Wind slab
- Alle Höhenlagen
GC for 24/01. Snowpack instabilities on NE to SE aspects above 850 metres. Moderate Hazard.
GC for 24/01. Snowpack instabilities on NE to SE aspects above 850 metres. Moderate Hazard.
Forecast Snow Stability: Fresh windslab will build through the day, on North-East to South-East aspects above 850 metres. Wind sheltered locations, such as coire rims, gully tops and steep scarp slopes will be most affected. The existing snowpack, will begin to slowly consolidate in the cooler temperatures, but some wet instabilities may persist. Fresh unstable cornices will build above these aspects. Other aspects will be generally stable and will slowly become firm. The avalanche hazard will be Moderate.
Forecast Weather Influences: Showers of sleet and rain will fade out this evening. During the day there will be showers of snow above 850 metres. Winds will be mainly Westerly throughout the period, storm force overnight and then slowly moderating through the day to strong. Freezing levels will fall to around 850 metres by dawn, and remain there through the day. Observed Weather Influences: Showers, of snow above 600 metres, turned to heavy rain at all levels by midday. Freezing levels were initially 700 metres, but soon rose to well above the summits. Very strong Southerly winds veered to become South-Westerly and increased to storm force during the afternoon. ObservedSnowStability: In steep, wind sheltered, North to East aspects above 800 metres, there are fresh accumulations of soft windslab. There is some weakness within this windslab, mainly due to graupel. In the afternoon, heavy rain and warm temperatures created further instability within this windslab. South to West slopes are generally stable and softening. The avalanche hazard is Considerable.
Bulletin data: Scottish Avalanche Information Service (via EAWS / avalanche.report)