Avalanche Bulletin
更新日時: 2025/03/31 05:30
Hakuba
Alpine Fair
Treeline Good
Below Treeline Good
信頼度：○ good □ Fair △ Low
Travel and Terrain Advice
At higher elevations, watch out for wind slabs that form in terrain pockets. Underneath the slab is a hard snow surface, so even a small avalanche can cause a slip and fall hazard. A hard, rough snow surface is hidden under the new snow. It is easy to fall down, so please ski carefully. When passing under glide cracks, please move quickly and keep a good distance from your companions. Even if the likelihood of occurrence is low, hitting a snow block can have serious consequences.
Avalanche Problem
ウインドスラブ Wind slab
Watch out for wind slabs forming in very steep terrain pockets.
全層雪崩 Glide slab
Beware of collapsing snow blocks that remain in extreme terrain.
概要
Avalanche
No new avalanches were reported yesterday (30th).
Snowpack
Over the past two days, only at higher elevations, there has been a weak snowfall, with about 10 cm of new snow. This new snow was moved yesterday by relatively strong westerly or northerly winds, forming thin wind slabs. Hard snow surfaces are exposed on wind-beaten ridges and slopes, and slabs are present in terrain pockets.
Weather
The JMA is forecasting northerly winds, clear skies, mornings and evenings, cloudy skies, and daytime highs of 10 °C (418 m elevation) for northern Nagano Prefecture. At Amedas Hakuba (elevation 703 m), the temperature is -3.2 °C (as of 5:00 a.m.), with no precipitation in the past 24 hours. At the main ridge (elevation 2,400 m), the temperature is -11 °C (as of 5:00) with northerly winds averaging 3 m/s and max. instantaneous 4 m/s.
