Avalanche Forecast
Issued: Feb 21st, 2025 4:00PM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Storm Slabs and Loose Wet.
Avalanche Canada,
Avalanche Canada
Strong wind, continued precipitation, and warm temperatures creates dangerous avalanche conditions. Natural avalanches are likely, and human triggered avalanches are very likely.
Summary
Confidence
Moderate
Avalanche Summary
Some loose wet natural activity has been reported at lower elevations.
On Thursday, shooting cracks were reported around ridgeline, with the party then retreating out of the terrain.
Snowpack Summary
An average of 20 cm of generally upside-down storm snow has fallen with variable wind, potentially forming wind slab on all aspects. In sheltered terrain this new snow may overlie soft, faceted snow or surface hoar. In exposed terrain it may have been blown down to the underlying crust.
In the Manning park area there has been less new snow and significantly less wind.
At lower elevations, the new snow is wet and heavy.
A crust from December is buried 80 to 140 cm deep, with facets around it in shallow snowpack areas. Otherwise, the lower snowpack is strong and bonded.
Weather Summary
Friday Night
Mainly cloudy with up to 10 mm of mixed precipitation. 30 to 50 km/h southwest ridgetop wind. Freezing level 1800 m.
Saturday
Mainly cloudy with 5 to 20 mm of mixed precipitation. 40 to 60 km/h southwest ridgetop wind. Freezing level rising to 2200 m.
Sunday
Cloudy with up to 40 mm of mixed precipitation. 30 to 50 km/h southwest ridgetop wind. Freezing level 2000 m.
Monday
A mix of sun and clouds, with 15 to 35 mm of precipitation. 40 to 70 km/h southwest ridgetop wind. Freezing level 1800 m.
More details can be found in the Mountain Weather Forecast.
Terrain and Travel Advice
- Be careful as you transition into wind-affected terrain.
- Closely monitor how the new snow is bonding to the old surface.
- The more the snowpack warms up and weakens, the more conservative your terrain selection should be.
Problems
Storm Slabs
Warming temperatures, strong winds, and new snow have built fresh wind slabs. Take extra caution when transitioning into wind affected terrain.
Aspects: All aspects.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Loose Wet
Back off of slopes as temperatures rise and snow surface becomes wet. Watch for signs of warming such as snow shedding off trees and pinwheeling off of steep slopes.
Aspects: All aspects.
Elevations: Treeline, Below Treeline.
Likelihood
Expected Size
Valid until: Feb 22nd, 2025 4:00PM
