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Archived

Avalanche Forecast

Mar 2nd, 2025–Mar 3rd, 2025
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
Treeline
2: Moderate
The avalanche danger rating at treeline will be moderate
Below Treeline
1: Low
The avalanche danger rating below treeline will be low
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
Treeline
2: Moderate
The avalanche danger rating at treeline will be moderate
Below Treeline
1: Low
The avalanche danger rating below treeline will be low
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
Treeline
2: Moderate
The avalanche danger rating at treeline will be moderate
Below Treeline
1: Low
The avalanche danger rating below treeline will be low

Regions: Coquihalla, Harrison-Fraser, Manning, Skagit.

Sunny aspects softening in the afternoon will provide the best riding but also heightened avalanche conditions.

Confidence

Moderate

Avalanche Summary

Recent avalanche activity has been mostly loose wet out of steep solar aspects, size 1-2.

Very large persistent slab avalanches were observed in the Manning area over a week ago.

Snowpack Summary

Below 1300 m, the snowpack is isothermal and disappearing quickly. At upper elevations, a widespread surface crust may break down during the day on sunny aspects, while shady aspects remain crusty.

A weak layer of facets and/or surface hoar is buried 50 to 120 cm deep. Large avalanches ran on this layer last weekend and it continued to give easy results in snowpack tests during the week.

A crust from December, buried 1 to 2 m deep, has been observed to be breaking down.

Weather Summary

Sunday night

Partly cloudy with a trace of snow. 10 to 20 km/h northwest ridgetop wind. Treeline temperature -1°C. Freezing level 1400 m.

Monday

Sunny. 10 to 30 km/h northeast ridgetop wind. Treeline temperature 0°C. Freezing level 1600 m.

Tuesday

A mix of sun and cloud. 10 to 30 km/h south ridgetop wind. Treeline temperature 0°C. Freezing level 1700 m.

Wednesday

A trace of snow overnight then clearing to a mix of sun and cloud. 10 to 30 km/h southwest ridgetop wind. Treeline temperature -1°C. Freezing level 1500 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • A hard crust on the snow surface will help strengthen the snowpack, but may cause tough travel conditions.
  • A moist or wet snow surface, pinwheeling, and natural avalanches are all indicators of a weakening snowpack.
  • Be mindful that deep instabilities are still present in the snowpack.
  • Use extra caution around cornices: they are large, fragile, and can trigger slabs on slopes below.

Avalanche Problems

Persistent Slabs

Over a week ago, large avalanches were observed on a buried weak layer. This layer continues to give easy results in snowpack tests, indicating a lingering possibility of triggering.

Aspects: North, North East, East, West, North West.

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 2 - 3

Wind Slabs

Wind slabs may remain sensitive to rider triggers in lee terrain features, especially at higher elevations. Small wind slab releases may step down to weak layers in the upper snowpack to produce larger, more destructive avalanches.

Aspects: North, North East, East, West, North West.

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1 - 2