Avalanche Bulletin

更新日時: 2023/03/09 05:30

Hakuba


Alpine Good


Treeline Good


Below Treeline Good


信頼度:○ good □ Fair △ Low

Travel and Terrain Advice

Below Treeline conditions are spring conditions. Slopes that were hard and frozen in the morning lose strength by noon due to rising temperatures and sunny slopes, causing wet loose snow avalanches. Wet snow is very heavy and easily scoots underfoot. Be on the lookout for slides on frozen slopes in the morning and wet snow avalanches from noon. On the large steep south-facing slopes, conditions are such that large scale loose snow avalanches can occur, so be vigilant above yourself. At lower elevations, snowmelt is also advancing from the bottom of the snowpack. Snow bridges are more likely to collapse, so please pay attention to areas where the snow has lost strength, even on the way down the mountain. The weather slowly worsening. Take adequate sun protection and have a good day.

Avalanche Problem

点発生湿雪雪崩 Wet Loose snow


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Be aware of high daytime temperatures and the effects of solar radiation. Also consider the influence of southerly winds. Possible triggering is as of the morning.

全層雪崩 Glide slab


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Stay away from slopes with glide cracks. Be wary of snow blocks on cliffs and very steep slopes.

概要

Avalanche


Yesterday (March 8), numerous wet loose snow avalanches were observed Below Treeline.

Snowpack


Yesterday, extremely high temperatures were recorded at 16.7°C (13:00) at AMeDAS Hakuba. This, combined with strong solar radiation, caused numerous loose snow avalanches below treeline. On the northern slopes above 2,200 m elevation, the snow is still dry.

Weather


The Japan Meteorological Agency is forecasting southerly winds, clear skies, cloudy in the evening, and a high of 21°C (418 m elevation) for northern Nagano Prefecture. At AMeDAS Hakuba (elevation 703 m), the temperature is -1.5°C (as of 5:00), with no new snowfall in the past 12 hours.

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