Avalanche Bulletin
更新日時: 2022/02/05 05:30
Hakuba
Alpine Fair
Treeline Fair 強い降雪が始まっています。
Below Treeline Fair 強い降雪が始まっています
信頼度：○ good □ Fair △ Low
Travel and Terrain Advice
It is a day when avalanche conditions rise during the day. While paying attention to the intensity of snowfall and wind, find out the instability it creates. When you have poor visibility, it is difficult to recognize the dangers above you. Check the route on the topographic map and ask for a stop or rest in a safe place. Choose a place where there is no “terrain trap” at the end of the slope to be glided on, and don't forget the group management to watch over the slippage of your friends in a safe place. The weather tends to deteriorate, so make an action plan that takes that into account.
Avalanche Problem
ストームスラブ Storm slab
概要
Avalanche
Fewer people entered the field yesterday (4th), and there are no reports of the new avalanche.
Snowpack
You need to be vigilant about the instability that new snowfall creates. At the moment, there is not a uniform amount of snowfall yet, but it is forecast that the winter type will strengthen and wind and snow will increase in the future. If the snow on the snow surface is blowing (wind speed about 10 m/s) while the depth of snowfall continues for 3 cm during the action, there is a danger of a new storm slab with a thickness of 30-50 cm on the leeward side after 3-4 hours. Think of it as occurring. It can be an avalanche of sufficient magnitude to bury people.
Weather
The Japan Meteorological Agency is forecasting northern Nagano prefecture's northern wind, snow, occasional, cloudy, and maximum temperature of 0℃ (elevation 418m). At the foot of Mt. Hakuba (elevation 703m), the temperature is -4.6℃ (as of 4:00), and there was snowfall of 3 cm in the past 12 hours. In addition, the Meteorological Agency has announced a heavy snow advisory (12 hours maximum snowfall 20 cm) for Hakuba Village and Otari Village for the period until the night of the 5th at 20:3 on the 4th.
