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Avalanche Forecast

Archived

Nov 28th, 2024–Nov 29th, 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 avalanches unlikely, human triggered possible.
Treeline
Natural avalanches unlikely, human triggered possible.
Below Treeline
Natural avalanches unlikely.

Regions

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

Plan for firm surfaces and shallow coverage.

Seek out sheltered terrain where soft snow can still be found.

Confidence

Moderate

Avalanche Summary

There are no recent avalanches to report from the last few days.

Please consider sharing any observations you have on the Mountain Information Network.

Snowpack Summary

Large surface hoar crystals are growing in most areas, particularly where sheltered. Melt-freeze crusts are found on sun-exposed slopes and at lower elevations.

Sheltered, shaded, higher elevations may still hold pockets of soft snow, but past melt-freeze cycles and strong wind means the surface is mostly firm.

Snowpack depth at treeline is 140 - 170 cm in the Knuckles. On the North Shore, depths are around 100 to 145 cm and diminishs rapidly below treeline.

Weather Summary

Thursday Night

Mostly cloudy. 20 to 40 km/h west ridgetop wind. Treeline temperature -7 °C.

Friday

Cloudy with up to 5 cm of snow. 20 to 40 km/h west ridgetop wind. Treeline temperature -4 °C.

Saturday

Cloudy with 15 to 20 cm of snow. 40 to 50 km/h west ridgetop wind. Treeline temperature -3 °C.

Sunday

A mix of sun and cloud with less than 5 cm of snow. 20 to 30 km/h west ridgetop wind. Treeline temperature 0 °C. Freezing level 2400 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Carefully evaluate steep lines for wind slabs.
  • Use caution above cliffs and terrain traps where even small avalanches may have severe consequences.
  • A hard crust on the snow surface will help strengthen the snowpack, but may cause tough travel conditions.

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.