Avalanche Bulletin
更新日時: 2022/01/17 06:00
Myoko
Alpine Fair
Treeline Fair 妙高山域の西側は「2 留意（Moderate）」
Below Treeline Fair
信頼度：○ good □ Fair △ Low
Travel and Terrain Advice
Beware of unstable snow in extreme terrain geometries, etc. Even if the snow on the surface layer moves small, such as a steep narrow swamp or a funnel-shaped terrain, the risk rises where it gathers. Think about whether there are any traps in the terrain under the slopes you want to slide. On the slopes facing south at low elevations, snow depressions due to previous glide cracks can be seen. It's also important to imagine what it looks like under the snow, which seems comfortable. The weather is clearly going downhill for tomorrow. An action plan that takes that into account.
Avalanche Problem
ストームスラブ Storm slab
妙高山域の西側のみ局所的な降雪あり。
概要
Avalanche
There is no observation report of a the new avalanche yesterday (16th). In the adjacent Hakuba Mountains, small point avalanches have been observed and reported due to snow that began shaking yesterday from noon.
Snowpack
Snow in stormy weather proceeds settling smoothly, and no noticeable vulnerability has been observed in the snow surface layer. In the west of the Myoko Mountains, there is a local snowfall at a high altitude, and the formation of slabs is suspected due to this.
Weather
The Japan Meteorological Agency predicts a westerly wind, slightly stronger, snow or rain, and a maximum temperature of 3℃ (elevation 13m) for the Joetsu region of Niigata prefecture. At Myoko Sasagamine (elevation 1310m), there was a temperature of -8 ℃ (as of 5:00), 2 cm in the past 12 hours, and snowfall of 15 cm in the past 24 hours.
