Wind slab
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GC18/1Cold+new snow. Unstable windslab sheltered gullies+N-E-S aspects 850m+ cornices fragile Hazard Considerable Exposed slopes icy
GC18/1Cold+new snow. Unstable windslab sheltered gullies+N-E-S aspects 850m+ cornices fragile Hazard Considerable Exposed slopes icy
Forecast Snow Stability: Cold conditions will maintain in-depth weaknesses where deeper windslab exists on steeper slopes. New snow and wind transport of existing deposits will additionally load these areas. Areas most affected will be summit gullies and steep scarp slopes with a North through East to Southerly aspect above 850 metres. Windward slopes and areas clear of windslab will be mainly stable with firm snow becoming icy in places. Cornices will be fragile. The avalanche hazard will be Considerable.
Forecast Weather Influences: New snow will affect the area overnight and through Wednesday (amounts of new snow are uncertain). Winds will be fresh to strong generally North-Westerly. It will remain cold with the freezing level around 300 metres. Observed Weather Influences: Cold Westerly airflow is affecting the area, freezing occurred at all levels overnight rising to around 400 metres through the day. Winds have been fresh occasionally strong with snow showers and sunny spells. Summit temperatures around -6 centigrade. ObservedSnowStability: Areas of unstable windslab exist in wind sheltered locations, greatest accumulations are mainly in sheltered gullies and on slopes with a Northerly to Easterly aspect above 850 metres. Fragile cornices exist above some of these slopes. Stability on windward slopes is generally good becoming icy in places. The avalanche hazard is Moderate.
Bulletin data: Scottish Avalanche Information Service (via EAWS / avalanche.report)