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Avalanche Forecast

Archived

Nov 25th, 2024–Nov 26th, 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, Homathko, Spearhead, Birkenhead, Duffey, Harrison-Fraser, South Chilcotin, Stein, Taseko.

Watch for wind slabs on a variety of aspects as the wind direction changes to northwest in the next few days.

Confidence

Moderate

Avalanche Summary

There 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

Last week's snowfall has been redistributed into alpine and treeline lee terrain. The snowpack is generally consolidated and bonding well.

Various melt-freeze crusts can be found in the lower half of the snowpack, which are likely not concerning avalanche layers.

The snowpack is around 120 to 150 cm at treeline and decreases rapidly at lower elevations.

Weather Summary

Monday Night

Scattered clouds. 5-15 km/h northwest ridgetop wind. Treeline temperature -7 °C. Freezing level 300-500 m.

Tuesday

Mix of sun and cloud. 15 to 25 km/h northwest ridgetop wind. Treeline temperature -5 °C. Freezing level 500-700 m.

Wednesday

Mix of sun and cloud. 20-30 km/h west and northwest ridgetop wind. Treeline temperature -6 °C. Freezing level 500 m.

Thursday

Mostly cloudy with scattered flurries. 25-50 km/h west and west ridgetop wind. Treeline temperature -7 °C. Freezing level 500 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Be careful as you transition into wind-affected terrain.
  • Recent wind has varied in direction, so watch for wind slabs on all aspects.

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.