更新日時: 2025/01/03 07:00
Alpine Fair Watch out for future wind and snow changes.
Treeline Fair Watch out for future wind and snow changes.
Below Treeline Fair
信頼度:○ good □ Fair △ Low
Watch out for unstable snow on very steep slopes. Even small avalanches can have serious consequences if there are "terrain traps" such as cliffs, trees, or deep gullies below them. Also, the weather is obviously getting worse. Imagine having to bivouac in a very difficult environment if you get into trouble. In the forest at lower elevations, watch out for glide cracks hidden by fresh snow.
Yesterday (2nd), a snow block collapse was reported at a very low elevation. No information has been received for higher elevation locations.
In the upper part of the below treeline, the snow cover surface layer has about 20 cm of recent snowfall with minimal wind effects. The snow in the middle layer of the snowpack, formed by a large snowfall at the end of the year, is sintering and no major problems have been detected. In some very low elevation areas, glide cracks are expanding, partly due to the high temperatures and rainfall over the past few days.
The Japan Meteorological Agency is forecasting winds from the south, later from the west, snow or rain, and daytime highs of 5 °C (13 m elevation) for the Joetsu region of Niigata Prefecture. At Sasagamine, Myoko (elevation 1,310 m), the temperature is -6 °C (as of 4:45 a.m.), with 6 cm of snow having fallen in the past 12 hours.