Avalanche Bulletin
更新日時: 2021/12/09 07:00
Niseko Yotei Yoichi Shiribeshi
Alpine Good アルパインでは地形的な局所に小さいウインドスラブがありえます。It may be possible to find small pockets of Wind Slab in the alpine
Treeline Good 南に向いた急斜面では、日射の影響を強く受ける時間帯で、濡れた雪の点発生雪崩がありえます。Steep south facing terrain could produce Loose Wet avalanches if exposed to extended periods of solar radiation
Below Treeline Good 標高が低いところでは、雪崩を発生させるほどの十分な雪がありません。There is not enough snow at low elevations for avalanches to occur
信頼度：○ good □ Fair △ Low
Travel and Terrain Advice
Skiing in the dangerous and changing conditions inherent at the beginning of the season can be difficult. When skiing or snowboarding, it is a good choice to pay close attention to these hazards and, if possible, wait for a more sufficient amount of snow. Early season hazards and variable conditions present challenging skiing. Ski or ride with caution and be patient as we wait for more snow to arrive.
Avalanche Problem
点発生湿雪雪崩 Wet Loose snow
一年で一番日照時間が少ない時期を迎えていることもあり、日射が積雪を温める影響は小さく、濡れた雪の雪崩の可能性は低くなります。We are approaching the shortest days of the year so the impact of the sun on the snow surface is weak and is unlikely to provide sufficient warming to create loose wet avalanches.
ウインドスラブ Wind slab
移動可能な雪はとても少ないのですが、アルパインでは地形局所に小さいウインドスラブが形成しえます。Very little snow is available for transport however small pockets of wind slab may have formed in the alpine.
概要
Avalanche
There are no reports of new avalanches. No new avalanches have been reported.
Snowpack
Thaw-freezing crusts are formed on the snow surface up to an altitude of 1,000 m. Its lower layer snow cover is well sintered and rests on a re-frozen base. The total snow depth is about 30 to 80 cm. A melt freeze crust has developed on the snow surface up to 1000m. The lower pack is well consolidated and sits on a re-frozen base. Total season snowpack depth varies from 30-80cms.
Weather
The effects of high pressure are predicted to remain until Friday afternoon. However, it is said that low pressure will develop on weekends and return to winter-type atmospheric pressure placement on Monday. A high pressure system remains in the region until Friday afternoon. It will be pushed out by a weak low pressure system that will develop in intensity later In the weekend and a return to winter conditions by Monday.
