Avalanche Forecast
Issued: Apr 25th, 2024 4:00PM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Wind Slabs.
shorton,
Avalanche Canada
Slab avalanches are possible in areas with more than 20 cm of new snow, especially on wind-loaded terrain features.
Summary
Confidence
Avalanche Summary
Recent avalanche activity has primarily been small wet loose avalanches.
Expect wind and storm slab problems to develop over the weekend, especially in areas that received more than 20 cm of new snow.
Snowpack Summary
New snow will gradually accumulate at upper elevations with scattered flurries across the Purcells and South Rockies over the weekend. Freezing levels will fluctuate between 1500 and 2200 m, so there will be a mix of rain and snow at treeline elevations. Slabs are most likely to form in lee alpine terrain.
The upper snowpack is a mix of hard snow and crusts. In terrain above 2000 m, old inactive weak layers may exist in the lower snowpack.
Weather Summary
Thursday Night
Cloudy with 5 to 15 cm of snow above 1500 m. 20 km/h southeast ridgetop wind. Treeline temperature -4 °C. Freezing level 1500 m.
Friday
Cloudy with 5 to 20 cm of snow above 1500 m. 15 km/h southeast ridgetop wind. Treeline temperature -2 °C. Freezing level 1800 m.
Saturday
Mostly cloudy with 1 to 5 cm of snow above 2000 m. 30 km/h south ridgetop wind. Treeline temperature +1 °C. Freezing level 2200 m.
Sunday
Mostly cloudy with 1 to 5 cm of snow above 1800 m. 40 km/h southwest ridgetop wind. Treeline temperature -1 °C. Freezing level 2000 m.
More details can be found in the Mountain Weather Forecast.
Terrain and Travel Advice
- Dial back your terrain choices if you are seeing more than 20 cm of new snow.
- Carefully evaluate steep lines for wind slabs.
- Back off slopes as the surface becomes moist or wet with rising temperatures.
- Be alert to conditions that change with aspect and elevation.
Problems
Wind Slabs
Wind slabs may form in steep alpine terrain and along ridges.
Aspects: North, North East, East, South East, West, North West.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Valid until: Apr 26th, 2024 4:00PM
