[MCR] Snow Spider Mt Coast Range

Subject: [MCR] Snow Spider Mt Coast Range
Date: Sat, 26 Jan 2013 09:15:49 -0800
We skied on the N face of Snow Spider yesterday. We saw evidence of 3 seperate 
Na size 1.5-2 on S aspects near 2000m. They appeared to be radiation triggered 
with the recent Hst of 25 cm failing on the SC. Although small the propagation 
was very broad and they ran far, one went close to full path. 
A TP in a sheltered TL location on the N side at 2000m revealed well preserved 
Jan 04 SH up to 10mm down 60cm and producing sudden planar shears in the low 
end of moderate range. Another profile at 2150m in an alpine bowl showed 
decomposing SH 3-5mm and producing SP shears in the upper end of moderate. We 
witnessed no cracking or had ski test results. However this layer is definitely 
a concern in specific locations and could light up with increased load. 
Additionally there was much whumping in the valley bottom on the newest SH 
layer which I observed earlier in the week under Mt Joffre as large as 20mm and 
as high as 1600m. Play safe with additional snow accumulation. 
Tim Pochay
MG
_______________________________________________
These observations and opinions are those of the person who submitted them. The 
ACMG and its members take no responsibility for errors, omissions, or lapses in 
continuity. Conditions differ greatly over time and space due to the variable 
nature of mountain weather and terrain. Application of this information 
provides no guarantee of increased safety. Do not use the Mountain Conditions 
Report as the sole factor in planning trips or making decisions in the field.
See http://acmg.ca/mcr for more information.
See http://informalex.org/subscribe.shtml#unsubscribe to remove your name from 
this list.