Avalanche Forecast
Issued: Feb 8th, 2024 4:00PM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Persistent Slabs and Deep Persistent Slabs.
TT,
Avalanche Canada
The complexity and spatial variability of the current snowpack warrant careful evaluation and a critical mindset. Now is a good time to dust off your avalanche course skills and apply them in the field.
Summary
Confidence
Moderate
Avalanche Summary
No new avalanches were observed or reported in the last couple days.The field team on Monday triggered a sz 1.5 persistent slab on a south asp. at TL in Boundary Lake on the Parkway. Triggered with a whumph and was slow to initiate.
Snowpack Summary
5 - 10 cm of recent snow sits over a variable, breakable crust. This crust is 1-3cm thick on shaded aspects, and up to a 15-20cm thick on solar aspects. Big, connected, and sunny tree line features are the most troublesome. Persistent and deep persistent weak layers remain ever-present and active. Do not trust either of these layers.
Weather Summary
Friday: A mix of sun and cloud. Precipitation: Nil. Alpine temperature: High -9 °C. Ridge wind light northeast to 15 km/h. Freezing level at valley bottom.
Saturday: Cloudy with sunny periods. No snow, light west winds. Alpine high of -8 C.
The Mountain Weather Forecast is available at Avalanche Canada https://www.avalanche.ca/weather/forecast
Terrain and Travel Advice
- Avoid shallow snowpack areas, rock outcroppings and steep convex terrain where triggering is most likely.
Problems
Persistent Slabs
Our recent melt-freeze cycle was not strong enough to heal our persistent slab problem. This weak layer, buried 20-40cm deep, is still reactive in snowpit tests and human triggering remains possible, particularly in shallow rocky start zones.
Aspects: All aspects.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Deep Persistent Slabs
The base of the snowpack is inherently weak and untrustworthy. Human and natural triggering of these basal facets remains possible.
Aspects: All aspects.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Valid until: Feb 9th, 2024 4:00PM
