Avalanche Bulletin
更新日時: 2025/03/16 07:00
Niseko Yotei Yoichi Shiribeshi
Alpine Fair Limited alpine observations
Treeline Good
Below Treeline Good
信頼度：○ good □ Fair △ Low
Travel and Terrain Advice
Look for pockets of windslab in sheltered terrain that may be reactive to skier traffic. Skiing conditions are variable and challenging in places with a mix of crusts, wind scoured surfaces and good, cold snow in others. Glide slab avalanches are a concern throughout the spring season so take note of where these have formed and could potentially grow or release catastrophically.
Avalanche Problem
ウインドスラブ Wind slab
Pockets of windslab can be found on terrain that was sheltered from previous NW winds.
全層雪崩 Glide slab
Mild temperatures in the valley combined with limited overnight re-freezing continue to weaken the snowpack
概要
Avalanche
No new avalanches have been reported in the past 24 hours
Snowpack
Storm snow has settled to ~20cms and overlies a rain crust in the BTL zone. On sheltered North and East aspects in the alpine and treeline zones, the storm snow overlies a well settled mid and lower pack. All aspects that were exposed to previous NW winds are scoured and hard. A new melt freeze crust has also formed on solar aspects up to ~800m.
Weather
A ridge of high pressure has settled over Hokkaido this morning however a new low pressure system is approaching from the South. Skies will be mostly overcast all day with light winds shifting from the South to the East later the day. No precipitation is expected until late this evening when moderate snowfall is expected to start. Temperatures will reach a high of 3C in the valley as freezing levels rise to 300m.
