Avalanche Forecast
Issued: Dec 19th, 2024 4:00PM
The alpine rating is Wind Slabs.
, the treeline rating is , and the below treeline rating is Known problems includeGusty winds are redistributing any loose snow. Be mindful that strong winds can form slabs lower in terrain than expected.
Summary
Confidence
Moderate
Avalanche Summary
Early observations Thursday reported rapid wind slab development throughout the day, including reports of a few size 1-2 natural and rider-triggered avalanches, and skiers seeing shooting cracks at treeline and below (MIN).
On Wednesday, small size 1 wind slabs were reactive to skiers. Reports place these slabs in wind-loaded features, open treeline areas and higher.
Snowpack Summary
15 to 30 cm of wind-affected snow rests on a thick rain crust. In some areas surface hoar and/or facets are buried below this surface snow, 10 to 40 cm deep. Recent strong winds have varied in direction, building stubborn wind slabs on all aspects at upper elevations.
Treeline snow depth range from 200-280 cm. The lower snowpack has no layers of concern.
Weather Summary
Thursday night
Cloudy with flurries, trace to 10 cm of snow. 20 to 40 southeast ridgetop wind. Treeline temperature -4 °C.
Friday
Cloudy with isolated flurries, trace to 5 cm. 30 to 60 km/h east ridgetop wind. Treeline temperature -4 °C.
Saturday
Cloudy and unsettled. 40 to 60 km/h southeast ridgetop wind. Treeline temperature -5 °C.
Sunday
Cloudy with isolated flurries, trace to 10 cm. 40 to 70 km/h southeast ridgetop wind. Treeline temperature -4 °C.
More details can be found in the Mountain Weather Forecast.
Terrain and Travel Advice
- Seek out wind sheltered terrain below treeline where you can avoid wind slabs and find great riding.
- Avoid freshly wind-loaded features, especially near ridge crests, rollovers, and in steep terrain.
- Small avalanches can have serious consequences in extreme terrain. Carefully evaluate your line for slabs before you commit to it.
Problems
Wind Slabs
Gusty winds are impacting any loose snow, variable winds may have reverse-loaded features. Watch for reactive deposits around ridges or lee features.
Aspects: North, North East, East, South West, West, North West.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Valid until: Dec 20th, 2024 4:00PM