Avalanche Forecast
Issued: Mar 11th, 2025 4:00PM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Storm Slabs.
Avalanche Canada,
Avalanche Canada
15 to 30 cm of new snow and strong southwest wind will build touchy storm slabs. Avoid lee slopes at ridgeline.
Stick with a conservative trip plan and watch for signs of instability.
Summary
Confidence
Moderate
Avalanche Summary
No recent reports by Tuesday afternoon.
On Monday, explosive control produced one storm slab (size 1.5), and the AvCan field team observed one size 2 storm slab that they suspect was remotely triggered by a snowmobile.
New snow and strong to extreme southwest wind may form touchy storm and wind slabs on Wednesday.
Snowpack Summary
New snow accompanied by strong to extreme southwest wind will likely form fresh wind slabs at upper elevations on Wednesday.
This brings 80 to 120 cm (deeper totals in leeward terrain) of recent storm snow, which sits above a crust and a mix of facets and surface hoar that formed earlier this month. The mid and lower snowpack is strong and dense with depths of near 400 cm at treeline elevations.
Weather Summary
Tuesday Night
Cloudy with 10 to 25 cm of snow with higher amount on the west side of the island. 60 to 80 km/h southwest ridgetop wind. Treeline temperature -4 °C. Freezing level 500 m.
Wednesday
Cloudy with up to 5 to 10 cm of snow. 20 to 40 km/h southeast ridgetop wind. Treeline temperature -2 °C. Freezing level 800 m.
Thursday
Mix of sun and cloud. 20 to 30 km/h southwest ridgetop wind. Treeline temperature -2 °C. Freezing level 900 m.
Friday
Cloudy with 5 to 10 cm of snow. 10 km/h southwest ridgetop wind. Treeline temperature -4 °C. Freezing level 700 m.
More details can be found in the Mountain Weather Forecast.
Terrain and Travel Advice
- Avoid freshly wind-loaded terrain features.
- Look for signs of instability: whumphing, hollow sounds, shooting cracks, and recent avalanches.
- Seek out sheltered terrain where new snow hasn't been affected by wind.
Problems
Storm Slabs
Touchy storm slabs are likely on Wednesday. Back off if you encounter signs of instability like whumpfing, shooting cracks or recent avalanches.
Dry loose sluffing is likely in steep terrain features.
Aspects: All aspects.
Elevations: All elevations.
Likelihood
Expected Size
Valid until: Mar 12th, 2025 4:00PM
