am: -10, 30cm snowfall, Moiwa800m: -10.5, NW11.6m/s, 40cm, cornices and wind-drifts developing, bad visibility. Annupuri1150m: -11, Northerly 10m/s with gusts, 50cm with large wind loads. Hirafu peak: -14, light breeze, 40cm snowfall. Benkei cape: NNW12m/s, Kamui cape: N13m/s, 998hPa, 3.5m waves.

 

Stormy condition continues under a typical winter pressure distribution, generating huge snowfall with drastic and large cornices & snowdrifts developments above 800m elevation. Cornices are very unstable and collapses easily. The snowpack is starting to stabilize as the wind is calming down, however avalanche risk in slopes under cornices and with heavy snow-load is very high. The storm is forecasted to pick up during the day and snowdrifts will continue developing.

 

All gates are being prepared to open, however will be time dependent. Please follow the patrol’s instructions. Do not enter cornices/snowdrifts slopes, and do not stay put at the bottom of the valleys. Most avalanche accidents happen during bad weather. Avalanches occur naturally, but would not be an issue if nobody is caught in one. Adjust your plans according to the weather condition and never over-estimate your knowledge and skills. The snow in the trees is deep and in excellent conditions.

 

We start seeing people ignoring the Rules and going into strictly off-limits areas. The community will not tolerate people that disregard the Rules with their own selfish excuses. Have a nice pow day.

| - | 07:42 | - | - | pookmark |