Avalanche Forecast
Issued: Dec 30th, 2024 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
Head to sheltered terrain for the best riding conditions, wind slabs remain reactive to riders.
Monitor surface conditions as you gain elevation and move into wind affected terrain.
Summary
Confidence
Moderate
Avalanche Summary
Wind affected snow continues to be reactive to rider traffic. Recent avalanches reported have not involved the crust buried up to 100 cm deep.
Slab avalanches were triggered in the alpine on north facing slopes on Sunday, with wide propagation in steep ridgeline features. See photos below and it's worth checking out this great MIN report from Matier on Sunday for full details and more photos. Thanks for sharing.
Snowpack Summary
Wind affected snow sits above a crust which is found up to 1900 m.
Another crust is buried 60 to 100 cm deep, and in sheltered terrain a layer of surface hoar may exist just above it. There is uncertainty over its reactivity. It is more likely to be a concern in wind affected, thin and rocky start zones at higher elevations.
Snow depths at treeline vary between 90 to 160 cm.
Weather Summary
Monday NightMostly clear skies. 10 to 20 km/h southwest ridgetop wind. Treeline temperature -10 °C.
Tuesday
A mix of sun and cloud. 20 km/h southwest ridgetop wind. Treeline temperature -8 °C.
Wednesday
Mostly clear skies. 10 to 20 km/h west ridgetop wind. Treeline temperature -8 °C.
Thursday
A mix of sun and cloud. 20 to 40 km/h west ridgetop wind. Treeline temperature -6 °C.
More details can be found in the Mountain Weather Forecast.
Terrain and Travel Advice
- Seek out sheltered terrain where new snow hasn't been affected by wind.
- Avoid steep, rocky, and wind-affected areas where triggering slabs is more likely.
- If triggered, wind slabs avalanches may step down to deeper layers resulting in larger avalanches.
Problems
Wind Slabs
Reactivity is expected to continue on convex rolls, near ridgelines and on cross loaded slopes.
Wind slabs could step down to buried crusts, most likely to be triggered by large loads at or above 1900 m.
Aspects: North, North East, East, West, North West.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Valid until: Dec 31st, 2024 4:00PM
