Avalanche Forecast
Issued: Feb 18th, 2025 4:00PM
The alpine rating is Loose Dry.
, the treeline rating is , and the below treeline rating is Known problems includeLow danger doesn't mean no danger. Even a small avalanche above a terrain trap can have a high consequence.
Summary
Confidence
High
Avalanche Summary
On Monday there were numerous reports of small (size 1 to 1.5) natural and skier triggered dry loose avalanche avalanches running in steep terrain in the alpine and treeline. There was also a report of a skier triggered size 1 persistent slab avalanche failing at treeline.
There was a fatal avalanche incident outside of our forecast region on the east side of the Columbia valley in the Rocky Mountain range near Kapristo Mountain . Click here to see more details.
Snowpack Summary
5 to 10 cm of recent snow from late last week snow may be covering a layer of surface hoar in sheltered areas, or a hard sun-crust on sunny slopes.
A weak layer from late January is buried 20 to 40 cm deep. This layer consists of a crust on sun-exposed slopes, and facets and/or surface hoar on other aspects.
A weak layer of facets from early December is buried 60 to 120 cm. The base of the snowpack consists of a thick crust with facets or depth hoar in many areas.
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Weather Summary
Tuesday Night
Clear sky. 10 to 20 km/h south ridgetop wind. Treeline temperature -14 °C.
Wednesday
Mix of sun and clouds. 10 to 20 km/h south ridgetop wind. Treeline temperature -11 °C.
Thursday
Mostly cloudy with isolated flurries. 10 to 25 km/h west ridgetop wind. Treeline temperature -4 °C.
Friday
Mostly cloudy with scattered flurries. 15 to 30 km/h southwest ridgetop wind. Treeline temperature -2 °C.
More details can be found in the Mountain Weather Forecast.
Terrain and Travel Advice
- Use caution above cliffs and terrain traps where even small avalanches may have severe consequences.
- Be aware of the potential for loose avalanches in steep terrain where snow hasn't formed a slab.
Problems
Loose Dry
Dry loose avalanches are possible in steep terrain where the snow is powdery and unconsolidated.
Aspects: All aspects.
Elevations: All elevations.
Likelihood
Expected Size
Valid until: Feb 19th, 2025 4:00PM