Avalanche Bulletin
更新日時: 2025/03/27 06:30
Myoko
Alpine Fair
Treeline Fair
Below Treeline Fair
信頼度：○ good □ Fair △ Low
Travel and Terrain Advice
This is a day when a glide avalanche of significant magnitude is possible below treeline. Stay clear of slopes with glide cracks, and move quickly and keep clear of your companions when passing below them. When descending the forest road at the end of a long tour, pay close attention to the slope on its side. It is important to maintain good communication with your companions and control the group until you have completely descended the mountain.
Avalanche Problem
全層雪崩 Glide slab
Continued high temperatures at lower elevations have resulted in large amounts of melt water. A frozen snow surface in the morning does not mean it is safe. Stay away from slopes with glide cracks.
点発生湿雪雪崩 Wet Loose snow
Even in Alpine, positive temperatures have continued since yesterday afternoon. Point avalanches can also occur in the forest, so always think about where you are (in the avalanche terrain?). Always think about where you are (are you in avalanche terrain?).
概要
Avalanche
Yesterday (26th), size 1.5 and 2 glide avalanches were observed below treeline. Several snow block collapses from cliff-like terrain were also reported.
Snowpack
Below treeline, high temperatures continue, and meltwater is plentiful. The upper layer of snowpack is also thick and wet. In addition, extremely high temperatures are predicted today due to a foehn phenomenon caused by a low-pressure system passing over the Tohoku region. Rapid snowmelt will be progressing, and the risk of glide avalanche will increase accordingly.
Weather
The Japan Meteorological Agency is forecasting southerly winds, clear skies, afternoon to cloudy skies, late afternoon, rain, and daytime high temperatures of 28 °C (13 m elevation) for the Joetsu region of Niigata Prefecture. At Sasagamine, Myoko (elevation 1,310 m), the temperature is 7 °C (as of 4:45 a.m.), with no new precipitation in the past 24 hours.
