Avalanche Bulletin
更新日時: 2021/12/25 06:30
Hakuba
Alpine Fair
Treeline Fair
Below Treeline Fair
信頼度：○ good □ Fair △ Low
Travel and Terrain Advice
As the weather alert has been reported, it will be heavy wind and snow after this. If something goes wrong in the mountains, it is necessary to take action with a large margin of safety, considering that there is a high possibility that rescue teams will not be able to dispatch for the next few days. The current avalanche risk is low, but it is rapidly deteriorating. Also, do not forget that below the forest limit, even on slopes that, at first glance, seem slippery, the bush has not yet fallen, so there is a risk that the skis will get under the branches and fall into the holes, and so on. At the beginning of the season, it is also a good option to use the lifts on the slopes to regain the feeling of gliding.
Avalanche Problem
ストームスラブ Storm slab
今後の降雪強度と風の状態に留意
概要
Avalanche
No the new avalanche were observed yesterday (12/24).
Snowpack
The snow of the storm, which has passed for several days since December 17, has settling and is in a stable state. After that, Alpine was exposed to strong winds, and there were places where hard snow surfaces were exposed. Snowfall due to the south coast low has started in the early dawn, mixed with sleet at the foot and snowfall in the mountains. Pay attention to the intensity of the upcoming snowfall and the formation of slabs due to changes in wind strength and wind direction. It should be noted that the amount of snow accumulation in the forest zone due to the forest limit is not yet sufficient, and the terrain has not been filled. There is a dangerous hole in the swamp.
Weather
The Meteorological Agency forecasts northern Nagano prefecture with northern winds, cloudy occasional snow, and a maximum temperature of 4°C (elevation 418m). At AMeDAS Hakuba (elevation 703m), the temperature is 0.3℃ (as of 5:00). The Japan Meteorological Agency announced the “Kanto-Koshin District Weather Information on Heavy Snow” at 5:41 on December 25, and forecasts heavy snow along the mountains in Nagano prefecture and the northern Kanto region. It is 50 cm in 24 hours from 6:00 on the 25th, 50-70 cm in 24 hours from 6:00 on the 26th, and 50-70 cm in 24 hours from 6:00 on the 27th.
