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Archived

Avalanche Forecast

Dec 23rd, 2024–Dec 24th, 2024
Alpine
3: Considerable
The avalanche danger rating in the alpine will be considerable
Treeline
3: Considerable
The avalanche danger rating at treeline will be considerable
Below Treeline
2: Moderate
The avalanche danger rating below treeline will be moderate
Alpine
3: Considerable
The avalanche danger rating in the alpine will be considerable
Treeline
3: Considerable
The avalanche danger rating at treeline will be considerable
Below Treeline
2: Moderate
The avalanche danger rating below treeline will be moderate
Alpine
3: Considerable
The avalanche danger rating in the alpine will be considerable
Treeline
3: Considerable
The avalanche danger rating at treeline will be considerable
Below Treeline
2: Moderate
The avalanche danger rating below treeline will be moderate

Regions: Howson, Kitimat, Microwave-Sinclair, Nass, Northwest Coastal, Rupert, Seven Sisters, Shames, Stewart.

Continually assess conditions as you move through terrain and be prepared to dial back objectives.

Whumphing, shooting cracks and avalanches are indicators of unstable conditions.

Confidence

Low

Avalanche Summary

On Sunday several natural wind slab avalanches were reported in the north of the region. These avalanches were up to size 3  and on northerly aspects in the alpine.

No new avalanches were reported in the south of the region where observations are limited.

Snowpack Summary

By 4 pm on the 24th  up to 20 cm of new snow may have fallen. This new snow will fall on an already heavily wind affected upper pack in the alpine and at treeline. Below treeline the snow surface is moist.

Two weak layers exist in the top meter of the snowpack from earlier in December. A layer of facets and/or surface hoar down 20 to 40 cm and a crust down 40 to 80 cm.

Treeline snow depth range from 200-280 cm. The lower snowpack has no layers of concern.

Weather Summary

Monday Night

Cloudy with around 5 cm of snow. 20 to 40 km/h east ridgetop wind. Treeline temperature -2 °C. Freezing level around 1000 m.

Tuesday

Mostly cloudy with 5 to 15 cm of snow. 20 to 50 km/h southeast ridgetop wind. Freezing level around 1200 m.

Wednesday

Cloudy with 5 to 15 cm of snow. 30 to 50 km/h southeast ridgetop wind. Freezing level rising to 1500 m.

Thursday

Mostly cloudy with around 15 cm of snow. 25 to 50 km/h southeast ridgetop wind. Freezing level around 1100 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Don't let storm day fever lure you into consequential terrain.
  • Be aware of the potential for large avalanches due to buried weak layers.
  • Watch for newly formed and reactive wind slabs as you transition into wind-affected terrain.
  • Recent wind has varied in direction, so watch for wind slabs on all aspects.

Avalanche Problems

Storm Slabs

New storm and wind slabs will likely be sensitive to rider traffic.

Storm and wind slab avalanches have the potential to step down to the weak layers mentioned in the snowpack summary.

Aspects: All aspects.

Elevations: All elevations.

Likelihood: Likely

Expected Size: 1.5 - 3