更新日時: 2023/03/21 05:30
Alpine Fair
Treeline Good
Below Treeline Good
信頼度:○ good □ Fair △ Low
This is a "spring cycle" where snow cover intensity varies greatly between morning and mid-day. Climbers and skiers alike should be aware of slip drops in the morning. And notice that the higher temperatures and solar radiation reduce the strength of the snow cover surface layer. If you choose the right time of day and the right slope, you can safely enjoy comfortable corn snow. On the other hand, in alpine areas, the recent snowfall has not yet completely settled in isolated terrain features. Please take this into account when choosing routes and running lines. Melting of snow at lower elevations is progressing. Please be on the lookout for snow blocks falling from the sides of forest roads. Have a good day.
The recent snowfall has not completely settled in isolated terrain features.
Be aware of high daytime temperatures and the effects of solar radiation. Rating is as of morning.
Stay away from slopes with glide cracks. Be alert for collapsing snow blocks.
Yesterday (March 20), numerous wet loose snow avalanches (size 1-1.5) were observed on very steep, sunny slopes. In addition, a slab avalanche (size 1) was observed in the alpine area.
Wet snow avalanches are observed during the day on slopes where the effects of sunny slopes and temperatures are strong. On the other hand, smaller slab avalanches have been observed at isolated terrains where the following conditions apply. Slab formation on higher elevations, shaded slopes, and wind-affected snow. On the southern slopes, the snowpack is isothermalizing to near the treeline. Spring is coming to higher elevations.
The Japan Meteorological Agency is forecasting winds from the south, later from the north, sunny, cloudy in the evening, and a high of 19°C (418 m elevation) for northern Nagano Prefecture. At Amedas Hakuba (elevation 703 m), the temperature is -1.8°C (as of 5:00). Yesterday, at Amedas Hakuba, a maximum temperature of 14.1°C was recorded (at 15:00).