Avoid large, steep features where triggering the persistent problem is still a concern.
Patience and conservative terrain choices are recommended.
Weak layers from January and February persist within the upper 100 cm of snow. Natural avalanche activity has tapered off, however, human-triggering the persistent layers remains a concern.
Surface hoar crystals and/or a crust may cause the storm slab to take longer than normal to heal.
On Wednesday, south of Revelstoke there was a large (size 3) natural persistent slab avalanche on a south aspect at 2500 m. It's suspected to have failed on the late January weak layer.
There were also a few large (size 2) natural and rider-triggered storm slabs that were 20 to 30 cm deep. As well as many small (size 1-1.5) dry loose avalanches, both natural and rider-triggered.
10 to 15 cm of new snow sits on a 3 to 5 cm thick melt-freeze crust that is everywhere except north facing slopes above 2000 m.
A weak layer, composed of facets, surface hoar, or a crust, is found 20 to 60 cm deep. Another persistent weak layer, buried in late January, lies 50 to 110 cm deep. This layer is surface hoar, facets, or a crust, depending on the aspect.
The remaining snowpack is well-settled and strong.
Thursday Night
Mostly clear skies. 20 to 30 km/h west ridgetop wind. Treeline temperature -8 °C.
Friday
Mix of sun and clouds. 20 to 30 km/h southwest ridgetop wind. Treeline temperature -5 °C. Freezing level 1800 m.
Saturday
Cloudy with 10 to 20 cm of snow. 30 to 50 km/h southwest ridgetop wind. Treeline temperature -3 °C. Freezing level 1600 m.
Sunday
Cloudy with 20 to 40 cm of snow. 30 to 50 km/h southwest ridgetop wind. Treeline temperature -2 °C. Freezing level 1700 m.
More details can be found in the Mountain Weather Forecast.
