Avalanche Bulletin
更新日時: 2023/03/26 05:30
Hakuba
Alpine Low It appears to have snowed at High Alpine.
Treeline Fair
Below Treeline Fair
信頼度：○ good □ Fair △ Low
Travel and Terrain Advice
Continued rainfall has wetted the entire snowpack Below Treeline and reduced its strength. Be alert for slopes with glide cracks and leftover snow blocks. Glide cracks occur where the slope changes significantly. If you are on a slope where you cannot see what is ahead, do not slide into the slope suddenly, but stop at a position where you can afford to do so and check what is ahead. Snow is also breaking up on the ridge and just off the ridge. Gully is cracking and water levels are increasing. Please plan your activities safely, assuming that the descent routes that were usable during the high season will not be available.
Avalanche Problem
全層雪崩 Glide slab
点発生湿雪雪崩 Wet Loose snow
ストームスラブ Storm slab
Due to snowfall since yesterday.
概要
Avalanche
Yesterday (March 25), a human-triggered size 1 wet loose snow avalanche was reported around Treeline. No other avalanches were observed due to poor visibility, but several size 2-2.5 glide avalanches were observed below 1500 m elevation in the adjacent Myoko Mountains.
Snowpack
Rainfall has increased the risk of glide avalanches in all directions, especially below 1,500 m elevation. Although it appears to have snowed in I-Alpine, there is a lack of information and a high degree of uncertainty.
Weather
The Japan Meteorological Agency is forecasting winds from the south, later from the north, rain, and a maximum temperature of 11°C (418 m elevation) for northern Nagano Prefecture. At Amedas Hakuba (elevation 703 m), the temperature is 6.3°C (as of 5:00). Yesterday, at Amedas Hakuba, a maximum temperature of 9.6°C (at 16:00) was recorded.
