Avalanche Forecast
Issued: Mar 25th, 2023 4:00PM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Deep Persistent Slabs.
trettie,
Avalanche Canada
Continue to practice good group management, High mark or ski steep terrain one at a time and minimize time below cornices.
Summary
Confidence
Avalanche Summary
No significant avalanches were reported in the past couple days.
Snowpack Summary
Up to 15 cm of new snow sits over a crust on solar aspects and all aspects below 1500 m. On high north facing terrain this new snow sits over facets and surface hoar. If the wind picks up new wind slabs are likely to form.
Check out this MIN from our field team.
The mid-snowpack is generally strong but the lower snowpack is a different story..The November facets are still prominent at the base of the snowpack. They are showing signs of improving but this layer remains a significant concern in rocky, shallow, or thin to thick snowpack areas at treeline and above.
Weather Summary
Saturday Night
Mostly clear skies with the possibility of flurries bringing a few cm of new snow. Light westerly winds and a low of -11°C at 1800 m.
Sunday
A mix of sun and cloud with the possibility of convective flurries bringing up to 5 cm of new snow. Light northwest winds and a high of -2°C at 1800 m.
Monday
Mostly clear with no new snow expected. Light northwest winds and a high of -4°C at 1800 m.
Tuesday
Clear skies with no new snow expected. Light northwest winds and a high of -2°C at 1800 m.
More details can be found in the Mountain Weather Forecast.
Terrain and Travel Advice
- Avoid sun exposed slopes when the solar radiation is strong, especially if snow is moist or wet
- In areas where deep persistent slabs may exist, avoid shallow or variable depth snowpacks and unsupported terrain features.
- Minimize your exposure time below cornices.
- Watch for newly formed and reactive wind slabs as you transition into wind affected terrain.
Problems
Deep Persistent Slabs
A weak layer of facets exists near the base of the snowpack. The likelihood of human triggering is low given the layer's depth, but large triggers such as cornice failures or smaller avalanches in motion have the potential to produce very large avalanches with surprisingly wide propagation. Suspect terrain for human triggering includes steep, shallow, and rocky terrain where the snowpack transitions from thin to thick.
Aspects: All aspects.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Valid until: Mar 26th, 2023 4:00PM
