Avalanche Forecast
Issued: Feb 10th, 2025 4:00PM
The alpine rating is Persistent Slabs.
, the treeline rating is , and the below treeline rating is Known problems includeContinuously assess conditions as you move through terrain
Avalanches are possible where the upper snowpack feels "slabby"
Summary
Confidence
Moderate
Avalanche Summary
Over the past couple days several size 1 wind and persistent slab avalanches have been reported. These avalanches released on the surface hoar layer from late January and were on a variety of aspects at treeline. Triggers included explosives, ski cuts and skier accidental.
Snowpack Summary
Exposed terrain in the alpine and treeline is variably wind-affected. In sheltered terrain a layer of surface hoar or a sun crust can be found on or just below the surface.
20 to 60 cm of faceted snow overlies a weak layer from late January. This layer consists of a crust on sun exposed slopes and a layer of surface hoar on all other aspects.
Check out this MIN report from the eastern side of this region.
The mid and lower snowpack is generally well settled.
Weather Summary
Monday Night
Clear skies. 10 to 20 km/h northwest ridgetop wind. Treeline temperature -20 °C.
Tuesday
Sunny. 10 to 20 km/h northwest ridgetop wind. Treeline temperature -17 °C.
Wednesday
Sunny. 10 to 30 km/h west ridgetop wind. Treeline temperature -16 °C.
Thursday
Sunny. 10 to 20 km/h south ridgetop wind. Treeline temperature -5 °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
- Be aware of the potential for remote triggering and large avalanches due to buried surface hoar.
- Be aware of the potential for loose avalanches in steep terrain where snow hasn't formed a slab.
- Be careful as you transition into wind-affected terrain.
Problems
Persistent Slabs
A layer of surface hoar 20 to 60 cm deep buried at the end of January has been reactive where a slab exists above it.
Aspects: All aspects.
Elevations: All elevations.
Likelihood
Expected Size
Valid until: Feb 11th, 2025 4:00PM