Avalanche Bulletin
更新日時: 2022/12/26 06:00
Hakuba
Alpine Low
Treeline Low Watch out for wind slabs on the leeward side.
Below Treeline Fair The snowpack in below treelines is increasing steadily.
信頼度：○ good □ Fair △ Low
Travel and Terrain Advice
Dangerous avalanche conditions continue. The forested areas are still bushy and the avalanche terrain is difficult to see, but at higher elevations, the terrain is beginning to fill in with more snow. Don't be fooled by the atmosphere of the place you are in, but check the terrain map to see if there are any large start zones above you. Large avalanches can reach farther than you think. It is important to know if there is a large avalanche start zone above you. Avoid "terrain traps" that can lead to deep burial even in small avalanches.
Avalanche Problem
ウインドスラブ Wind slab
ストームスラブ Storm slab
概要
Avalanche
No new avalanches were observed yesterday (December 25) due to the low number of mountain users and poor visibility.
Snowpack
New snowfall due to a series of stormy weather that began with the passage of a low-pressure system on December 22 has reached 100 cm in the upper part of the below treeline. The snowfall stopped yesterday morning, and settling proceeded rapidly. In addition, the strong northwest winds redistributed the snow on the leeward side, forming wind slabs on the leeward slope. On top of the windslab, 10-30 cm of new snowfall from last evening was added. In the upper part of the below treeline, the avalanche terrain has begun to fill in, but there are still holes in the gully.
Weather
The Japan Meteorological Agency is forecasting that a winter pressure pattern will continue over northern Nagano Prefecture, with snow in the northern part of the prefecture, but it will become cloudy from midday onward. Snow is expected to continue along the northern mountains and in the Nakano Iiyama area. In the northern areas, thunderstorms are possible until late afternoon, and a maximum temperature of 2°C (418 m elevation) is forecast. The temperature at Amedas Hakuba (elevation 703m) is -2.7℃ (as of 5:00).
