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Avalanche Forecast

Archived

Dec 21st, 2024–Dec 22nd, 2024

Alpine
Natural avalanches possible, human triggered probable.
Treeline
Natural avalanches possible, human triggered probable.
Below Treeline
Natural avalanches unlikely.
Alpine
Natural avalanches possible, human triggered probable.
Treeline
Natural avalanches unlikely, human triggered possible.
Below Treeline
Natural avalanches unlikely.
Alpine
Natural avalanches possible, human triggered probable.
Treeline
Natural avalanches possible, human triggered probable.
Below Treeline
Natural avalanches unlikely, human triggered possible.

Regions

South Coast, Powell River, North Shore, Sasquatch, Sasquatch, Sky Pilot, Tetrahedron, Harrison-Fraser.

A snowy and windy day, dial back your objectives.

Storm slabs will get larger and easier to trigger throughout the day.

Confidence

Moderate

Avalanche Summary

Observations have been limited in this region. We expect that natural avalanche activity will occur, especially in alpine areas where 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

15 to 30 cm of snow by the end of the day on the 22nd brings our 48 hour storm total to up to 60 cm in alpine areas. Strong southerly winds are expected to form deeper deposits on north-facing slopes.

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

Weather Summary

Saturday NightCloudy with up to 5 mm, falling as snow above 1250 m. 30 to 50 km/h southeast ridgetop wind. Freezing level around 1400 m.

Sunday

Cloudy with 5 to 25 mm, falling as snow above 1250 m. 40 to 60 km/h southeast ridgetop wind. Freezing level around 1500 m.

Monday

Cloudy with a short clearance in the afternoon. Up to 30 mm of mixed precipitation by early morning. 30 to 50 km/h south ridgetop wind. Freezing level 1400 m rising to 2000 m in the afternoon.

TuesdayCloudy with 15 to 30 mm of mixed precipitation. 60 to 80 km/h south ridgetop wind. Freezing level falling throughout the day to 1300 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.
  • Avoid lee and cross-loaded slopes in the alpine.
  • Be alert to conditions that change with aspect and elevation.

Problems

Storm Slabs

Storm Slab avalanches are the release of a cohesive layer (a slab) of new snow that breaks within new snow or on the old snow surface. Storm-slabs typically last between a few hours and few days (following snowfall). Storm-slabs that form over a persistent weak layer (surface hoar, depth hoar, or near-surface facets) may be termed Persistent Slabs or may develop into Persistent Slabs.