New snow and wind are causing dangerous avalanche conditions. Stick to smaller, low-angle slopes.
Buried weak layers are most concerning at treeline elevations. Small slab avalanches may step down to this layer resulting in large, destructive avalanches.
New snow and wind will form reactive slabs on Tuesday. Slabs will be widespread in areas that receive more than 20 cm of new snow, while other areas will primarily see slabs form on wind-loaded slopes.
Minimal avalanche activity has been reported in this region. On Sunday, a small (size 1) storm slab avalanche was triggered by riders at Coquihalla Summit.
Storm slabs will grow with another pulse of snow and wind expected on Tuesday. Prior to this snow, a thin crust layer was reported 20 cm deep on south-facing and below treeline elevations.
A few concerning weak layers exist 80 to 120 cm deep including facets on a crust and, in some areas, surface hoar. While we have not had recent reports of persistent slab avalanches in this region, these layers should not be trusted based on notable activity in neighbouring regions.
Monday Night
Flurries with 5 to 15 cm of snow. 50 km/h southwest ridgetop wind. Treeline temperature -5 °C.
Tuesday
Flurries with 10 to 20 cm of snow. 50 km/h southwest ridgetop wind. Treeline temperature -5 °C.
Wednesday
Light flurries with 2 to 5 cm of snow overnight then mostly cloudy during the day. 20 km/hr west wind. Treeline temperature -4 °C with freezing level rising to 1200 m.
Thursday
Sunny. 15 km/hr northwest wind. Treeline temperature +5 °C with freezing level rising to 3000 m.
More details can be found in the Mountain Weather Forecast.
