Avalanche Forecast
Issued: Mar 3rd, 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
Use caution near wind-effected slopes at ridgecrest where triggering an avalanche is most likely.
Summary
Confidence
Moderate
Avalanche Summary
On Sunday, several avalanches (size 2) were reported in the Three Guardsman area of Haines Summit.
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
Monday Night
Cloudy. 20 to 40 km/h south ridgetop wind. Treeline temperature -5 °C.
Tuesday
Mix of sun and clouds. 10 to 20 km/h south ridgetop wind. Treeline temperature -6 °C..
Wednesday
A mix of sun and cloud. 15 to 30 km/h southwest ridgetop wind. Treeline temperature -2 °C.
Thursday
Cloud. 1-3cm of snow. 20 to 40 km/h southwest 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, West, North West.
Elevations: Alpine.
Likelihood
Expected Size
Valid until: Mar 4th, 2025 4:00PM
