[MCR] Selkirks - Rogers Pass

Subject: [MCR] Selkirks - Rogers Pass
Date: Fri, 11 Nov 2011 18:52:19 -0600
Hello, myself and 2 friends skied the Ursus trees in Rogers PAss today (friday Nov.11)
Here are some observations:
elevation range traveled today: 1300m-2100m
Temperature: warm.  0 degrees at 1300m at 4pm
snowed 15cm throughout the day
wind: calm to light from South
snow depth: 60to100cm
Avalanches:
Size 1.5 slab avalanche was obsered. This slide failed on the Nov7th surface hoar layer. 1950m. NE aspect. slope inclide: est. 27 degrees. depth of slab: est. at 40-60cm. trigger: naural or skier triggered, not sure. The slide crossed the exising uptract to Ursus Trees. STS Couloir on Mt.Cheeops slid to middle of runout (300meters above valley bottom)
Snowpack notables:
1) the Nov.7th surface hoar layer was observed down 50cm today. This layer is ***HIGHLY*** reactive/unstable. stepping on snow-mushrooms/mini convex rolls resulted in immediate failure of this layer with wide spread propagation and shooing cracks. many whoomphs/setlements today. The nov7h surface hoar crystals were observed up to size 7mm; that is relaively big and means that this layer will take a long time to stabilize. The snow above the Nov.7th has formed a soft slab. (4F+ resistance). 2) the middle of the snow pack is dense enough to carry a skier. Really good traveling conditions for this time of year. I would rate danger as considerable below treeline and high at treeline. We did not observe the alpine. Really good ski quality!!

Cheers,
Neil Warren
ACMG ASG DHG
403-700-4741
www.alpinethreadworks.com
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