Avalanche Bulletin
更新日時: 2025/01/08 05:30
Hakuba
Alpine Fair
Treeline Fair
Below Treeline Good
信頼度：○ good □ Fair △ Low
Travel and Terrain Advice
Very dangerous avalanche conditions. Terrain selection with a large safety margin and careful route planning are required. Even if you are in the forest, pay attention to a start zone above you. Check for "terrain traps" below you, where even a small avalanche can have deadly consequences. At lower elevations, glide cracks may be hidden by fresh snow. Be alert for sudden changes in slope. Terrain awareness is very important. For inexperienced groups, skiing within the ski area is recommended. In this case, please make sure to check the ski area boundary. Outside the ski area boundary line is "unmanaged mountain. It is important to understand that even if you are one meter beyond the boundary rope, there are completely different dangers than within the ski area.
Avalanche Problem
ストームスラブ Storm slab
The hazard level increases where the surface layer of snowfall has more slab characteristics due to wind. Even if the snowfall temporarily weakens during the day, the hazard level does not decrease.
概要
Avalanche
No new avalanches were reported yesterday (7th).
Snowpack
Around the upper part of the below treeline, there is about 30 cm of snowfall due to the winter pressure pattern that began in the afternoon of the 7th. This lower layer is buried by low-density snow from the 6th to the morning of the 7th. As a result, the snow cover structure is generally unstable. In addition, the effect of the rainfall on January 6 is generally around 1,200 - 1,400 m, but is not very clear.
Weather
The Japan Meteorological Agency is forecasting southerly winds, cloudy skies, and occasional snow until late afternoon, with a daytime high of 3 °C (418 m elevation) for northern Nagano Prefecture. At Amedas Hakuba (elevation 703 m), the temperature is -3.1 °C (as of 5:00 pm), with 5 cm of snow having fallen in the past 12 hours. The Nagano District Meteorological Office is forecasting 40 cm of snowfall in the 24-hour period ending January 9 at 6:00 am.
