[MCR] Recent Large Avalanches in the Rockies

Public Mountain Conditions Report mcr at informalex.org
Sun Apr 1 18:27:33 EDT 2012


Approximately 50 cm of recent storm snow has fallen in the last few days,
which has resulted in several large and destructive avalanches in the Lake
Louise area. These have initiated on the storm snow, Valentines surface
hoar and basal facet interfaces depending on their location. Of
particular note are two events that occurred in the last 24h (see
pictures):

NE aspect of Cathedral peak which most likely involved the storm snow
interface.
N aspect in skiiable terrain on the Popes peak tour and likely stepped
down to the Valentines surface hoar.



In addition, there was another close call with an avalanche that failed on
the basal facets in West Bowl in the Lake Louise Backcountry yesterday
afternoon, and Parks Canada was called out to search the debris.

It seems all of this recent snow is awakening some older weak layers that
have been lying dormant for a while.

Ian Jackson
ACMG Apprentice Ski/ Alpine Guide
Visitor Safety Technician
Banff, Yoho, Kootenay National Parks
www.parksmountainsafety.ca
www.parcsecuritemontagne.ca
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