Avalanche Bulletin
更新日時: 2022/02/27 06:00
Myoko
Alpine Fair 降雪強度で危険度は上昇
Treeline Good 降雪強度で危険度は上昇
Below Treeline Fair 昇温および降雨に警戒
信頼度：○ good □ Fair △ Low
Travel and Terrain Advice
At the moment, the risk of avalanches is low, but at high altitudes, the danger level will increase in the later snowfall situation. There is a forecast that there will be snowfall when the front passes during the day. Pay attention to its snowfall intensity and condition with the old snow surface. Even a very small avalanche will scoop up your feet. If a terrain trap is added to it (for example, a cliff below or a glide crack), it will have a serious ending. The possibility of rainfall is suggested at very low elevations. In that case, do not approach slopes with glide cracks.
Avalanche Problem
全層雪崩 Glide slab
グライドクラックの入った極端な地形にて
概要
Avalanche
Yesterday (26th), a large number of size 1 wet snow points or snowballs were observed on slopes where the effects of solar radiation and temperature rise were strong.
Snowpack
The instability of snow in stormy weather has been resolved, and the instability of time-elapsed wind slabs remains in the terrain at high elevations. Yesterday's warming up and solar radiation melted snow at low elevations and caused an avalanche of wet snow. Even if there is no solar radiation today, the same temperature rise as the previous day and the possibility of rainfall have also been suggested, so it will be a factor that greatly reduces the intensity of snow cover.
Weather
The Japan Meteorological Agency predicts southern winds, slightly stronger, later, west winds, cloudy, morning to afternoon, rain or snow, and a maximum temperature of 9℃ (elevation 13 m) for the Joetsu region of Niigata prefecture. At Myoko Kanzan (altitude 350 m), the temperature is 4.5℃ (as of 5:00), and there is no new snowfall in the past 12 hours.
