Avalanche Forecast
Issued: Apr 20th, 2024 4:00PM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Wind Slabs.
wlewis,
Avalanche Canada
Watch for signs of instability as you travel - new snow may not bond well with the crust below.
Summary
Confidence
Avalanche Summary
Recent sunshine and warm temperatures triggered wet loose avalanches and cornice falls over the last few days. With storm snow and wind forecast, potential increases for storm slab avalanches to occur on Sunday.
Snowpack Summary
By Sunday afternoon around 10 cm of storm snow may have fallen, overlying a widespread crust. The bond between old and new snow may be poor, creating reactive conditions. Deeper and more reactive deposits are expected near ridglines, on north and east facing slopes.
Below treeline terrain has low snow cover, this storm snow will not change that. Travel conditions are challenging with exposed (or barely hidden) rocks, stumps, and open creeks.
Weather Summary
Saturday
Cloudy with rain turning to snow, around 8 cm possible. Freezing levels drop to 1200 m by morning. 40-50 km/h southwest winds.
Sunday
Cloudy with another 3 cm of snow possible in the morning 20-40 km/h southwesterly winds. Freezing levels around 1500 m, treeline temperatures around -2 °C.
Monday
Mostly clear skies with 10 km/h east winds. Freezing levels rise to 2000 m. Treeline temperatures of +1 °C.
Tuesday
A mix of sun and cloud with 10-20 km/h southwest winds. Freezing levels rise to 2000 m. Treeline temperatures of +1 °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.
- Keep in mind the crust offers an excellent bed surface for avalanches.
- When a thick, melt-freeze surface crust is present, avalanche activity is unlikely.
Problems
Wind Slabs
Wind slabs may be poorly bonded to the crust below. Approach ridgelines with caution.
Aspects: North, North East, East, South East, North West.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Valid until: Apr 21st, 2024 4:00PM
