Avalanche Forecast
Issued: Mar 11th, 2014 4:37PM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Persistent Slabs and Storm Slabs.
brian webster,
Avalanche Canada
Touchy avalanche conditions continue. Now is the time to avoid all avalanche terrain.
Avalanche control will be conducted on Mt. Stephen and Mt. Dennis on Wednesday. Please no skiing or climbing in these areas.
Summary
Weather Forecast
Another sunny day on Wednesday with freezing levels around 1800 m. Cooler temperatures and some isolated flurries forecast for Thursday and Friday.
Snowpack Summary
85-100cm of storm snow has fallen in the Sunshine, Kootenay and Yoho areas, with 40-60cm around Lake Louise and Bow Summit since Mar 2nd. This storm snow has overloaded the Feb 10th layer of facets, surface hoar and sun crust, and in thinner snowpack areas, the deeper basal facet layer, causing large, destructive avalanches with wide propagations.
Avalanche Summary
A widespread natural avalanche cycle occurred in past 48 hours on all aspects and elevations. Two large remotely skier triggered avalanches were reported yesterday in the Lake Louise area. Natural cycle appears to be over but conditions remain very touchy and reactive to skier triggering.
Confidence
Problems
Persistent Slabs
Natural avalanche cycle is over but conditions are still very touchy and ripe for skier triggering. Any avalanche triggered has the potential to be very large.
- Avoid areas with overhead hazard.
- Avoid all avalanche terrain.
Aspects: All aspects.
Elevations: All elevations.
Likelihood
Expected Size
Storm Slabs
Storm slab is still touchy and has potential to step down to deeper persistent layers.
- Avoid all avalanche terrain.
Aspects: All aspects.
Elevations: All elevations.
Likelihood
Expected Size
Valid until: Mar 12th, 2014 4:00PM
