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

Regions

Sea To Sky, South Coast Inland, Brandywine, Garibaldi, Homathko, Spearhead, Birkenhead, Duffey, Harrison-Fraser, South Chilcotin, Stein, Taseko.

Seek out sheltered powder for better quality and safer riding.

Have a plan to manage small wind slabs if you're tackling something steeper.

Confidence

Moderate

Avalanche Summary

No avalanches have been reported recently.

Snowpack Summary

Large surface hoar is growing particularly in sheltered areas. Thin melt-freeze crusts may be found on sun-exposed slopes.

Below, 20 - 30 cm of settled snow remains soft in sheltered areas but is heavily wind-affected in alpine and exposed treeline terrain. Cold temperatures are faceting this upper layer, causing snow grains to lose cohesion.

The most recognizable of several melt-freeze crusts in the lower snowpack is 100 - 150 cm deep in the Whistler area, decomposing, and not considered a problematic avalanche layer.

Snowpack height is around 120 to 150 cm at treeline and decreases rapidly below about 1500 m.

Weather Summary

Thursday Night

Cloudy. 30 to 40 km/h west ridgetop wind. Treeline temperature -6 °C.

Friday

Cloudy with up to 5 cm of snow. 30 to 40 km/h west ridgetop wind. Treeline temperature -7 °C.

Saturday

Cloudy with 10 to 20 cm of snow. 30 to 40 km/h southwest ridgetop wind. Treeline temperature -3 °C.

Sunday

A mix of sun and cloud with up to 5 cm of snow, ending in the morning. 20 to 40 km/h west ridgetop wind. Treeline temperature 0 °C. Freezing level 2000 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Make observations and continually assess conditions as you travel.
  • Seek out sheltered terrain where new snow hasn't been affected by wind.
  • Carefully evaluate steep lines for wind slabs.

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.