Avalanche Bulletin
更新日時: 2022/01/08 05:30
Hakuba
Alpine Fair
Treeline Fair
Below Treeline Fair
信頼度：○ good □ Fair △ Low
Travel and Terrain Advice
Be aware of the unstable snow that remains on certain terrain. At high elevations, it is necessary to act on the assuming that the instability that showed an active response in the below treeline yesterday is also a low temperature, and it is still present in various places. It is also a three-day holiday, and the mountains are expected to be crowded. Please act while paying attention to group management using terrain and relationships with other parties above and below you. The snow is dry and cold. Have a nice day
Avalanche Problem
ウインドスラブ Wind slab
概要
Avalanche
Yesterday (7th), multiple surface avalanches of size 1 have been observed in the below treeline. Both are due to slabs formed locally on the terrain, and due to snowfall that occurred until the morning of the day.
Snowpack
The snowfall (15-20 cm in the upper part of the below treeline) that occurred until yesterday (7th) morning is responding to human stimuli as of yesterday. Above the forest limit, there is a lack of information on this condition, and uncertainty remains high. In the field, find out how much of this instability still remains. However, this instability is dispersed in various parts of the terrain due to the wind, and if you are inexperienced, please deal with safety measures using the terrain such as reducing the slope. It is also necessary to keep in mind that at high elevations, yesterday, the south wind during the day, and the north wind from night to this morning.
Weather
The Japan Meteorological Agency forecasts southern wind, daytime, northern wind, sunny weather, and a maximum temperature of 2℃ (elevation 418m) for the northern part of Nagano prefecture. At the foot of Mt. Hakuba (elevation 703m), the temperature is -14.3℃ (as of 5:00). No new snowfall since yesterday has been observed at the foot of the mountain.
