Avalanche Bulletin
更新日時: 2022/01/21 05:30
Hakuba
Alpine Fair
Treeline Fair
Below Treeline Fair
信頼度：○ good □ Fair △ Low
Travel and Terrain Advice
This is a very dangerous avalanche condition. A large open slope facing east to southeast to south is a state where very large avalanches can occur. Even if you are in the forest zone, please be sufficiently vigilant of the occurrence areas and runways within it. The snow is very deep and soft, so there is a risk of burial if a combination of traps (hollows and depressed swamps) of the terrain is merely a small avalanche or a slight collapse of snow. For those who are inexperienced, the slopes are fun conditions. When skating in the fresh snow area set up at the ski resort, please pair up with your friends while being aware of each other.
Avalanche Problem
ストームスラブ Storm slab
概要
Avalanche
Yesterday (20th), a large number of point avalanches (size 1-1.5) in the morning and a large number of very soft storm slabs (size 1-1.5) in the afternoon were reported in the forest belt.
Snowpack
The snowfall that began yesterday (20th) around 7:30 has low cohesiveness, and point avalanches began to occur shortly after deposition began. In the afternoon, due to the influence of wind, etc., the surface avalanches of very soft slabs responded sensitively to human stimuli. The strong snowfall generally subsided last night, but northwestern winds are blowing at high elevations, and the reverse structure is extremely unstable in places where snow moved by the wind accumulates.
Weather
The Japan Meteorological Agency is forecasting northern Nagano prefecture's northern wind, cloudy weather, and occasional snow until afternoon, and a maximum temperature of -1℃ (elevation 418m). At the foot of Mt. Hakuba (elevation 703m), the temperature was -5.9℃ (as of 5:00), and there was snowfall of about 20 cm in the past 24 hours. There has been snowfall of about 50 cm in the past 24 hours at an altitude of 1,000 m.
