Avalanche Bulletin
更新日時: 2024/12/30 07:00
Niseko Yotei Yoichi Shiribeshi
Alpine Fair
Treeline Fair
Below Treeline Good Caution on steep slopes with terrain traps, especially if the sun comes out as forecasted.
信頼度：○ good □ Fair △ Low
Travel and Terrain Advice
1. In higher elevations, watch for newly formed wind slabs on lee aspects. When you notice cracking between your skis, this may be a sign to back off and find lower elevation, sheltered terrain to ski. 2. With the sun forecasted to come out in the afternoon, monitor surface snow for rapid warming possibly creating new avalanche instabilities. Search out more shaded, sheltered terrain.
Avalanche Problem
ウインドスラブ Wind slab
Winds in the alpine are forecasted to decrease but continue to transport snow onto the leeward slopes.
ストームスラブ Storm slab
Some new snow continued to fall last night onto previously loaded slopes keeping storm slabs a problem to monitor. If it becomes sunny in the afternoon, these storm slabs may become more reactive.
概要
Avalanche
A human triggered size 1 storm slab avalanche was observed on Dec 29 on the east aspect of Mt Yotei around 1200m elevation.
Snowpack
15-30cm of new snow has been deposited in the last 24 hours. A sun crust from Dec 28 is buried on solar aspects.
Weather
Light snowfall in the morning and possible sun in the afternoon. The winds are decreasing and the temperature remains cold.
