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ニセコなだれ情報 第110号 Niseko Avalanche Info No.110

山麓-2度降雪なし、モイワ800m-3.8度南西0.4m/s、アンヌプリ1000m積雪230cm、ヒラフ1250m-7度南西微風、日本海神威岬南南西8m/s気圧1020hPa波高0.8m、弁慶岬南南東2m/s

高圧帯の中で晴れておだやか。日中は気温があがり800m以下の融雪が進み沢は増水する。観察からふきだまりは安定し表層雪崩リスクは低いが急斜面のクラスト破壊による雪崩に注意。各山頂ゲートは朝から開けられる。朝のうち山は硬く凍っているが気温が上がれば融けて滑りやすくなる。

各所に亀裂が生じている。亀裂は上から見えず転落すると致命的事態を招く。確実な滑走を。日射の影響を強く受ける南斜面や春の滝などの崖斜面では全層雪崩のリスクが高まる。雪崩走路となる谷底の滑走を避けること。急な側壁の下にとどまらないこと。良い春の一日を。

 

Mountain base : -2°, no new snow. Moiwa 800m: -3.8°, SW0.4m/s. Annupuri 1000m: snowpack 230cm. Hirafu 1250m, -7°, light SW winds. Coastal data: Kamui Cape: SSW8m/s, 1020hPa, wave 0.8m, Benkei Cape SSE2m/s.

We are currently under the influence of a high pressure system, the weather is calm and sunny. With increasing temperatures during the day, snow melt below 800m will continue and creek water levels will rise throughout the day. From observation, snowdrifts are stable and risk of surface slab avalanche is low, however beware on steep slopes that the surface crust may collapse. All peak gates are expected to be open. The snow conditions will be hard and frozen first thing and soften up for easier riding later on in the morning.

Cracks are forming in many areas now. Often they cannot be seen from above and can be the cause of a fatal accident if you crash into one. Ride with care. On steep south facing slopes and cliffs areas, like Haru no Taki, which are strongly effected by the sun, the risk of full depth avalanches continues to increase. Avoid riding in the valley bottoms, this is the avalanche path. Do stop and wait at the bottom of steep valley sidewalls. Have a good day.

| - | 07:43 | - | - | pookmark |
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