Avalanche Bulletin
更新日時: 2023/01/25 05:30
Hakuba
Alpine Good
Treeline Good
Below Treeline Good Even if the snowfall weakens, if the wind remains, the danger level remains the same. There is a greater load on the downwind side.
信頼度：○ good □ Fair △ Low
Travel and Terrain Advice
Very dangerous avalanche conditions. Activities in mountain areas are not recommended. Even if the snowfall weakens, the danger level will not change much, because the interface between new and old snow needs some time to gain strength. Also, if strong winds are still present, the downwind side will be more dangerous. Even if you are inside the ski area, it is extremely important to comply with the areas that can be skied. When skiing in the fresh snow areas of the resort, make sure to ski with a companion.
Avalanche Problem
ストームスラブ Storm slab
Snowpack is strongly influenced by north-to-northwest winds.
持続型スラブ Persistent slab
Heavy snowfall added significant load
概要
Avalanche
Yesterday (January 24), avalanches (size 1) and shooting cracks were reported on storm slabs formed by strong snowfall.
Snowpack
Heavy snowfall began around 10:30 AM on January 24 and produced numerous shooting cracks and size 1 slab avalanches in the afternoon Below Treeline. These instabilities are reported to be at the interface with the old snow. As of this morning, snow depths of 70 cm on the north side of the Hakuba Valley bottom and 30 cm on the south side have been recorded.
Weather
The Japan Meteorological Agency is forecasting northerly winds, snow, cloudy after noon, then sunny, with a high of -3°C (418 m elevation) for northern Nagano Prefecture. At the foot of Mt. Hakuba (elevation 703m), the temperature is -11.4°C (as of 5:00).
