Avalanche Bulletin
更新日時: 2022/01/25 05:30
Hakuba
Alpine Fair 地形局所に形成したウインドスラブに注意
Treeline Fair
Below Treeline Fair
信頼度：○ good □ Fair △ Low
Travel and Terrain Advice
The wind has also subsided, and a calm day is forecast. If you are going to raise the elevation, pay attention to the locally formed windslab. The place where the snow surface is hit by the wind, and there is a possibility of a wind-slab where the clean surface exists between the rugged slopes. The most effective means to combat avalanches is to “reduce the slope”. There are also many free smartphone apps, so let's actually measure the inclination while acting and acquire that feeling. Have a nice day
Avalanche Problem
ウインドスラブ Wind slab
概要
Avalanche
Yesterday (24th), an avalanche that seems to be caused by snow canal collapse has been observed on the main ridge line of Alpine. Winds exceeding 10 m/s were blowing from beginning to end near the main ridge.
Snowpack
Snow in stormy weather is in the direction of stabilization in the below treeline, no pronounced vulnerability is observed. From the forest limits to the Alpine, it has been observed that there are places where surface frosts are hidden under the windslabs. Be wary of the combination of shaded slopes on the north side, where radiation is outstanding even in favorable weather, and places where wind slabs are formed by westerly winds.
Weather
The Japan Meteorological Agency predicts northern Nagano prefecture's northern wind, cloudy weather, sunny morning to early morning, and a maximum temperature of 3℃ (elevation 418m). At the foot of Mt. Hakuba (elevation 703m), the temperature is -9.1℃ (as of 5:00), and there is no new snowfall in the past 3 days.
