Avalanche Forecast
Issued: Feb 4th, 2025 4:00PM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Wind Slabs, Persistent Slabs and Deep Persistent Slabs.
Avalanche Canada,
Avalanche Canada
It could be challenging to find riding that is both low risk and fun…
The persistent slab problem is concerning in sheltered terrain and exposed terrain is scoured or has wind slab present
Summary
Confidence
Moderate
Avalanche Summary
Natural wind slab avalanches up to size 2.5 continue to be reported in the region. These avalanches have been on south and west aspects at treeline and above.
Deep persistent slab avalanches continue to be reported as well. These avalanches are up to size 4 and typically being triggered in the.
Snowpack Summary
Moderate to strong northeast outflow wind continues to scour windward terrain and load leeward slopes at all elevations. In sheltered terrain 30 to 60 cm of snow overlies a surface hoar layer from late January.
Another layer of surface hoar was buried near the middle of January and can be found 50 to 100 cm deep.
Weak layers from December are 150 to 300 cm deep. These include crusts, facets, and/or surface hoar, and continue to produce large avalanches.
Weather Summary
Tuesday Night
Clear skies. 30 to 50 km/h north ridgetop wind. Treeline temperature -16 °C, potential for temperature inversion with warmer temperatures in the alpine.
Wednesday
Mostly sunny. 15 to 30 km/h north ridgetop wind. Treeline temperature -11 °C.
Thursday
Mostly sunny. 10 to 20 km/h north ridgetop wind. Treeline temperature -16 °C, potential for temperature inversion with warmer temperatures in the alpine.
Friday
Sunny. 10 to 20 km/h north ridgetop wind. Treeline temperature -16 °C, potential for temperature inversion with warmer temperatures in the alpine.
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.
- Make conservative terrain choices and avoid overhead hazard.
- Avoid shallow, rocky areas where the snowpack transitions from thick to thin.
- Be aware of the potential for large avalanches due to buried weak layers.
Problems
Wind Slabs
Strong outflow (northeast) wind is continuing to actively build wind slabs on south and west aspects.
Aspects: South, South West, West, North West.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Persistent Slabs
Up to 1 m overlies a crust and surface hoar layer from mid January. This layer is likely still rider triggerable.
Aspects: All aspects.
Elevations: Treeline, Below Treeline.
Likelihood
Expected Size
Deep Persistent Slabs
The 150 to 250 cm deep weak layer from early December continues to produce large avalanches.
Aspects: All aspects.
Elevations: Alpine.
Likelihood
Expected Size
Valid until: Feb 5th, 2025 4:00PM
