North Columbia

Thin wind slabs may still exist in high north facing alpine terrain where the snow remains dry.

Avalanche activity on Saturday was mostly reported as loose wet size 1-2 from steep terrain facing the sun.

Surface snow is likely a supportive crust or moist snow at all elevations except high north facing. Weak faceted grains sitting a crust formed in early February are now buried 100 to 150 cm. This layer has generally been gaining strength, however it is still occasionally producing large avalanches at upper elevations where supportive crusts have not formed above it.

Sunday Night

Partly cloudy. Ridge wind southwest 15 to 30 km/h. Treeline temperature -6 °C. Freezing level 1200 m.

Monday

Cloudy with 2-5 cm snow at higher elevations. Ridge wind southwest 20 to 40 km/h . Treeline temperature -2 °C. Freezing level 1600 m.

Tuesday

Cloudy with 5 to 15 cm of snow at upper elevations. Ridge wind southwest 30 to 60 km/h. Treeline temperature -1 °C. Freezing level 1700 m.

Wednesday

Mainly clear. Ridge wind northwest 10 to 20 km/h. Treeline temperature 1 °C. Freezing level 2000 m.

More details can be found in the Mountain Weather Forecast.

• Carefully evaluate steep lines for wind slabs.
• When a thick, melt-freeze surface crust is present, avalanche activity is unlikely.