Avalanche Bulletin
更新日時: 2023/01/18 04:00
Kagura Tanigawa Hotaka
Alpine Fair
Treeline Fair
Below Treeline Good
信頼度：○ good □ Fair △ Low
Travel and Terrain Advice
There was no new snowfall, but at higher elevations, which are more susceptible to wind, new wind slabs may have formed on steep slopes just below the ridge and branch ridges due to snow movement caused by strong southwesterly winds from the night. Please pay attention to bonding. Sunny skies are forecast during the day. If snowballs begin to roll on steep slopes affected by solar radiation, it is a sign that the snowpack is losing strength. Be aware of the possibility of loose snow avalanches from large southerly steep slopes. There are exposed "terrain traps" such as deep gullies, cliffs, rocks, and standing timber that can increase damage even if the size of the avalanche that occurs is small.
Avalanche Problem
ウインドスラブ Wind slab
Ridge, note new wind slab bonding just below the branch ridge
概要
Avalanche
No reports of new avalanches observed yesterday, but visibility was poor.
Snowpack
There is about 15-30 cm of wind-driven snowfall on top of the crust that melt-froze and refroze on the 15th. Bonding is good, but a strong tenperature gradient is observed at the boundary, so caution should be exercised for a further decrease in bonding. Strong southwesterly winds from the night are expected to form new wind slabs on the downwind ridge and just below the ridge. Careful attention should be paid to the bonding of the boundary surfaces.
Weather
As of 4:00, the temperature at Ameda Fujiwara is -3.9°C. No snowfall in the past 24 hours. The Japan Meteorological Agency is forecasting that high pressure will gradually build, but due to the influence of a pressure trough and moist air, it will be sunny and cloudy in the south, and cloudy and sunny in the north, with some snow showers from morning to evening.
