Avalanche Forecast
Issued: Apr 1st, 2024 4:00PM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Storm Slabs, Persistent Slabs and Loose Wet.
jsmith,
Avalanche Canada
Rapidly rising freezing levels are expected to increase the likelihood of triggering large avalanches.
Choose conservative terrain and avoid overhead hazards.
Summary
Confidence
Avalanche Summary
Numerous natural and rider triggered wet loose avalanches to size 1.5 were reported on sunny aspects on Sunday.
Data is limited in this region. Please consider posting your observations to the Mountain Information Network.
Snowpack Summary
Strong solar radiation has formed a surface crust everywhere except north facing terrian at upper elevations.
30-40 cm of snow overlies a crust on all but north facing aspects in the alpine.
A persistent weak layer of facets are sitting on top of a second buried crust down 100 to 180 cm. This layer is unlikely to human trigger in areas where a thick crust below the recent snow is present. However, steep or convex terrain features with a shallow or thin to thick snowpack at treeline and above are the most likely places where it may be possible to trigger this layer with large loads.
Weather Summary
Monday Night
Clear skies. 30 to 40 km/h west ridgetop wind. Treeline temperature 3° C. Freezing level 2500 m.
Tuesday
Sunny. 50 to 60 km/h southwest ridgetop wind. Treeline temperature 6° C. Freezing level 2800 m.
Wednesday
Mix of sun and cloud with isolated flurries, 0 to 5 cm snow. 40 to 50 km/h southwest ridgetop wind. Treeline temperature -1° C. Freezing level 1900 m.
Thursday
Cloudy with isolated flurries, 0 to 3 cm snow. 30 to 40 km/h east ridgetop wind. Treeline temperature -4° C. Freezing level 1600 m.
Check out the Mountain Weather Forecast for additional weather information.
More details can be found in the Mountain Weather Forecast.
Terrain and Travel Advice
- The more the snowpack warms-up and weakens, the more conservative you`ll want to be with your terrain selection.
- Look for signs of instability: whumphing, hollow sounds, shooting cracks, and recent avalanches.
- If triggered loose wet avalanches may step down to deeper layers resulting in larger avalanches.
- Cornice failure may trigger large avalanches.
Problems
Storm Slabs
Storm slabs are most likely to remain reactive at treeline and above. They have been failing just above a crust down 30 to 50 cm.
Aspects: All aspects.
Elevations: All elevations.
Likelihood
Expected Size
Persistent Slabs
Rapid warming increases the likelihood of triggering very large avalanches on deeply buried weak layers.
Aspects: All aspects.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Loose Wet
Expect the high freezing levels to trigger wet loose avalanches on all aspects and elevations.
Aspects: All aspects.
Elevations: All elevations.
Likelihood
Expected Size
Valid until: Apr 2nd, 2024 4:00PM
