Wind slab
- Toutes altitudes
GC7/1 v.light new snow old snow will start to re-freeze unstable windslab gully exits and scarp slopes cornices weak av haz low
GC7/1 v.light new snow old snow will start to re-freeze unstable windslab gully exits and scarp slopes cornices weak av haz low
Forecast Snow Stability: Mild and wet conditions overnight will moisten the snowpack. Cooler conditions by morning will start to re-freeze the existing snowpack at higher levels giving good general stability. Light falls of new snow through the day will form localised areas of windslab in the most sheltered locations with gully exits and North to Easterly corrie rims most affected. These areas are not expected to be deep or extensive. Any fresh cornices will be fragile. The avalanche hazard will be Low.
Forecast Weather Influences: Overnight the freezing level will rise to around 1700 metres. Rain or sleet will affect all levels. By morning the freezing level is expected to be around 950 metres. Light snow showers will fall above 800 metres. Winds will be generally Southerly fresh in the morning becoming strong later. Observed Weather Influences: Overnight precipitation heavy at times fell as snow on the highest slopes, South-Westerly gales overnight have become fresh to strong today. The freezing level is hovering around the highest summits. ObservedSnowStability: A period of higher instability occurred through the night as new snow heavier than expected affected slopes above 1000 metres. At lower levels the snow pack is soft and wet with good general stability, drier above 1000 metres areas of windslab exist in sheltered gullies and on slopes with a North to Easterly aspect. Where windslab accumulations have attained depth stability is marginal. Avalanche debris noted at 950 metres on a North-East aspect. The avalanche hazard is Moderate.
Bulletin data: Scottish Avalanche Information Service (via EAWS / avalanche.report)