Avalanche Forecast
Issued: Mar 7th, 2023 4:00PM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Wind Slabs and Cornices.
jsmith,
Avalanche Canada
***UPDATED***
Greater than expected snowfall at Tetrahedron provincial park, hazard may be considerable in this area with reactive storm slabs.
Lingering wind slabs may remain reactive to human triggers on a variety of aspects at treeline and above.
Avoid travelling on slopes below cornices.
Summary
Confidence
Avalanche Summary
No new avalanches were reported in this region on Monday.
Check out a recent North Shore Snowpack Update for a visual description of what the snowpack may look like in this region.
Snowpack Summary
Cornices are large and may fail with daytime heating.
Sun crust on sunny aspects. 100-130 cm of snow last week and shifting strong winds formed wind slabs on a variety of aspects at treeline and above. These slabs are sitting on either hard surfaces and/or small facets.
The mid and lower snowpack is well-settled, strong, and consolidated.
Weather Summary
Tuesday Night
Mostly clear skies / Light south ridgetop wind / Low temperature at treeline 0 C / Freezing level 700 m.
Wednesday
Mix of sun and cloud / Light southeast ridgetop wind / High temperature at treeline 5 C / Freezing level 1100 m.
Thursday
Mostly sunny / Moderate southeast ridgetop wind / High temperature at treeline 6 C / Freezing level 1200 m.
Friday
Cloudy with flurries; 3-5 cm / Light south ridgetop wind / High temperature at treeline 2 C / Freezing level 600 m.
More details can be found in the Mountain Weather Forecast.
Terrain and Travel Advice
- Be especially cautious as you transition into wind affected terrain.
- Recent wind has varied in direction so watch for wind slabs on all aspects.
- Avoid travelling on slopes below cornices.
- Be alert to conditions that change with elevation and sun exposure.
Problems
Wind Slabs
Wind slabs may remain reactive on a variety of aspects at treeline and above.
Aspects: All aspects.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Cornices
Cornices are large and may fail with daytime heating. Cornice failures act as heavy triggers and can trigger large avalanches on slopes that a single rider would not trigger.
Aspects: North, North East, East, South East, North West.
Elevations: Alpine.
Likelihood
Expected Size
Valid until: Mar 8th, 2023 4:00PM
