NORTHERN CAIRNGORMS AVALANCHE HAZARD 1500 HRS WED 15/2/06 There has been snow overnight and during the day on strong South-Westerly winds. Heavy drifting has led to deep accumulations of windslab on steep Northerly to Easterly aspects above 950 metres. A weak soft layer of graupel within sub-surface layers was noted on a North-East aspect at 1080 metres. The avalanche hazard is Considerable (Category 3). AVALANCHE HAZARD OUTLOOK THU 16/2/06 Light snow overnight will turn more showery during the day on strong South-West backing Southerly winds. Unstable windslab will continue to develop and avalanches are likely mainly on steep Northerly to Easterly aspects above 800 metres. Unstable cornices will also affect these aspects. The avalanche hazard will be Considerable (Category 3). CLIMBING CONDITIONS SNOW DISTRIBUTION: Deep drifts developing on N to E aspects. ICING: Buttresses white, conditions improving in cooler temperatures. COMMENT: Unstable cornices developing on N to E aspects. LOCHABER AVALANCHE HAZARD 1500 HRS WED 15/2/06 Snow showers and South-West winds have formed fresh areas of unstable windslab in sheltered locations. Greatest accumulations are on steep North, North-East and East aspects above 1000m. The avalanche hazard is Considerable (Category 3). AVALANCHE HAZARD OUTLOOK THU 16/2/06 Further snow is expected overnight and during Thursday with winds backing from South-West to South. Areas of unstable windslab will continue to form in sheltered locations. Greatest accumulations will be on steep North-West, North, North-East and East aspects above 1000m. Avalanches are likely in these locations. The avalanche hazard will be Considerable (Category 3). CLIMBING CONDITIONS SNOW DISTRIBUTION: Fresh snow lying above 600m. ICING: Freezing level remaining around 750m. COMMENT: Moderate winds will lead to windslab development. GLENCOE AVALANCHE HAZARD 1500 HRS WED 15/2/06 Frequent snow showers above 700 metres with very strong SW winds have affected the area. The greatest accumulations of new snow are in sheltered areas with a NW through to E aspect. Windslab has formed in these locations mainly above 900 metres but especially around the tops of gullies and corrie headwalls and the snowpack is weakly bonded. The avalanche hazard is Considerable (Category 3). AVALANCHE HAZARD OUTLOOK THU 16/2/06 Through Wednesday night and Thursday there will be more snow showers above 600 metres accompanied by strong SW becoming S winds. Windslab will continue to form above 850 metres in sheltered locations on NW through to E aspects. Areas of weakly bonded snow will exist on many steep slopes and in gullies but especially scarp slopes. The avalanche hazard will be Considerable (Category 3). CLIMBING CONDITIONS SNOW DISTRIBUTION: snow above 600m. ICING: Freezing level 750 metres. COMMENT: Heavy snow showers at times. Ridges and buttresses the safer option: care required on approaches and descents. SOUTHERN CAIRNGORMS AVALANCHE HAZARD 1500 HRS WED 15/2/06 Overnight snow showers have given a general light covering of wet snow from around 700 metres. Deeper localised accumulations can be found in sheltered locations on N to E aspects above 900 metres. Some consolidation is evident but where accumulations are on steeper slopes and have depth they are moderately to weakly bonded. The avalanche hazard is Considerable (Category 3). AVALANCHE HAZARD OUTLOOK THU 16/2/06 There will be some further snow showers throughout the period. General cover will remain thin with dee.......erately bonded accumulations being found on scarp slopes and gully exits on N to E aspects above 950 metres. The avalanche hazard will be Moderate (Category 2). CLIMBING CONDITIONS SNOW DISTRIBUTION: Light cover from 700 metres. Greatest amounts around gully exits and on scarp slopes. ICING: Freezing level will be around 750 metres. COMMENT: Moderate snow showers are likely later in the day. CREAG MEAGAIDH AVALANCHE HAZARD 1500 HRS WED 15/2/06 Snow showers on blustery South-West winds have combined to create new humid windslab on steep North to East aspects above 850 metres. Up to 30 cms. of new slab has accumulated in some sheltered areas above 950 metres and some of this lies on much older thawing snow. Snowpack temperatures are relatively mild and bonding is good to the thawing snow-ice, although easier shears showed in near-surface layers during field tests. The avalanche hazard is Considerable (Category 3). AVALANCHE HAZARD OUTLOOK THU 16/2/06 South-West then Southerly winds will continue to feed in snow showers overnight and during Thursday. Steep, sheltered North to East-facing slopes and gully tops above 950 metres will have additional deposits of poorly bonded windslab loaded on to them. Avalanches are likely in these areas. New and fragile cornices will develop over many of these locations. The avalanche hazard will be Considerable (Category 3). CLIMBING CONDITIONS SNOW DISTRIBUTION: Thin cover of new, wet snow down to 500m with better cover above 850m on Wed. ICING: Freezing down to 750m overnight and on Thu. COMMENT: Snow stability will be reasonable below 900m but poorer below cornices, at gully tops and corrie rims. -------------------------------------------------------------------------------