Recent snow and wind have formed reactive slabs.
A buried weak layer persist and if triggered may result in a large to very large avalanche.
Review this video for persistent slab strategies.
Recent storm snow and southwest winds continued to form wind slabs. Avalanches are expected be larger and more likely on west through north facing (leeward) slopes.
Cornices are large and fragile. Even a small period of sun and warming may be enough to cause a cornice to fail.
Two crusts, buried in early February (facets on top) and March are still a concern, particularly in the Hurley area and zones to the north. Smaller avalanches or cornice falls have the potential to trigger an avalanche on these layers.
Both Thursday and Friday, large to very large (size 2-3) natural storm slab avalanches were reported near Anderson Lake.
On Wednesday near Hurley Pass widespread cracking was observed during terrain travel.
Earlier in the week, numerous small rider-triggered storm slabs were reported north of Pemberton. Explosive control produced cornice and wind slab avalanches, with one stepping down to a deeper weak layer.
Moderate to strong southwest wind have formed deeper, and more reactive deposits in leeward terrain.
Expect to find, up to 35 to 70 cm of recent snow over a widespread, thick and hard crust below about 1800 m, and old wind-affected snow at upper elevations.
Two crusts, buried in early February and March are still a concern, particularly in the Hurley area and zones to the north. Expect to find them around 1-1.5 meters below the snow surface. Of the two, only the early February crust has been reported to have loose, sugary facets on top.
Saturday Night
Mostly cloudy. 2 cm of snow. 30 km/h southwest ridgetop wind. Treeline temperature -8 °C.
Sunday
Mostly cloudy. 1 to 4 cm of snow. 30 km/h west ridgetop wind. Treeline temperature -10 °C.
Monday
Mostly sunny. 1 cm of snow. 20 km/h west ridgetop wind. Treeline temperature -11 °C.
Tuesday
Mix of sun and clouds. 1 cm of snow. 30 km/h southwest ridgetop wind. Treeline temperature -9 °C.
More details can be found in the Mountain Weather Forecast.
