Avalanche Bulletin
更新日時: 2022/01/31 04:42
Kagura Tanigawa Hotaka
Alpine Fair
Treeline Fair
Below Treeline Fair
信頼度：○ good □ Fair △ Low
Travel and Terrain Advice
Pay attention to the presence of storm slabs, which are present on steep slopes. It is expected that the boundary surface with the old snow and the connection within the fresh snow is not progressing. It is necessary to pay attention to triggering in places where the slope changes rapidly or on open steep slopes where trees are sparse. Especially in places like the Tanigawadake area where there are many extreme steep slopes, it is recommended to act in places with a loose slope. It is a forecast that the pressure arrangement of the winter type will continue. Pay attention to changes in weather, such as an increase in snowfall or the effects of wind in the future.
Avalanche Problem
ストームスラブ Storm slab
概要
Avalanche
There were no reports observed yesterday due to poor visibility.
Snowpack
On a steep south-facing slope with a low elevation, crusts are formed due to the influence of solar radiation on the 26th, and where there is a lot of snow, it rests about 70-80 cm, and gradually settling to form soft slabs. A layer with low density was observed on the boundary surface, and there was a report of poor coupling in the vicinity of Tanigawadake, where there are many steep slopes. On the steep slope closer to the south, snowfall is about 30-40 cm above the buried crust on the 29th, and it is expected that there will be a layer of low density inside this snow cover.
Weather
As of 4:00, the temperature is -5.0℃ at AMeDAS Fujiwara. Snowfall continues around the area. According to the Japan Meteorological Agency's announcement at 17:00 on the 30th, the winter type of atmospheric pressure will continue, and the northern part of Gunma prefecture is forecast to be cloudy and snowy due to the influence of barometric valleys and chills in the sky.
