Avalanche Bulletin
更新日時: 2023/02/08 06:00
Myoko
Alpine Good Note the start of snowfall
Treeline Good
Below Treeline Good
信頼度：○ good □ Fair △ Low
Travel and Terrain Advice
Generally safe avalanche conditions. In the alpine, watch out for wind slabs on isolated terrain features. Below Treeline, stay away from slopes with glide cracks. The little amount of snowfall this season, so at lower elevations, the original terrain is exposed, and there are also many holes in the gully bottoms. There are many hazards other than avalanches, so please assess the "terrain trap" elements and choose a safe route. The weather is slowly getting worse. Plan your activities with this in mind.
Avalanche Problem
ウインドスラブ Wind slab
概要
Avalanche
Yesterday (February 6), a size 1.5-2 glide avalanche was reported. Several size 1 wet loose snow avalanches were also reported.
Snowpack
At higher elevations, where the wind has a strong influence, hard wind slabs form on the leeward side of isolated terrain features. On steep slopes, which are strongly influenced by solar radiation and temperature, the snow surface layer has become sufficiently wet to cause yesterday's loose snow avalanches and glide avalanches. Even on the northern slopes where there was dry snow, the snow has turned moist at lower elevations.
Weather
The Japan Meteorological Agency is forecasting winds from the south, then northwest, cloudy, with snow or rain in the afternoon, and a high of 9° (at 13 m elevation) for the Joetsu area of Niigata Prefecture. At Sasagamine, Myoko (elevation 1,310 m), the temperature is -4° (as of 4:45 a.m.).
