Avalanche Bulletin
更新日時: 2023/03/11 06:00
Myoko
Alpine Low Be on the lookout for wind slab formation.
Treeline Low Wind slabs in terrain pockets and steep south-facing slopes, be aware of high daytime temperatures and solar radiation effects.
Below Treeline Fair Beware of high daytime temperatures and the effects of solar radiation
信頼度：○ good □ Fair △ Low
Travel and Terrain Advice
At higher elevations, be on the lookout for wind slabs formed by yesterday's snowfall. Since very strong winds were blowing, hard, frozen snow surfaces are exposed on the ridge tops, so be careful of slips and falls. On the steep south-facing slopes, please consider the effects of high daytime temperatures and solar radiation. In the morning, new snow may be bonding with old snow, but by midday its strength will diminish. Near the base of the mountain, snow is melting rapidly. Watch for snow blocks and glide avalanches on steep slopes on both sides of gully terrain. It is important to act with caution above yourself. Have a good day.
Avalanche Problem
ウインドスラブ Wind slab
Very strong winds were blowing yesterday in Alpine. Yesterday's snow moved to the leeward side and formed wind slabs.
点発生湿雪雪崩 Wet Loose snow
Be aware of rising temperatures during the day and the effects of solar radiation.
全層雪崩 Glide slab
Watch for glide avalanches in all directions and at lower elevations. Stay away from slopes with glide cracks.
概要
Avalanche
Yesterday (March 10), a size 1 loose snow avalanche of size 1 wet avalanche was reported near the treeline. With few people entering the mountain, information in the mountains is limited.
Snowpack
Rainfall from early yesterday morning turned to snow at higher elevations. The freezing level was observed to be generally at 1,500 m. As of yesterday, this wet snow was producing loose snow avalanches. At the base of the mountain, positive temperatures have continued through this morning, and the snow is melting.
Weather
The Japan Meteorological Agency is forecasting winds from the south, later from the north, and clear skies with a maximum temperature of 18°C (13 m above sea level) for the Joetsu region of Niigata Prefecture. At Myoko Sasagamine (elevation 1,310 m), the temperature is 0° (as of 4:45 a.m.).
