Avalanche Forecast
Issued: Mar 3rd, 2024 4:00PM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Persistent Slabs and Wind Slabs.
trettie,
Avalanche Canada
Dangerous Avalanche Conditions!
Continue to choose conservative, low consequence terrain and beware of overhead and adjacent slopes. Remote triggering is a concern.
Summary
Confidence
Avalanche Summary
Human and naturally triggered avalanche activity continues throughout the region with avalanches ranging in size from 2 to 4. Some avalanches have run full path to valley bottom. Many human triggered avalanches have been remotely triggered and also resulted in sympathetics.
We expect human triggered avalanche activity to continue.
Snowpack Summary
The wind has come from a variety of directions, wind effect could be found on all exposed terrain at higher elevations. A new crust could be found on south and west facing slopes as well as all aspects at low elevations..
50 to 110 cm overlies a layer of surface hoar in wind-sheltered terrain, weak facets, or a hard melt-freeze crust on south and west-facing slopes.
A thick and hard widespread crust that formed in early February is buried about 70 to 140 cm deep and extends up to 2400 m. This crust may have a layer of facets above it. The snowpack below this crust is generally not concerning except in shallow alpine terrain.
Weather Summary
Sunday Night
Mostly cloudy with around 5 cm of new snow. 10 to 30 km/h south alpine wind. Treeline temperature -11°C.
Monday
Mostly cloudy with around 5 cm of new snow. 10 to 25 km/h southwest to west alpine wind. Treeline temperature -10°C.
Tuesday
Clearing skies throughout the day with up to 5 cm of new snow. 20 to 40 km/h west alpine wind. Treeline temperature -11°C.
Wednesday
Sunny. 5 to 20 km/h northwest alpine wind. Treeline temperature -10°C.
More details can be found in the Mountain Weather Forecast.
Terrain and Travel Advice
- Conservative terrain selection is critical, choose only well supported, low consequence lines.
- Remote triggering is a concern, watch out for adjacent and overhead slopes.
- Be aware of the potential for surprisingly large avalanches due to deeply buried weak layers.
- If triggered, wind slabs avalanches may step down to deeper layers resulting in larger avalanches.
- Recent wind has varied in direction so watch for wind slabs on all aspects.
Problems
Persistent Slabs
A weak layer of faceted grains above a crust buried 70 to 140 cm deep is a recipe for large, high-consequence avalanches. Remote triggering is an ongoing concern.
Avalanches triggered on this layer could run full path.
Aspects: All aspects.
Elevations: All elevations.
Likelihood
Expected Size
Wind Slabs
Wind slab could be found on all exposed slopes at treeline and above.
Aspects: All aspects.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Valid until: Mar 4th, 2024 4:00PM
