Avalanche Bulletin
更新日時: 2022/02/05 06:00
Myoko
Alpine Fair
Treeline Fair
Below Treeline Fair
信頼度：○ good □ Fair △ Low
Travel and Terrain Advice
It is a day when avalanche conditions rise during the day. If you are inexperienced, fresh snow in the ski area is a fun day. If you are entering the mountain, pay attention to the intensity of snowfall and wind to find out the instability it creates. When you have poor visibility, it is difficult to recognize the dangers above you. Check the route on the topographic map and ask for a stop or rest in a safe place. Choose a place where there is no “terrain trap” at the end of the slope to be glided on, and don't forget the group management to watch over the slippage of your friends in a safe place. The weather tends to deteriorate clearly, so make an action plan that takes that into account.
Avalanche Problem
ストームスラブ Storm slab
概要
Avalanche
Yesterday (4th), multiple point avalanches of size 1 with weak coupling force that recently fell on very steep terrain have been observed.
Snowpack
On top of the snow with low cohesion and low density observed yesterday, stormy snow from the wee hours is resting. In such cases, the snow structure tends to be in an unstable state. It is necessary to pay close attention to its instability, especially in places where yesterday's daytime temperature rise and wind were weak.
Weather
The Meteorological Agency predicts northwestern winds, slightly stronger snow, and a maximum temperature of 1 degree (elevation 13 m) for the Joetsu region of Niigata prefecture. At Myoko Sasagamine (elevation 1310m), the temperature is -9℃ (as of 5:00), and 24 cm snowfall has been observed in the past 12 hours. The Japan Meteorological Agency has announced a heavy snow advisory (12 hours maximum snowfall 60 cm) for the mountains of Myoko City, Joetsu City, and Itoigawa City at 4:31 on the 5th with a high possibility of switching to a warning in the future.
