Southern Cairngorms

SC 11.01.23 New unstable windslab building, mainly NW,N to E aspects above 900m. Avalanche hazard Considerable.

SC 11.01.23 New unstable windslab building, mainly NW,N to E aspects above 900m. Avalanche hazard Considerable.

Forecast Snow Stability: Deeper accumulations of unstable windslab will develop, mainly on North-West through North to East aspects above 900 metres. Steep wind sheltered locations such as corrie rims and gully tops will be most affected. Cornices will also continue to develop in these locations. Snowcover exposed to the winds will remain firm and often icy. At lower levels occasional deeper drifts of thawing snow will be encountered in any lee locations. The avalanche hazard will be Considerable.

Forecast Weather Influences: The freezing level will drop overnight to around 600 metres with snowfall above this level for most of this period. Winds will be very strong, Mostly West-South-West but backing to the South-West for the morning. Observed Weather Influences: The freezing level was around 900 metres with snow falling above 600 metres. Winds were strong from the South. ObservedSnowStability: Snowfall and drifting has led to moderate to weakly bonded windslab forming on West through North to East aspects. Deepest amounts are present in wind sheltered locations above 900 metres. Soft fragile cornices have also formed in many of these locations. Elsewhere, isolated deeper drifts have formed in lee locations, exposed terrain is scoured, often icy. The avalanche hazard is Considerable.