Avalanche Bulletin
更新日時: 2025/02/27 06:30
Myoko
Alpine Low
Treeline Low
Below Treeline Fair
信頼度：○ good □ Fair △ Low
Travel and Terrain Advice
Please be mindful of the bonding of the old snow with the new snow that fell yesterday and the effect of solar radiation on the new snow. Also, at higher elevations, be aware of areas where new snow has redistributed and formed wind slabs. If conditions are not clear, it is important to use terrain to provide a safety margin. Avoiding convex or unsupported terrain and slightly slackening the angle of the slope can greatly lower the risk of avalanche. Glide cracks that have been hidden by fresh snow are, once again, beginning to open their mouths. Be vigilant at the turn of the slopes. Have a good day.
Avalanche Problem
ストームスラブ Storm slab
Check the bonding between the new snow and the old snow. Strong sunlight can work to improve bonding conditions, and at the same time, it can work to strengthen the characteristics of the new snow slab and increase its sensitivity to triggering.
点発生湿雪雪崩 Wet Loose snow
Rating is as of morning. Watch out for snow changes on steep slopes with strong sunlight.
全層雪崩 Glide slab
Watch out for unstable snow in extreme terrain formations that already have glide cracks in them.
概要
Avalanche
Yesterday (26th), some size 1 wet loose snow avalanches were reported below treeline.
Snowpack
A pressure trough passed overhead during the day yesterday, and the weather worsened accordingly. In the higher elevations, it appears that snow fell, but there is no reliable information on the amount of snowfall. In the neighboring Hakuba Mountains, the bonding of new snow and old snow was reported to be poor as of yesterday. Those who are aiming for higher elevations today are advised to check the degree of bonding between new snow and old snow.
Weather
The Japan Meteorological Agency is forecasting westerly winds, later, southerly winds, cloudy, sunny from midday, with a daytime high of 11 °C (13 m elevation) for the Joetsu region of Niigata Prefecture. At Sasagamine, Myoko (elevation 1,310 m), the temperature is -4 °C (as of 4:45 a.m.), with no new snowfall in the past 24 hours.
