Testing for weak layers on a SE aspect...
Multiple weaknesses were found mainly due to the large quantities of graupel within the snowpack.
Sunday, January 31, 2010
Saturday, January 30, 2010
Lots of Corrie action
It's been a good day to be out and about in the hills for skiing, climbing or practicing your winter skills. The winds were much lighter than expected and visibility improved. There were many ascents of all grades on the buttresses and in gullies today... Conditions are great!
Friday, January 29, 2010
Another day at the office
Temperatures were extremely cold in the Cairngorms today....Minus 9 on the summit with a strong Northerly wind. The new windslab accumulations contain a large percentage of grauple leading to snowpack weaknesses. Grauple starts its life as a snow crystal and whilst in the atmosphere depending on humidity levels riming develops covering the crystal which can eventually form a ball bearing like shape.
Tuesday, January 26, 2010
Thawing and Damp
A thaw has helped with the consolidation of the snowpack the forecast refreeze should really improve the climbing conditions.
Monday, January 25, 2010
Good conditions with biting cold winds
Looking toward the Fiacaill Buttress in Coirean t Sneachda
Blocks forming underfoot - a good indicator of a weakness in the snowpack
Conditions are generally very good but with much digging on cliffs to find belays etc, good walking and good snowcover. Some unstable windslab forming on E to S to W aspect blocks release underfoot as shown on photo on a E aspect at 1000 m.
Blocks forming underfoot - a good indicator of a weakness in the snowpack
Conditions are generally very good but with much digging on cliffs to find belays etc, good walking and good snowcover. Some unstable windslab forming on E to S to W aspect blocks release underfoot as shown on photo on a E aspect at 1000 m.
Sunday, January 24, 2010
Many routes climbed today
Conditions have been great for skiing and climbing and the visibility improved dramatically once it stopped snowing around midday. Many climbers were making the most of the good conditions especially in the Northern Corries (note all the black dots!) .
Friday, January 22, 2010
Calm dry day
Conditions in Coire Laogh Mor today: Wind scoured up to the base of the Coire... yesterday's windslab accumulations lie on NW to NE aspects.
Thursday, January 21, 2010
Wednesday, January 20, 2010
Windy with heavy drifting
It has been a day of very strong gales and blizzards above 500 metres -
see pic illustrating conditions today at 600m Andy Nisbett (Who else) and friend enjoying the weather.
Monday, January 18, 2010
Mild with firm snow
Coire an T Sneachda
The snowpack is pretty icy and firm - so easy walking - good snow in gullies - a great improvement.!
Sunday, January 17, 2010
Everyone's is digging
The weather has calmed down enough to allow the Cairngorm mountain staff to finally start excavating the funicular railway line. Not an easy job as the snowpack has a hard crust after yesterday's thaw freeze cycle. Well done to the diggers!!
Saturday, January 16, 2010
A stormy day
Very strong winds eased as the day progressed with clearer skys. Creag an Leth-choin (Lurchers crag)
Friday, January 15, 2010
Strong winds and rising temperatures
It's been a wild weather day, with very strong South winds and drifting snow from around 500 metres. Even the reindeer herd found it tough hence taking shelter in the Ciste car park beneath the huge piles of ploughed snow.
Thursday, January 14, 2010
A lull before the storm
Heading up to the Chais car parkCairngorm mountain staff working very hard as they use JCB diggers to carve their way through the 3 metre drifts on the link roads.
Wednesday, January 13, 2010
Windy - Heavy Drifting
Substantial drifting on a South-Easterly wind has been taking place, for 3 days now.
The above clip is at about 850m alt on a NW aspect.
Very poor visibility - High avalanche hazard - good route choice required.
Sunday, January 10, 2010
Avalanche day
Six separate avalanches were noted today on Westerly and North-West aspects. One was triggered on the Chais Headwall. There has been a lot of drifting and new windslab is overlying the soft snow from yesterday. This is making the snowpack very unstable and the picture below demonstrates the windslab failing on isolation on the soft snow beneath. Drifting on across the Chais ridge on a strong Easterly wind.
Saturday, January 09, 2010
Friday, January 08, 2010
Wednesday, January 06, 2010
Poor viz with Clear spells
Hells Lum
Snow depth at plateau level
Descending into the Coire Raibert
Snow depth at plateau level
Descending into the Coire Raibert
The snowpack is very variable with some very poorly bonded snow on southerly aspects when it starts to steepen. on other aspects cracks appeaered in the surface layers underfoot.
Sunday, January 03, 2010
Cold, calm but no visibility
Saturday, January 02, 2010
Snow cleared during the afternoon
Friday, January 01, 2010
Happy New Year
It's still snowing in the Cairngorms, there is an incredible amount of snow here at Glenmore Lodge and its difficult for the snow plough man to find enough room to put it all! We think this giant marshmallow shaped mound could be a car.
Mean while in the mountains conditions are very unstable so careful route choice is needed, and the snow is very soft and deep so without snow shoes or ski's travel is very arduous.
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