Avalanche Forecast
Issued: Dec 24th, 2011 9:46AM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Wind Slabs and Storm Slabs.
jlammers,
Avalanche Canada
Summary
Confidence
Fair - Intensity of incoming weather is uncertain
Weather Forecast
Sunday: 13cm of new snow - moderate southwest winds - alpine temperatures of -8.0Monday: 15cm of new snow - moderate to strong southwest winds - alpine temperatures of -9.0Tuesday: 30cm of new snow - moderate southwest winds - alpine temperatures at -7.0
Avalanche Summary
Multiple size 1 and 1.5 slab avalanches were observed on lee aspects at treeline and in the alpine on saturday. Conditions have been described as touchy with the new snow and wind.
Snowpack Summary
The region received 20cm of new snow on friday night and throughout saturday. Alpine winds were moderate to strong from the southwest during this period. Touchy windslabs up to 50cm deep now exist on lee aspects.Below this new snow a weak rain crust exists up to treeline. This crust may over-ride buried surface hoar and/or facets may persist 10-20cm below. Watch this layer as it gets more load and a thick cohesive slab develops, particularly below treeline where the buried surface hoar would be especially large. A strong mid pack overlies basal facets that have also gained considerable strength.Snow depths are at approximately 140cm at treeline in the Spearhead area and 180cm at treeline in the Branywine area.
Problems
Wind Slabs
Aspects: North, North East, East, South East.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Storm Slabs
Aspects: All aspects.
Elevations: All elevations.
Likelihood
Expected Size
Valid until: Dec 26th, 2011 8:00AM
