Avalanche Forecast
Regions: Coquihalla, Manning, Skagit.
Wind slabs may remain reactive human triggers
Approach ridgelines and convex rolls with caution.
Confidence
Moderate
Avalanche Summary
Last reported avalanche activity is limited to natural glide slab avalanches, that are typical of the steep, smooth rock slabs in the Coquihalla.
While nearly a week ago, on Wednesday an avalanche was triggered on a rocky north face slope (see photo below). Reactivity may continue in wind loaded ridgeline features like this.
Observations have been limited in this region. Please share any observations or photos to the Mountain Information Network (MIN).
Snowpack Summary
Up to 60 cm of wind affected snow sits above hard crust. The mid and lower snowpack are well consolidated with no deeper concerns.
Snow depth ranges from 100 to 150 cm at treeline in the Coquihalla, to 85 to 100 cm near Manning Park.
Check out this MIN for recent conditions in Manning.
Weather Summary
Sunday Night
Cloudy with up to 10 cm of snow. 30 to 40 km/h southwest ridgetop wind. Treeline temperature -5 °C.
Monday
Cloudy with flurries. 30 to 40 km/h southwest ridgetop wind. Treeline temperature -3 °C.
Tuesday
Mostly clear skies. 10 to 20 km/h southwest ridgetop wind. Treeline temperature -3 °C.
Wednesday
A mix of sun and cloud. 10 km/h southwest ridgetop wind. Treeline temperature -3 °C.
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.
- Seek out sheltered terrain where new snow hasn't been affected by wind.
Avalanche Problems
Wind Slabs
Reactivity may continue on convex rolls, near ridgelines and on cross loaded slopes. Storm snow sits over a crust, which may increase reactivity.
Aspects: North, North East, East, West, North West.
Elevations: Alpine, Treeline.
Likelihood: Possible
Expected Size: 1 - 2