更新日時: 2023/02/28 05:30
Alpine Fair
Treeline Fair Beware of high daytime temperatures and strong solar radiation
Below Treeline Good Watch out for high daytime temperatures and strong solar radiation.
信頼度:○ good □ Fair △ Low
In Alpine, watch out for unstable slabs that remain on very steep slopes. High daytime temperatures and strong solar radiation can significantly alter the snow on the snowpack surface layer today. When snowballs begin to form, it is a sign that the snow on the snowpack surface layer has lost enough strength. Wet snow is very heavy and can easily scoop even a small loose snow avalanche. Also, be on the lookout for glide avalanches at lower elevations. If you are passing through deep gully terrain at the end of your tour, it is necessary to consider that the flanked areas with glide cracks are very high hazard. Please move quickly, and please devise a way to move so that you do not stagnate at the bottom of that slope. The mountains will take on a spring look at once. Don't forget your sunscreen and sunglasses. Have a good day.
Be wary of slab stiffness loss on slopes exposed to strong sunny slopes.
Beware of high daytime temperatures and strong solar radiation
Stay away from slopes that already have glide cracks.
Yesterday (February 27), there was a skier-triggered size 1 slab avalanche on the south slope of Alpine. It was the wind slab that formed on a very steep slope.
Stormy snow has settled and wind slab instability remains on Alpine's very steep slopes. Significant temperature increases are forecast for today, and southerly winds will enter the area. Be alert for rapid snow changes on sunny slopes.
The Japan Meteorological Agency is forecasting a southerly wind, clear skies, and a maximum temperature of 15°C (418 m elevation) for northern Nagano Prefecture. At Amedas Hakuba (elevation 703 m), the temperature is -6.9°C (as of 5:00), with no new snowfall in the past 12 hours.