ニセコなだれ情報第64号 Niseko Avalanche Info No.64

山麓6-7度降雪なし、モイワ800m-6度降雪ふきだまり発達なし、見返り740m-5.2度北0.1m/s、アンヌプリ1150m-13度西5m/s降雪なし、ヒラフ山頂稜線-8度降雪なしおだやか、日本海弁慶岬南4m/s神威岬南14m/s気圧1028hpa波高1.0m
高圧帯の中で降雪なくおだやか、昼前に南風が強まり気温が上昇する。観察から雪は安定し全体の雪崩リスクは低い。各山頂ゲートは朝から開けられる。準備してコース外へ出ること。ビーコン携行は義務ではないが持つことを勧める。もしもの時にあなたが救助される可能性が高まるとともに、仲間の命も救えるかもしれない。
山には多数のトラックが残っている。地形に明るい経験者が雪庇斜面のトラバースを繰り返し、大勢がそれを真似ればやがて事故が起こる。経験者には初心者を喜ばせるだけではなく、その安全に大きな責任がある。延々と続く雪庇下のラインは非常識であり、無知をさらけだしているように見える。トラバースラインはせっかくの新雪斜面をだいなしする。滑走はフォールラインを。もしそれができないのならそこに行くべきではない。転倒立木衝突、雪庇崩壊亀裂転落に注意。良い一日を。


Niseko base 6.00am: -7°C, no new snowfall. Moiwa 800m: -6°C no new snowfall, no snowdrift development. Mikaeri 740m: -5.2°C, N0.1m/s. Annupuri 1150m: -13°C, W5m/s, no new snow. Hirafu Peak Ridgeline: -8°C, calm, no new snow. Coastal data: Benkei Cape:S4m/s. Kamui Cape S14m/s, 1028hPa, wave 1.0m.
Currently we are in high pressure zone, there is no new snow and weather is calm. Before midday a southerly wind is expected to pick up and temperatures increase. From observation the snow has stabilized and general avalanche risk is low. All peak gates are expected to be open. Be prepared before venturing out of bounds. Carrying a beacon is recommended but not compulsory. If you are buried it will increase your chances of a safe rescue and also help you rescue your partners if they are buried.
Yesterdays tracks are still there. Conditions on the mountain change everyday, just because you saw tracks across a cornice slope yesterday doesn't mean it will be safe today. With the large numbers of inexperienced riders going out of bounds, more experienced people should acknowledge their responsibility not to put traverses in dangerous places. People will not only follow these tracks today, but also go back tomorrow, when conditions might not be so stable. Long traverse lines under cornices shows lack of any common sense. They also ruin the precious fresh slope we all are searching for. Ride the fall line. If you cant, you should not be there. Take care of hitting trees, breaking cornices, falling into cracks. Have a good day.


 

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