Avalanche Bulletin
更新日時: 2025/02/25 05:30
Niseko Yotei Yoichi Shiribeshi
Alpine Good
Treeline Good
Below Treeline Good
信頼度：○ good □ Fair △ Low
Travel and Terrain Advice
Warm temperatures today may result in heavy conditions at lower elevations and wet loose activity in steep terrain. Be mindful of what is below you when traversing steep slopes below treeline. At upper elevations, pockets of wind slab remain in protected areas. Continue to reassess conditions throughout the day as the temperature and sunshine affects conditions.
Avalanche Problem
ウインドスラブ Wind slab
Wind slabs remain in the alpine and below ridgeline where westerly winds have redistributed the latest storm snow onto lee slopes. These slab appear reactive in steep terrain where accumulation is higher.
点発生湿雪雪崩 Wet Loose snow
With a warm sunny day forecast we can expect the possibility of loose wet activity at lower elevations as temperatures rise above freezing. Watch for wet loose activity in southerly aspects in steep terrain during the middle part of the day.
概要
Avalanche
A human triggered size 1 wind slab was triggered by a ski cut yesterday on a south westerly aspect below ridge line in the Niseko area.
Snowpack
The mid to lower pack remains well bonded and consolidated. The upper snowpack contains multiple melt-freeze curst on solar aspects. In the Kiroro region, a graupel layer has been reported down 40cm in the latest new snow. We have received no new snowfall overnight.
Weather
A bright and sunny day is expected with light winds from the west changing to the south west in the afternoon and rising to moderate. Temperatures will rise above freezing at lower elevations.
