Large avalanches are still reactive to human triggers.
Use safe travel habits and regroup in safe spots.
It remains possible that humans could trigger surface hoar and/or faceted grains that were buried mid-February, especially at high elevations where a thick crust doesn't exist above it.
Recently riders have triggered very large avalanches. The snow is slow to bond to underlying layers of surface hoar and/or a hard crust. Slabs are reactive in immediate lee terrain features from new snow and strong wind.
A few small and large (size 1 and 2) storm slabs were reported on Sunday. On Saturday 2 very large (size 3) rider-triggered avalanches were reported on northeast and east aspects near Valemount. On Friday near the southern boundary of the forecast region, numerous large to very large (size 3-4) persistent slab avalanches were triggered during explosive control work.
Monday night
Cloudy with 0 to 2 cm of snow. 20 to 30 km/h west ridgetop wind. Treeline temperature -11 °C.
Tuesday
Mix of sun and cloud. 20 to 30 km/h west ridgetop wind. Treeline temperature -10 °C.
Wednesday
Mix of sun and cloud. 20 to 30 km/h southwest ridgetop wind. Treeline temperature -6 °C.
Thursday
Cloudy with 0 to 5 cm of snow. 30 to 50 km/h south ridgetop wind. Treeline temperature -5°C.
More details can be found in the Mountain Weather Forecast.
