Avalanche Bulletin
更新日時: 2025/02/23 05:30
Kagura Tanigawa Hotaka
Alpine Low No observational information
Treeline Low
Below Treeline Fair
信頼度：○ good □ Fair △ Low
Travel and Terrain Advice
Beware of storm slabs forming on steep slopes. Even below treeline, beware of triggers from open steep slopes with few trees and abrupt changes in slope. Even if you find yourself in a forested area with a moderate slope, it may be a runout zone of large avalanche terrain. Consider the possibility of avalanches from large avalanche start zones that exist in the alpine area overhead. When regrouping after skiing, try to do so off avalanche terrain and in the safest place possible, such as on a ridge top.
Avalanche Problem
ストームスラブ Storm slab
概要
Avalanche
Yesterday (22nd), several naturally occurring avalanches (size 1) caused by storm slabs from new snowfall were observed on steep slopes in the Kagura area.
Snowpack
Snowfall from this stormy weather is more than 150 cm at higher elevations. Settling is gradually progressing, but attention should be paid to bonding in the upper part of the snowfall. Crusts have formed on the southerly direction and on all slopes below about 1400m, and were buried by snowfall from noon on the 17th. Low-density snowfall may be buried on the boundary surface, requiring attention to bonding. The middle to lower layers of snow in the lower part of this crust are settling and bonding.
Weather
As of 5:00 a.m., 10 cm of snow had fallen in the past 12 hours at 700 m elevation at AMeDAS Fujiwara, and more than 20 cm had fallen at around 1,300 m elevation. The Japan Meteorological Agency is forecasting a winter pressure pattern, with cloudy skies and occasional sunshine until late afternoon in the foothills of northern Gunma Prefecture due to the influence of a pressure trough and cold air, with snowfall in some areas.
