Avalanche Bulletin
更新日時: 2025/01/08 06:30
Myoko
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 the start zones 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, etc. Terrain awareness is very important. For inexperienced groups, skiing within the ski area is recommended. When doing so, please make sure to check the skiable area carefully. 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
Several size 1-2 glide avalanches were observed yesterday (7th) below 1,000 m elevation. No avalanches were reported at higher elevations.
Snowpack
Around the upper part of the below treeline, there is about 20 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 snowpack structure is generally unstable. In addition, the effect of the rainfall on January 6 is more pronounced below 1,000 m elevation.
Weather
The Japan Meteorological Agency is forecasting winds out of the west, slightly strong, snow or rain, and a daytime high of 4 °C (13 m elevation) for the Joetsu region of Niigata Prefecture. At Sasagamine, Myoko (elevation 1,310 m), the temperature is -6 °C (as of 4:45 a.m.), and 12 cm of snow has fallen in the past 12 hours.
