Avalanche Bulletin
更新日時: 2022/03/03 05:30
Hakuba
Alpine Fair
Treeline Fair
Below Treeline Good 日中の昇温と日射の影響に留意
信頼度：○ good □ Fair △ Low
Travel and Terrain Advice
Those who raise the elevation should pay attention to the windslabs that remain on the slopes to the east. This instability remains only in isolated localities, rather than being widespread. Think that just because one slope is okay doesn't mean that another slope is OK. Find terrain that is very steep, convex or isolated, and look for a line that skillfully avoids it. Even if the slab that starts to move is small, if you are scooped off your feet, if there are trees such as shrubs in the outbreak zone or in the runway, it will function as a “trap in the terrain” that will lead to serious consequences. Have a good day with behavioral management that makes good use of safety zones.
Avalanche Problem
ウインドスラブ Wind slab
概要
Avalanche
Yesterday (2nd), fresh snow with moisture that had fallen by morning responded to human stimuli in places with low altitude. And in the afternoon, a point avalanche of wet snow occurred. On the other hand, at high elevations, fresh snow until the morning formed a windslab, and an avalanche of size 1-1.5 occurred on the eastern slope by spontaneously occurring or induced.
Snowpack
Wind slabs due to westerly winds form from the vicinity of the forest limit to the upper part of the forest. Since the amount of snowfall until last morning was small, the scale of its formation is relatively small and local. However, a part of the boundary between the old snow and the winslab has been found in multiple observations where partial coupling is very bad. There will be no snowfall since yesterday, and the weather will improve, but please think that there are places where you should not let your guard down.
Weather
The Meteorological Agency forecasts southern winds, rear, northern winds, cloudy, occasional sunny, and a maximum temperature of 8°C (elevation 418m) for the northern part of Nagano prefecture. At the foot of Mt. Hakuba (elevation 703m), the temperature is -3.8℃ (as of 5:00), and there is no new snowfall in the past 12 hours.
