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Archived

Avalanche Forecast

Jan 22nd, 2025–Jan 23rd, 2025
Alpine
3: Considerable
The avalanche danger rating in the alpine will be considerable
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
1: Low
The avalanche danger rating at treeline will be low
Below Treeline
1: Low
The avalanche danger rating below treeline will be low

Regions: Howson, Kitimat, Nass, Rupert, Seven Sisters, Shames.

Allow new snow time to settle and stabilize before venturing into larger terrain. Uncertainty remains about how weak layers deep in the snowpack will react to the added load.

Confidence

Moderate

Avalanche Summary

While no new avalanche activity has been reported at the time of publishing, avalanche activity has likely occurred on Wednesday due to snowfall and increased winds. Paticularly in areas closer to the coast, which are forecast to received more snowfall.

Snowpack Summary

Up to 30 cm of new snow has accumulated since the weekend, with lower amounts in inland areas. Westerly winds have redistributed this new snow into deeper deposits in leeward terrain. A layer of weak surface hoar crystals may exist beneath the new snow in wind-sheltered terrain, while previously wind-affected surfaces have been buried elsewhere.

Deeper in the snowpack, approximately 100 to 200 cm below the surface, a crust with faceted crystals, and/or surface hoar, buried in early December, persist.

The lower snowpack is generally well-settled with no current concerns.

Weather Summary

Wednesday Night

Cloudy with 10 to 20 cm of snow. 40 to 50 km/h west ridegtop wind. Treeline temperature -3 °C.

Thursday

Mostly cloudy with 0 to 2 cm of snow. 40 to 50 km/h west ridgetop wind. Treeline temperature -5 °C.

Friday

Partly cloudy. 30 to 40 km/h northwest ridgetop wind. Treeline temperature -5 °C.

Saturday

Partly cloudy. 30 to 40 km/h northwest ridgetop wind. Treeline temperature -2 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Give the new snow several days to settle and stabilize before pushing into bigger terrain.
  • Be especially cautious as you transition into wind-affected terrain.
  • If triggered, wind slabs avalanches may step down to deeper layers resulting in larger avalanches.

Avalanche Problems

Storm Slabs

Aniticipate recent storm and wind slab development, particularly in areas that have received over 20 cm of new snow.

Aspects: All aspects.

Elevations: All elevations.

Likelihood: Possible - Likely

Expected Size: 1 - 2

Persistent Slabs

A widespread crust with surface hoar and/or facets, buried in early December is buried 100 to 200 cm deep. The same layer has been responsible for several large, destructive avalanches in regions to the north.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Unlikely - Possible

Expected Size: 2 - 3