Avalanche Forecast
Issued: Mar 25th, 2024 4:00PM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Wind Slabs and Persistent Slabs.
trettie,
Avalanche Canada
Use Extra caution as you venture into wind effected terrain.
Recent storm snow may not have bonded yet to the underlying surface.
Summary
Confidence
Moderate
Avalanche Summary
A few rider triggered size 1 dry loose avalanches and storm slabs were reported on all aspects at treeline and above over the past couple days.
Snowpack Summary
15 to 25 cm of recent snow may still be available for wind transport. This snow overlies predominantly crusty surfaces, except for northerly aspects at upper elevations. The snow surface will become moist at lower elevations as the freezing level rises.
A weak layer of surface hoar is down 30-60 cm in isolated, sheltered areas at treeline.
A widespread crust with sugary facets above is buried 80-180 cm deep. Steep or convex terrain features with a shallow or thin to thick snowpack at treeline and above are the most likely places to trigger this layer. However, when a thick surface crust is present, human triggering this layer is unlikely.
Weather Summary
Monday Night
Mostly cloudy with around 5 cm of new snow. 15 to 30 km/h west alpine wind. Treeline temperature -4°C.
Tuesday
Mostly cloudy with up to 5 cm of new snow. 15 to 30 km/h west alpine wind. Freezing level rising to 1800 m.
Wednesday
A mix of sun and cloud with trace amounts of new snow. 20 to 40 km/h southwest alpine wind. Freezing level rising to 1600 m.
Thursday
Cloudy with up to 15 cm of new snow. 20 to 40 km/h southwest alpine wind. Freezing level rising to 1600 m.
More details can be found in the Mountain Weather Forecast.
Terrain and Travel Advice
- Use small low consequence slopes to test the bond of the new snow.
- Avoid steep, rocky, and wind effected areas where triggering slabs is more likely.
- Recent wind has varied in direction so watch for wind slabs on all aspects.
- Cornice failure may trigger large avalanches.
- Back off slopes as the surface becomes moist or wet with rising temperatures.
Problems
Wind Slabs
Wind has come from a variety of directions. Wind slab could be found on all aspects.
Aspects: All aspects.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Persistent Slabs
A crust with weak facets above is buried 80 to 180 cm deep. Steep or convex terrain features with a shallow or thin to thick snowpack at treeline and above are the most likely places to trigger this layer.
Aspects: All aspects.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Valid until: Mar 26th, 2024 4:00PM
