Avalanche Forecast
Issued: Mar 2nd, 2025 4:00PM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Wind Slabs.
Avalanche Canada,
Avalanche Canada
Wind slabs are expected to remain sensitive to human triggering. Use extra caution in wind-exposed terrain.
Summary
Confidence
Moderate
Avalanche Summary
On Saturday, several wind slab avalanches (size 1.5) and a storm slab avalanche (size 2.5) were reported in the Big Kahuna area.
Snowpack Summary
30 cm of snow from last week's storm is being redistributed by strong southerly wind. The new snow is building deep drifts of wind-deposited snow on lee and cross-loaded slopes, forming fresh wind slabs. These sit over firm, wind-affected surfaces in exposed areas, faceted snow in sheltered terrain, and a crust on steep solar aspects. A poor bond to these interfaces may exist.
A weak layer of facets and a crust from early December is buried 60 to 150 cm deep. This layer exists on all aspects up to 1750 m. This layer has not been active in producing avalanches or test results in several weeks and is generally not a concern at this time.
At the highway elevation, the snow depth is 120 cm, and in the alpine exceeds 200 cm.
Weather Summary
Sunday Night
Cloudy. 20 to 40 km/h south ridgetop wind. Treeline temperature -5 °C.
Monday
Mix of sun and clouds. 10 to 20 km/h south ridgetop wind. Treeline temperature -6 °C..
Tuesday
A mix of sun and cloud. 15 to 30 km/h southwest ridgetop wind. Treeline temperature -2 °C.
Wednesday
A mix of sun and cloud. 10 to 25 km/h southeast ridgetop wind. Treeline temperature -4 °C.
More details can be found in the Mountain Weather Forecast.
Terrain and Travel Advice
- Watch for newly formed and reactive wind slabs as you transition into wind-affected terrain.
- Watch for signs of instability like whumpfing, hollow sounds, shooting cracks, or recent avalanches.
- Be alert to conditions that change with elevation, aspect, and exposure to wind.
Problems
Wind Slabs
Human-triggered wind slabs remain possible. These wind slabs may sit over a weak interface in some areas, which may keep them reactive for longer than normal.
Aspects: North, North East, East, South East, North West.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Valid until: Mar 3rd, 2025 4:00PM
