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<< ニセコなだれ情報 第94号 Niseko Avalanche Info No.94 | main | ニセコなだれ情報 第96号 Niseko Avalanche Info No.96 >>
ニセコなだれ情報 第95号 Niseko Avalanche Info No.95

山麓6時-5度降雪2cm、モイワ800m-7.3度北西3.0m降雪5cmふきだまり不規則に発達、アンヌプリ1150m-8度北西5m/s降雪わずか、ヒラフ山頂-10度風弱く降雪3cm、日本海弁慶岬北北東6m/s、神威岬東南東2m/s気圧1021hPa波高1.9m、

 

強い暖気を持つ低気圧が北東に去りその後北西の風雪が断続。モイワ山頂の12時間の降雪推移では主に飛雪の雪庇とふきだまりが成長し朝までに収束。暖気流入とその後の強風で山ではふきだまりが不規則に発達している。観察から午前中は標高800m以上の風下斜面で3月9日低気圧降雪層から破断面40cmの浅い面発生表層雪崩が起こる可能性がある。雪庇斜面やノールでは注意。

 

各山頂ゲートは開けられる予定。パトロールの意見を聞き準備してコース外へ出ること。ふきだまりの質は悪くないが下には湿った層があり割れて刺さりやすい。雪を確かめながら用心深い滑走を。鉱山の沢標高1000m、アンヌプリ大沢標高1000m南東斜面で全層雪崩が起こる可能性が高まっている。発生すれば非常に危険なので雪崩通路となる谷底を滑ってはならない。経験者やガイドは同行者の安全に責任がある。安易に仲間やゲストを谷底や雪庇斜面に誘導してはならない。ゲレンデには場所によりジャガイモが多い。転倒注意。良い一日を。

 

Niseko base 6.00am: -5°, 2cm new snow. Moiwa 800m: -7.3°, NW3.0m/s, 5cm new snow, inconsistent snowdrift development. Annupuri 1150m: -8°, NW5m/s, trace new snow. Hirafu peak: -10°, light winds, 3cm new snow. Coastal data: Benkei Cape: NNE6m/s. Kamui Cape: SE2m/s, 1021hPa, wave 1.9m.

 

The warm low pressure system has moved of to the north east and a north west snow wind is now blowing. Snow drift and cornice development at Moiwa peak over the last 12 hours has mainly been from wind blown snow which has settled down now. The warm air and strong winds yesterday have caused irregular snow drift development. From this mornings observation, there is the possibility of surface avalanches on leeward slopes, fracturing on Mar 9th low pressure snowfall layer at about 40cm. Be careful on cornice slopes and around knolls.

 

Peak gates are expected to be open. Please listen to the patrols advice. Be prepared before going out of bounds. Snow drift conditions are not bad, however there is a wet layer below the surface which can easily catch you. Ride carefully and take constant note of snow conditions. There is high possibility of a full depth avalanche at Kozan no Sawa 1000m elev, Annupuri Osawa 1000m elev SE slope. If an avalanche occurs it will be extremely dangerous. Avoid riding in the valley bottom, this is where the avalanche will run. Guides and group leaders remember you are responsible for the safety of your group. Do not lead groups onto cornice slopes or into valley bottoms. Death cookies on the groomers  in places today, take care. Have a good day.

| - | 07:38 | - | - | pookmark |