Avalanche Bulletin
更新日時: 2021/03/22 05:30
Hakuba
Alpine Low 降雪量が不確実
Treeline Low
Below Treeline Fair 昨日のまとまった降雨の影響に留意
信頼度：○ good □ Fair △ Low
Travel and Terrain Advice
It is a day when spring and winter live together. At low elevations, yesterday's cohesive rainfall is destabilizing glide cracked slopes. Always be careful if there is such a slope above you when you enter the valley. In Alpine, on the other hand, snowfall is accompanied by a very strong northwest wind. Be wary of storm slabs that have formed in this snowfall. As for the amount of snowfall, there is a high degree of uncertainty at the moment, so act while observing its volume and the effect of wind. Don't forget to manage groups using terrain.
Avalanche Problem
全層雪崩 Glide slab
既にグライドクラックの入った斜面及び落ち残りの雪ブロックに警戒
ストームスラブ Storm slab
昨晩からの降雪で形成したスラブ。
概要
Avalanche
Yesterday (March 21) due to rainfall, few people entered the mountainous area, so there is no information about the brand new avalanche. Glidecrack expansion has been observed at low elevations.
Snowpack
At the foot, it became a cohesive rainfall of 40 mm from the beginning of descending yesterday at 19:00. As a result, it is necessary to think that in places where glide cracks are open, rain flows from it, and the snow melting at the bottom of the snow cover proceeds and is destabilizing. The temperature has declined slightly, but the wet conditions on the snow bottom do not freeze immediately, so in places with low elevations, it is necessary to remain on the whole layer avalanche and be vigilant.
Weather
Japan Meteorological Agency predicts northern Nagano Prefecture, snow or rain, and a maximum temperature of 10°C (418m) depending on the north wind, cloudy, sometimes sunny, and places. On AMeDAS Hakuba (altitude 703m), the temperature is 1.1 ℃ (as of 5:00) and yesterday's highest temperature 13.3℃ (13:00).
