Avalanche Forecast
Issued: Apr 21st, 2024 4:00PM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Loose Wet and Wind Slabs.
wlewis,
Avalanche Canada
Watch for reactivity within the wind affected pockets of storm snow, especially where it overlies the crust.
Minimize your exposure to sun affected slopes, including overhead hazard.
Summary
Confidence
Moderate
Avalanche Summary
No new avalanches have been reported. We expect small slabs may have occurred on Sunday with the fresh snow and strong winds - reactivity may linger in wind-affected features. With full sun on Monday, wet loose avalanches are possible on steep, south-facing slopes within the new snow.
If you have any recent photos or observations, please submit them to the Mountain Information Network, observations are limited in the spring.
Snowpack Summary
Storm snow of 5-20 cm can be found, redistributed into wind affected deposits on north and east facing slopes near ridgeline. This recent snow sits over a widespread crust. Strong sunshine on Monday is expected to create moist surface snow on south facing slopes.
Below treeline terrain is snow free or has very low snow cover. Travel conditions are challenging with exposed rocks, stumps, and open creeks.
Weather Summary
Sunday Night
Mostly clear skies with 20-30 km/h northwest winds. Flurries end in the early evening. Freezing levels remain steady around 1200 m.
Monday
Clear skies. 20-30 km/h easterly winds. Freezing levels rise to 2000 m. Treeline temperatures reach +7 °C.
Tuesday
A mix of sun and cloud with 30 km/h southwest wind. Freezing levels steady around 2000 m. Treeline temperatures around +7 °C.
Wednesday
A mix of sun and cloud with 20-30 km/h southwest wind. Freezing levels drop to 1500 m. Treeline temperatures around +3 °C.
More details can be found in the Mountain Weather Forecast.
Terrain and Travel Advice
- Avoid sun exposed slopes when the solar radiation is strong, especially if snow is moist or wet
- A moist or wet snow surface, pinwheeling and natural avalanches are all indicators of a weakening snowpack.
- Keep in mind the crust offers an excellent bed surface for avalanches.
- Be especially cautious as you transition into wind affected terrain.
Problems
Loose Wet
Wet loose avalanches are most likely on sun affected slopes, in the afternoon as temperatures rise.
Aspects: South East, South, South West, West.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Wind Slabs
Approach ridgelines with caution, until the new snow has had time to bond. Rising temperatures and sun will increase reactivity.
Aspects: All aspects.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Valid until: Apr 22nd, 2024 4:00PM
