NORTHERN CAIRNGORMS AVALANCHE HAZARD 1500 HRS WED 26/2/03 Strong Southerly winds continued for another day. There is on some high North aspects a surface slab up to 5 centimetres thick that breaks out easily by boot penetration but shows no shear characteristics across the slope. The avalanche hazard is Low (Category 1). AVALANCHE HAZARD OUTLOOK THU 27/2/03 Light snow amounts and slightly rising temperatures will not significantly alter snow stability. Some more extensive areas of slab will develop on North aspects above 900 metres. This will require high additional load to trigger any instability. The avalanche hazard will be Moderate (Category 2). CLIMBING CONDITIONS SNOW DISTRIBUTION: What remains is resilient to the wind treatment and remaining firm above 700 metres. ICING: Low humidity values seem to be helping preserve what there is. COMMENT: Careful route-finding still worthwhile practice in the larger snow zones, for example the Great Slab. LOCHABER AVALANCHE HAZARD 1500 HRS WED 26/2/03 Cooler, dry conditions overnight and during Wednesday have seen the snowpack gradually consolidate at all levels. Stability is generally good. Isolated surface instabilities are present and are restricted to steep N aspects, and are generally avoidable. The avalanche hazard is Low (Category 1). AVALANCHE HAZARD OUTLOOK THU 27/2/03 After a dry night with little change, increasing rain and strong SE winds will move into the forecast area during Thursday. Snowpack stability will be generally good, but surface wet snow instabilities will form on steep aspects as rainfall increases during Thursday. The avalanche hazard will be Moderate (Category 2). Cornices will become increasingly suspect. CLIMBING CONDITIONS SNOW DISTRIBUTION: Becoming leaner at all levels, best cover in high N and E facing corries. ICING: Water ice remaining above 600m, becoming thin and wet. COMMENT: Strong winds continuing on Thursday. Hazard of rock and icefall in thaw conditions. GLENCOE AVALANCHE HAZARD 1500 HRS WED 26/2/03 The snowpack is becoming soft and moist at all levels. Stability is generally good in most locations. Isolated surface wet snow instabilities remain on the steepest slopes but are generally avoidable. The avalanche hazard is Low (Category 1). AVALANCHE HAZARD OUTLOOK THU 27/2/03 Freezing levels will remain well above the tops for the outlook period. Rain light at first becoming more persistent by midday will gradually saturate and reduce the snowpack. The snowpack will be soft and moist at all levels. Stability will remain good on all but the steepest slopes where wet snow instabilities will start to form as precipitation becomes heavier. The avalanche hazard will be Moderate (Category 2). Cornices will remain prone to collapse. CLIMBING CONDITIONS SNOW DISTRIBUTION: Snow above 800 metres mainly in high Northerly facing corries and gullies. ICING: Ice above 700m generally thawing. COMMENT: Hazard of falling rocks and ice with freezing levels around 1500m and persistent rain later on Thursday. SOUTHERN CAIRNGORMS AVALANCHE HAZARD 1500 HRS WED 26/2/03 There was no new precipitation with skies remaining clear both overnight and during the day. Snow was noticeably firmer and in areas previously exposed to the sun it was icy. Cover is patchy and restricted mainly to sheltered headwalls, gullies and burns with more extensive areas on E to S aspects. The avalanche hazard is Low (Category 1). AVALANCHE HAZARD OUTLOOK THU 27/2/03 In the afternoon the freezing levels will rise to well above the summits and there will be some light rain. Snow cover will soften but it will remain generally well bonded. The avalanche hazard will be Low (Category 1). Falling ice and rocks will be a hazard. CLIMBING CONDITIONS SNOW DISTRIBUTION: Patchy cover. More extensive areas on E to S aspects. ICING: Has thinned out at lower altitudes and will be subject to thaw. COMMENT: Some footpaths and tracks are very icy. CREAG MEAGAIDH AVALANCHE HAZARD 1500 HRS WED 26/2/03 It was another dry day with Strong South-East wind and the freezing level at the summits. Above 900 metres freeze-thaw cycles have improved snowpack stability with firm generally well bonded snow on all aspects. The avalanche hazard is Low (Category 1). At lower levels slow thaw continues softening surface layers, but still leaving general stability good. In places large cornices still exist above steep aspects and these remain suspect in milder air. AVALANCHE HAZARD OUTLOOK THU 27/2/03 There will be light sleet or rain with freezing levels remaining above the summits and strong South-East wind. Localised wet snow instabilities will develop on steep aspects above 850 metres. The avalanche hazard will be Moderate (Category 2). Elsewhere general snowpack stability will remain good, although surface deposits will soften and become wet. However large cornices above many steep aspects will again become increasingly unstable. Debris will travel long distances so take care in terrain traps e.g. The Window. Rock and falling ice will also be a hazard from the cliffs of Coire Ardair. CLIMBING CONDITIONS SNOW DISTRIBUTION: Patchy but remaining reasonable in gullies and high corries. ICING: Thawing slowly but generally still good. COMMENT: Hopefully the thaw will not continue too long, so keep your fingers crossed. -------------------------------------------------------------------------------