Avalanche Forecast

Issued: Dec 22nd, 2024 4:00PM

The alpine rating is considerable, the treeline rating is considerable, and the below treeline rating is low. Known problems include Storm Slabs.

Avalanche Canada Avalanche Canada, Avalanche Canada

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Stick to mellow objectives despite the short clearance between storms.

Storm slabs will be larger and easier to trigger where the wind has made reactive deposits.

Summary

Confidence

Moderate

Avalanche Summary

Observations have been limited in this region. We expect avalanche activity will continue, especially in alpine areas where the new snow has been transported into reactive deposits by the wind.

If you are going out in the backcountry, please consider sharing your observations to the Mountain Information Network (MIN).

Snowpack Summary

Another 15 to 30 cm of snow fell on upper elevations overnight Sunday, with rain below treeline, bringing the total since Saturday to up to 60 cm in alpine areas. Strong southerly winds are expected to form deeper deposits on north-facing slopes.

Expect a rain-saturated snowpack or lack of snow at lower elevations.

You can check out this snowpack video about the North Shore conditions here.

Weather Summary

Sunday Night

Cloudy with 25 to 35 mm, falling as snow above 1100 m. 50 to 60 km/h southwest ridgetop wind. Treeline temperature -1 °C. Freezing level 1200 m.

Monday

Cloudy then clearing, with trace precipitation. 20 to 40 km/h south ridgetop wind. Freezing level 1400 m rising to 2400 m in the afternoon.

TuesdayCloudy with 15 to 30 mm of mixed precipitation. 50 to 80 km/h south ridgetop wind. Freezing level falling throughout the day to 1000 m.

WednesdayCloudy with 10 to 35 mm of mixed precipitation. 70 to 90 km/h south ridgetop wind. Freezing level 1000 m.

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.
  • Avoid lee and cross-loaded slopes in the alpine.
  • Be alert to conditions that change with aspect and elevation.
  • Back off slopes as the surface becomes moist or wet with rising temperatures.

Problems

Storm Slabs

An icon showing Storm Slabs

Storm slabs have formed at treeline and above. Expect deeper and more reactive deposits on lee slopes.

Wet loose avalanches are possible with warm temperatures and rain at lower elevations.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood

Likely

Expected Size

1 - 2

Valid until: Dec 23rd, 2024 4:00PM

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