Avalanche Bulletin
更新日時: 2024/02/20 06:00
Niseko Yotei Yoichi Shiribeshi
Alpine Fair New snow and increasing winds from the Northwest will be a good recipe for windslab development, especially in the alpine.
Treeline Fair New snow and increasing winds from the Northwest will increase windslab development at treeline as well.
Below Treeline Fair Sheltered slopes below treeline will have potential for loose dry and possible storm slab depending on snow fall amounts.
信頼度：○ good □ Fair △ Low
Travel and Terrain Advice
Choose terrain wisely and conservatively as the change in weather brings snow and wind. There will still be an icy surface for some time and slip and slide hazards will be a concern especially on steeper terrain. Variable snow conditions from alpine to below treeline will create challenging riding conditions that will be icy in places and deep with new snow in places.
Avalanche Problem
ウインドスラブ Wind slab
New windslab will form on an icy snow snow surface.
点発生乾雪雪崩 Dry Loose snow
New snow in sheltered terrain will fall on top of an icy snow surface.
概要
Avalanche
No recent avalanches reported. The potential for windslab development will be the main concern with the forecasted snow and winds that will fall on the current icy snow surface.
Snowpack
The lower snow pack is well settled, however the upper snow pack has gone through much change recently. The warm weather caused for a wet upper snowpack that will now freeze and create a hard icy surface and will need time to assess how and if the new snow bonds to the icy surface beneath.
Weather
The recent warm weather is finally giving way to a colder northwest flow that is forecasted to bring moderate to strong northwest winds. Light to moderate precipitation in the form of snow. Temperatures to remain below freezing in the valley bottoms.
