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Avalanche Forecast

Archived

Dec 11th, 2024–Dec 12th, 2024

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

Regions

South Coast, Powell River, Tantalus, North Shore, Sasquatch, Sasquatch, Sky Pilot, Tetrahedron.

Isolated pockets of wind slab may be found in the high alpine on north through east aspects.

Confidence

Moderate

Avalanche Summary

There have been no recent avalanche reports in the region.

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

Snowpack Summary

A firm crust may exist at upper elevations. Lower elevations snow surfaces are likely moist and sticky.

North through east-facing slopes in the alpine may have new surface hoar development and hold dryer snow (10 to 20 cm) which sits over moist snow. At treeline, 5 to 10 cm sits above a firm rain crust. Below the crust is a rain-soaked snowpack.

Snow depths at treeline vary across the region from 65 cm to 150 cm.

Weather Summary

Wednesday Night

Cloudy with clear periods. Treeline temperature +4 °C. Ridgetop wind light with gusts up to 40 km/hr from the south. Freezing level 1600 m.

Thursday

Cloudy with wet flurries 2 to 5 mm. 10 to 30 km/h southeast ridgetop wind. Treeline temperature +3 °C. Freezing level 1600 m.

Friday

Snow at higher elevations and rain 10 to 25 mm. 25 to 45 km/h southeast ridgetop wind. Treeline temperature +1 °C. Freezing level 1200 m.

Saturday

Snow at higher elevations and rain 30 to 40 mm. 30 to 70 km/h southeast ridgetop wind. Treeline temperature +2 °C. Freezing level 1200 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Be careful with wind-loaded pockets, especially near ridge crests and rollovers.
  • Seek out sheltered terrain where new snow hasn't been affected by wind.
  • Avalanche activity is unlikely when a thick melt-freeze crust is present on the snow surface.

Problems

Wind Slabs

Wind Slab avalanches are the release of a cohesive layer of snow (a slab) formed by the wind. Wind typically transports snow from the upwind sides of terrain features and deposits snow on the downwind side. Wind slabs are often smooth and rounded and sometimes sound hollow, and can range from soft to hard. Wind 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.