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 Storm Slabs.
wlewis,
Avalanche Canada
Watch for signs of instability as you travel - new snow may not bond well with the crust below.
Summary
Confidence
Moderate
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 20 cm of storm snow may have fallen, overlying a widespread crust except on high north facing slopes. The bond between old and new snow may be poor, creating reactive conditions. Deeper and more reactive deposits can likely be found 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 Night
Cloudy with rain turning to snow, up to 15 cm possible. Freezing levels drop to 1000 m by morning. 40-50 km/h southwest winds.
Sunday
Cloudy with another 5 cm of snow possible in the morning. 20-40 km/h southwesterly winds. Freezing levels around 1300 m, treeline temperatures around -4 °C.
Monday
Mostly clear skies with 10 km/h east winds. Freezing levels rise to 1800 m. 10-20 km/h southeast winds. Treeline temperatures around -1 °C.
Tuesday
A mix of sun and cloud. Freezing levels remain around 1800 m. 20-30 km/h southwest winds. Treeline temperatures around -1 °C.
More details can be found in the Mountain Weather Forecast.
Terrain and Travel Advice
- Continue to make conservative terrain choices while the storm snow settles and stabilizes.
- Keep in mind the crust offers an excellent bed surface for avalanches.
- Avoid freshly wind loaded terrain features.
Problems
Storm Slabs
Storm snow may slide easily on the crust below. Avoid steep or consequential features until the new snow has had time to bond. Greatest reactivity is expected in wind affected features.
Aspects: All aspects.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Valid until: Apr 21st, 2024 4:00PM
