Avalanche Bulletin
更新日時: 2025/03/12 05:00
Niseko Yotei Yoichi Shiribeshi
Alpine Good
Treeline Good The hazard will increase during the day as temperatures rise.
Below Treeline Good The hazard will increase during the day as temperatures rise.
信頼度：○ good □ Fair △ Low
Travel and Terrain Advice
Another cycle of overnight freezing and rapidly rising daytime temperatures will further promote the current melt freeze cycle. We can expect any surface crust to break down early in the morning at lower elevations with wet loose activity expected in steep terrain. Glide slab activity remains a further possibility with high consequences. Avoidance of terrain below these features should be considered.
Avalanche Problem
点発生湿雪雪崩 Wet Loose snow
The freezing level is expected to rise to 1400 meters today after after temperatures close to zero overnight. This will promote wet loose activity today with all aspects up to higher elevations expected to become heavy and active in steep terrain early in the day.
全層雪崩 Glide slab
High consequence glide slabs remain a concern with continued warm trempreatures. Traveling below these features should be avoided at present.
ウインドスラブ Wind slab
Continued strong to gale south westerly winds have created pockets of isolated wind slabs on lee slopes around ridgeline.
概要
Avalanche
A size 1 skier controlled wet slab avalanche was reported at 900 meters on a south easterly aspect alongside numerous natural size 1 wet loose avalanches at lower elevations on all aspects.
Snowpack
All aspects below 1000 meters are experiencing a melt freeze cycle with solar aspects above this also becoming heavy in the heat of the day. Cold snow was observed in shady aspects in the alpine with isolated pockets of wind slabs found lee to the south west. The upper snow pack contains multiple crusts at present.
Weather
We can expect another day of warm temperatures with the freezing level rising to 1400 meters in the middle of the day. Southerly winds will be light with the possibility of rainfall in the evening.
