Avalanche Bulletin
更新日時: 2022/01/28 05:30
Hakuba
Alpine Fair
Treeline Fair
Below Treeline Fair
信頼度：○ good □ Fair △ Low
Travel and Terrain Advice
It is a day when avalanche conditions are high in a specific terrain or location. At elevations higher than the upper part of the below treeline, it is necessary to consider that the apparent instability from yesterday continues. Please act while observing the terrain well while considering the place where the snow moved by the northwest to the west winds accumulates. Be vigilant where there is a large outbreak at the top of yourself, and you need conservative route settings. The snow conditions are good, so you can enjoy it even if you drop the slope. Don't forget to check if there is a “terrain trap” at the end of the slope you want to slide on. If you choose the terrain wisely, it will be a fun day. Have a safe day
Avalanche Problem
ストームスラブ Storm slab
ウインドスラブ Wind slab
概要
Avalanche
Yesterday (27th), several avalanches of storm slabs of size 1-1.5 have been observed below the forest limit. They responded sensitively to spontaneous or human stimuli. In addition, point avalanches of size 1 have been reported on steep slopes that are not affected by wind.
Snowpack
The snow with weak binding force that fell in the early hours of the 26th is buried near the surface layer of the snow cover, and the slab placed on it responds sensitively to human stimuli as of yesterday. From yesterday to this morning, there is almost no new snowfall, but since the northwest at night and a moderate (10 m/s) wind in the west from the morning is blowing near the main Alpine ridge, the thickness of the slab due to the moved snow Where it has increased, it is necessary to consider it a dangerous state today as well.
Weather
The Japan Meteorological Agency predicts northern Nagano prefecture's northern wind, cloudy, occasional, sunny, mid-day, temporary, snow, and a maximum temperature of 2℃ (elevation 418m). At the foot of Mt. Hakuba (elevation 703m), the temperature is -8℃ (as of 5:00), and there is no new snowfall at the foot of the mountain.
