Avalanche Bulletin
更新日時: 2024/01/17 06:00
Myoko
Alpine Low
Treeline Low
Below Treeline Fair
信頼度：○ good □ Fair △ Low
Travel and Terrain Advice
It is a clear day with good visibility. Look around carefully and look for new avalanches. If you spot an avalanche, act on the assumption that the snowpack is still unstable on a slope with similar characteristics (elevation, aspect, shape, etc.) to that one. Regardless of what type of avalanche hazard is present, choosing a slope with a moderate slope is the most effective risk-reduction technique. Please focus on basic behaviors such as stopping in safe areas and skiing one at a time. Have a safe and enjoyable day.
Avalanche Problem
ウインドスラブ Wind slab
A hard snow surface does not mean safety. Beneath the slab is storm snow that has not yet gained sufficient strength. Be wary of slabs that have formed on the flanks of branch ridges and gully terrain. The most likely places to trigger this are where the slab is thin. Carefully observe the terrain and the snowpack surface. Ski cuts on hard slabs can be very dangerous. Reduce the risk with terrain rather than checking snow stability.
ストームスラブ Storm slab
At higher elevations and lower temperatures, sintering proceeds more slowly. We must act on the assumption that snow that has fallen in clumps has not yet gained sufficient strength. Many people avoid wind slabs and look for a location where the wind is less of an influence. However, we need to act on the assumption that if there is a slope there that is steep enough, an avalanche can occur. This is true even in the forest.
概要
Avalanche
No information was received yesterday (16th) due to stormy weather and no one entering the mountain.
Snowpack
New snowfall due to stormy weather on the 15th and 16th resulted in 70-100 cm in the upper part of the below treeline. Yesterday (16th), the snowfall weakened, but the ski lifts were closed due to fierce winds. It is important to consider that wind slabs are forming in various areas, including those at lower elevations, and that the rate of stabilization varies from place to place.
Weather
The Japan Meteorological Agency is forecasting a southerly wind, clear skies, and a daytime high of 8 °C (13 m elevation) for the Joetsu region of Niigata Prefecture. At Sasagamine, Myoko (elevation 1,310 m), the temperature is -9 °C (as of 4:45 a.m.), with no new snowfall in the past 12 hours.
