Avalanche Bulletin
更新日時: 2024/12/21 06:00
Hakuba
Alpine Fair Strong northerly winds have begun to blow since early this morning. Watch for new wind slabs to form.
Treeline Fair Strong northerly winds have begun to blow since early this morning. Watch for new wind slabs to form.
Below Treeline Fair Watch for timing and intensity of new snowfall. Also watch for wind slabs in the upper treeline.
信頼度：○ good □ Fair △ Low
Travel and Terrain Advice
Note the formation of wind slabs. Around ridges and on the sides of branch ridges are typical places. If the terrain there is shaped in such a way that it will not support a snowpack (convex, isolated, cliffs at the bottom, etc.), do not trust it, even if the snow surface is hard. The season has only just begun. In the lower elevations, there are large holes in the gully, places where the snow is not connected in the first place, and thick bushes that make it difficult to act. Please refer to this season's action record, not last year's record. Also, the stormy weather cycle begins today. We recommend that you take a large safety margin because if you are out of action, you may be forced to stagnate for so long that you do not know when you will be able to escape. It is also a good idea to ski in and out of the ski resort to prepare your body for the real season. Have a good holiday.
Avalanche Problem
ストームスラブ Storm slab
The potential is low, but has the potential for serious consequences.
ウインドスラブ Wind slab
Brand new wind slabs are prone to cracking. Pay attention to snow movement. Increase in size over time.
概要
Avalanche
Yesterday (20th), one naturally occurring size 2.5 slab avalanche was reported on the steep south-east slope near 2650m, and many naturally occurring and induced size 1-1.5 slab avalanches were reported on the northeast to south facing slope between 1300 and 1800m. In addition, many naturally occurring loose snow avalanches of size 1-1.5 were observed on the north-east-south slopes between 2000 and 2800 meters.
Snowpack
The series of snowfalls that continued through the 19th generally had a positive structure with increasing hardness downward, and settling is proceeding smoothly. Yesterday's fine weather and rising temperatures have allowed crusts to form on the sunlit slopes of the lower elevations, but the rest of the snow surface is soft and can easily be carried by the wind.
Weather
The Japan Meteorological Agency is forecasting clear skies and cloudy skies, with snow or rain over a wide area at night, and a daytime high of 9 ℃. At 703 m elevation, the temperature is -9.0 °C (as of 5:00 a.m.), with no new snowfall in the past 12 hours.
