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Avalanche Forecast

Archived

Nov 26th, 2024–Nov 27th, 2024

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.
Alpine
Natural avalanches unlikely, human triggered possible.
Treeline
Natural avalanches unlikely, human triggered possible.
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 stashes for better quality, safer skiing and riding. Put your guard up if you encounter signs of new wind slabs forming.

Confidence

Moderate

Avalanche Summary

There were no reports of avalanche activity on Monday.

There were reports of a few explosives triggered size 2 storm and wind slab avalanches on northerly aspects in the alpine on Saturday and Sunday.

Snowpack Summary

Large surface hoar is growing on the snow surface, particularly in sheltered areas. This tops around 30 cm of recent snow that is settling well and remains soft in sheltered areas but has been heavily wind-redistributed in alpine and exposed treeline terrain.

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

Tuesday night

Increasing cloud. 20 to 30 km/h west or northwest ridgetop wind. Freezing level 700 m.

Wednesday

Mainly cloudy. 30 km/h west and northwest ridgetop wind. Treeline temperature -6 °C. Freezing level 700 m.

Thursday

Mostly cloudy with scattered flurries bringing less than 5 cm of new snow, increasing overnight. 20-30 km/h southwest ridgetop wind. Treeline temperature -5 °C. Freezing level 700 m.

Friday

Diminishing flurries and cloud with 5 -15 cm of new snow from the previous 24 h, mainly in the south of the region. 35 km/h west ridgetop wind. Treeline temperature -6 °C. Freezing level 800 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Seek out sheltered terrain where new snow hasn't been affected by wind.
  • Carefully evaluate steep lines for wind slabs.
  • Wind slabs are most reactive during their formation.

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.