Avalanche Forecast
Issued: Mar 4th, 2025 4:00PM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Wind Slabs and Persistent Slabs.
Avalanche Canada,
Avalanche Canada
Fresh wind slabs will form as new snow and wind bury a slippery crust.
Summary
Confidence
Moderate
Avalanche Summary
No recent avalanche activity has been reported since last Saturday.
However, last week a flurry of very large, scary persistent slab avalanche activity was reported at alpine and treeline elevations. These avalanches are becoming less likely, but the consequences of triggering one remain high.
Snowpack Summary
As much as 20 cm of new snow now sits atop a widespread surface crust.
Beneath, 60 to 80 cm of well-settled snow sits over a weak layer of facets and surface hoar buried in mid-February. Recent snowpack tests indicate this layer may be starting to gain strength.
Another weak layer, from late January, is buried 80 to 120 cm deep. This may present as a crust on sunny slopes, sugary facets in most places, and surface hoar in sheltered spots. Large natural, remote, and human-triggered avalanches were reported on this layer last week.
Weather Summary
Tuesday Night
Cloudy with 5 to 15 cm of snow. 10 to 30 km/h southwest ridgetop wind. Treeline temperature -4 °C.
Wednesday
Cloudy with 0 to 5 cm of snow. 0 to 20 km/h southwest ridgetop wind. Treeline temperature -4 °C.
Thursday
Sunny. 20 to 30 km/h northeast ridgetop wind. Treeline temperature -2 °C.
Friday
Mostly sunny. 20 to 40 km/h southwest ridgetop wind. Treeline temperature -2 °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.
- Be mindful that deep instabilities are still present and have produced recent large avalanches.
- A hard crust on the snow surface will help strengthen the snowpack, but may cause tough travel conditions.
Problems
Wind Slabs
New snow along with wind will create fresh wind slabs in exposed terrain.
Aspects: North, North East, East, South East, West, North West.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Persistent Slabs
Buried weak layers were reactive last week. Although their likelihood is decreasing, the consequences of triggering an avalanche on these layers are high.
Aspects: North, North East, East, West, North West.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Valid until: Mar 5th, 2025 4:00PM
