NORTHERN CAIRNGORMS AVALANCHE HAZARD 1500 HRS SAT 21/12/02 Trace amounts of new snow were observed but accumulations were negligible. The wind prevailed from the South-East with below freezing temperature from 750m up. The snowpack where sampled on the Great Slab in Coire an Lochan gave an easy shear in the top 20cm. It requires more than high additional load for fracture propagation. The avalanche hazard is Low (Category 1). AVALANCHE HAZARD OUTLOOK SUN 22/12/02 There will be a significant change in the weather of the past several days. Some snow above 600m will be followed by rain near the tops. Avalanches are likely on North aspect slopes above 1000m where the soft slab instability has been previously identified. The avalanche hazard will be Considerable (Category 3). CLIMBING CONDITIONS SNOW DISTRIBUTION: Still complete cover on plateau with thin areas. ICING: Little change from thin on most steep ground, except for some of the ice bulges. COMMENT: Rapid warming and rain will weaken the large glide zone in the Vent. LOCHABER AVALANCHE HAZARD 1500 HRS SAT 21/12/02 Continuing cold conditions have had little effect on the existing snowpack. Above 900m the snowpack remains well bonded and generally stable. High gullies with N and E aspects hold the greatest accumulations The avalanche hazard is Low (Category 1). AVALANCHE HAZARD OUTLOOK SUN 22/12/02 Increasing SE winds with snow overnight will see areas of fresh unstable snow form on sheltered N and W aspects. Rain will gradually replace snow at all but the highest levels overnight and during Sunday. Any significant deposits of unstable snow will generally be restricted to above 1200m. The avalanche hazard will be Moderate (Category 2). CLIMBING CONDITIONS SNOW DISTRIBUTION: Remaining thin. Best cover in high N and E facing gullies. ICING: Still lean. Freezing level expected around the summits on Sunday COMMENT: Looks like an end to the cold conditions for a wee while. GLENCOE AVALANCHE HAZARD 1500 HRS SAT 21/12/02 A light cover of snow remains above 900 metres mainly on Northerly aspects. Isolated pockets of shallow soft snow exist in some sheltered locations at the highest levels. These deposits are not significant and are generally avoidable. The avalanche hazard is Low (Category 1). AVALANCHE HAZARD OUTLOOK SUN 22/12/02 Light snow showers will fall above 500 metres before turning to heavy rain at all levels overnight. Strong South-Easterly winds will initially form pockets of windslab mainly around the tops of sheltered gullies where any older snow deposits remain. A brief period of instability will occur in these areas during the transition to milder wetter conditions. Stability will improve later as rainfall decreases during the course of Sunday. The avalanche hazard will be Moderate (Category 2). CLIMBING CONDITIONS SNOW DISTRIBUTION: Light cover above 900 metres. ICING: Ice forming in watercourses and on rocks above 700 metres on Saturday. Freezing level rising to 1200 metres with rain at all levels on Sunday COMMENT: Hazard of falling rocks and ice during thaw period. SOUTHERN CAIRNGORMS AVALANCHE HAZARD 1500 HRS SAT 21/12/02 A slightly warmer day but the snow remains much the same. Snow cover is thin on most aspects with deeper deposits being found in sheltered locations on NW to NE aspects above 960 metres. The snowpack is generally well bonded with the avalanche hazard Low (Category 1). AVALANCHE HAZARD OUTLOOK SUN 22/12/02 Precipitation overnight will start as snow but change to heavy rain. The overnight rain will ensure new deeper accumulations will pass through an unstable period overnight. Where localised deeper deposits on steeper slopes on NW aspects above 960 metres exist, stability will be moderate. The avalanche hazard will be Moderate (Category 2). CLIMBING CONDITIONS SNOW DISTRIBUTION: A thin covering on most aspects likely to be affected by snow/rain mix. ICING: Subject to thaw. COMMENT: Climbing remains lean. CREAG MEAGAIDH AVALANCHE HAZARD 1500 HRS SAT 21/12/02 It has remained cold and dry with light West South West winds and no further snowfall. Snow cover remains thin with only a dusting at altitudes above 900 metres. Easy gullies remain mostly incomplete with only isolated patches of old well-frozen snow remaining from snowfall in October. The avalanche hazard is Low (Category 1). AVALANCHE HAZARD OUTLOOK SUN 22/12/02 A band of heavy snow will cross the region before turning to rain as the freezing level rises above the summits. Initially snow will be driven on a gale force South-East wind into gullies of a West to North aspect above 900 metres. As there is no base to many slopes, this new snow will quickly bed down and settle in the milder air. The avalanche hazard will remain, Low (Category 1). CLIMBING CONDITIONS SNOW DISTRIBUTION: Very light dusting above 900 metres. ICING: Some good ice in some of the higher side Coires. Not so good in Coire Ardair as most is frozen at source. COMMENT: It looks like goodbye to the little snow we've got. -------------------------------------------------------------------------------