Avalanche Bulletin
更新日時: 2025/01/10 07:00
Niseko Yotei Yoichi Shiribeshi
Alpine Fair Limited alpine observations reduce our confidence in the alpine hazard rating.
Treeline Fair Avalanche hazard will increase as temperatures rise today
Below Treeline Good Avalanche hazard will increase as temperatures rise today
信頼度：○ good □ Fair △ Low
Travel and Terrain Advice
Today`s rapid rise in temperature may cause slab to develop and become active. Use extra caution if travelling in the warmer parts of the day. Cornices are also soft and undeveloped and may fail with the daytime warming. A cornice fall adds significant new load to a slope and can cause it to fail with a slab release.
Avalanche Problem
ストームスラブ Storm slab
The rapid rise in temperature today will activate the storm slab. Be particularly careful if temperatures are approaching 0C in the area you are travelling.
ウインドスラブ Wind slab
Recent West and NW winds have re-distributed storm snow to leeward slopes.
概要
Avalanche
Several size 1 Loose dry skier accidental avalanches entraining significant amounts of snow and running long distances were reported in the region yesterday.
Snowpack
30-50cms of storm snow has accumulated on a variety of surfaces including hard wind stripped surfaces on North and West aspects, melt freeze crusts on solar aspects and added to drifted snow on leeward and sheltered slopes. The January 6 temperature crust is present up to ~600m.
Weather
Light snow showers are expected to taper off this morning giving way to clearing skies and sunny breaks in the afternoon. Temps overnight were cool but are expected to rise rapidly this morning reaching a high of 0C in the valley at mid-day. Winds have eased off today with light to moderate Northerlies expected through the day.
