Buried weak layers can "wake-up" during periods of warming. Keep in mind your overhead hazard during the warmest part of the day.
Recent reported avalanches in the Icefields were down ~30cm on this suspect interface. This layer is concerning when there is a cohesive slab overlying it. Watch for the warnings in the snowpack like shooting cracks.
This problem is isolated to where there is enough snow to avalanche below tree-line with the high freezing levels.
Triggering may be possible in isolated features. Approaches or transitions with steep rocky terrain are particularly worrisome. Watch for signs of whumping and cracking.
Thursday
Mainly cloudy with isolated flurries.
Precipitation: Trace.
Alpine temperature: High -6 °C.
Ridge wind southwest: 15-35 km/h.
Freezing level: 1500m
The Mountain Weather Forecast is available at Avalanche Canada https://avalanche.ca/weather/forecast
No new avalanches have be reported.
As a general observation, the snowpack continues to be weak and largely unsupportive, though recent storm snow has improved travel. HS at tree-line is 45-75cm. Ski penetration is down ~30cm which shows that while shallow, there is some structure (slab) in the mid-pack. An interface down ~25cm shows up in snowpack tests; while in the field, reactivity will be subject to the strength of the slab over the PWL layer.
