Avalanche Bulletin
更新日時: 2022/03/26 07:00
Niseko Yotei Yoichi Shiribeshi
Alpine Good 十分な積雪がある限り、すべての標高帯と方位で、濡れた雪の雪崩や全層雪崩の可能性はある、と考えることが必要です。The potential for wet loose and glide avalanches will remain for the rest of winter on all elevations and aspects as long as we have enough snow coverage to create a hazard.
Treeline Good 十分な積雪がある限り、すべての標高帯と方位で、濡れた雪の雪崩や全層雪崩の可能性はある、と考えることが必要です。The potential for wet loose and glide avalanches will remain for the rest of winter on all elevations and aspects as long as we have enough snow coverage to create a hazard.
Below Treeline Good 十分な積雪がある限り、すべての標高帯と方位で、濡れた雪の雪崩や全層雪崩の可能性はある、と考えることが必要です。The potential for wet loose and glide avalanches will remain for the rest of winter on all elevations and aspects as long as we have enough snow coverage to create a hazard.
信頼度：○ good □ Fair △ Low
Travel and Terrain Advice
As the temperature rises, the condition of the snow surface tends to change. On days when the temperature is high, large avalanches are likely to occur, and the strength of snow bridges over rivers etc. also decreases. Also, please note that rising temperatures will increase the likelihood of wildlife encounters. Today, avalanche information for the Niseko, Mt. Yotei, Yoichi-dake, and Shiribetsudake areas for this season will end. Thank you very much for using it. As we continue to see a rise in temperatures the snow surface conditions will become more variable. The risk of large heavy avalanches on warm days will increase whilst snow bridges over Rivers and Creeks will begin to weaken. Be mindful of local wildlife that you may also encounter as we move into the warmer months . Today marks the end of avalanche information in the Niseko/Yotei/Yoichi/Shiribetsu Area for this season. Thank you very much for your visit.
Avalanche Problem
全層雪崩 Glide slab
春の訪れと共に、標高の高いところでも降雨が多くなります。そうしますと、シーズン中に積もった雪すべてが崩れ落ちる全層雪崩の可能性が高まります。全層雪崩の発生予測はとても難しいのですが、ひとつはっきりしていることは、積雪底面が十分に濡れると危険が増すということです。グライドクラックが崩落し、全層雪崩が発生すると、その被害が大きなものとなる場合があります。As we continue into spring and begin to see more rain on snow events at all elevations the possibility of the full seasonal snowpack releasing will increase. The timing of glide avalanches is very hard to predict but what we do know is that when the base of the snowpack becomes lubricated the hazard increases. When glide cracks release the consequence is always high as we see a failure in the full seasonal snowpack.
点発生湿雪雪崩 Wet Loose snow
凍結高度の上昇に伴い、雪面の雪の強度が低下し、湿った雪による点発生雪崩の可能性が上がります。点発生雪崩は、一点から発生し、扇状に広がりながら流下します。流下する雪崩は、重く、水が流れるような方向へ動きます。雪面の雪が転がるスノーボールは、表層の雪の強度が低下していることを示す明瞭な兆候です。As the freezing level rises wet loose avalanche activity will increase across the region as the snow surface loses cohesion. Wet loose avalanches start from a singular point and fan out building mass as they flow downhill. Staying within their path they flow like a river and become heavy. Roller balling is often a clear indication that the surface is becoming weak.
概要
Avalanche
There are no reports of new avalanches. No new activity has been reported.
Snowpack
Snow cover is something that is often seen in the spring season. We are entering a cycle of thawing and freezing, and this condition will continue for several weeks to come. The temperature inside the snow cover becomes isothermal and becomes wet. This increases the likelihood of all-layer avalanches. The Snowpack is what is expected during spring. We are now in a melt-freeze cycle and this will continue in the coming weeks. The snowpack will become isothermal meaning the full seasonal coverage will heat and Become wet. When this occurs the hazard of climatic full seasonal snow coverage avalanches will increase
Weather
Weather with freezing temperatures and moderate solar radiation will repeat for several weeks in the future. Also, since spring is now, rain accompanied by warm southerly winds will also be experienced more frequently. Rising freezing levels and broken sunshine will become more regular over the coming weeks. We can also expect to see rain on snow events as we continue into spring and southerly Airflows become more dominant.
