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Avalanche Forecast

Archived

Dec 29th, 2024–Dec 30th, 2024

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

Regions

South Coast Inland, Birkenhead, Duffey, South Chilcotin, Stein, Taseko.

Wind slabs remain the primary concern, approach ridgelines with caution.

Confidence

Moderate

Avalanche Summary

Observations have been limited in this region. We expect wind slabs will continue to be reactive to rider triggering.

Please share any observations or photos to the Mountain Information Network (MIN).

Snowpack Summary

Up to 30 cm of wind affected snow sits above a crust, which exists up to 1900 m.

Another crust is buried 60 to 100 cm deep, and in sheltered terrain a layer of surface hoar may exist just above it. There is uncertainty over its reactivity. It is more likely to be a concern in wind affected, thin and rocky start zones at higher elevations.

Snow depths at treeline vary between 90 to 160 cm.

Weather Summary

Sunday Night

Cloudy with up to 5 cm of snow. 10 km/h southwest ridgetop wind. Treeline temperature -6 °C.

MondayPartly cloudy with flurries. 10 to 20 km/h southwest ridgetop wind. Treeline temperature -7 °C.

Tuesday

A mix of sun and cloud. 20 to 30 km/h southwest ridgetop wind. Treeline temperature -8 °C.

Wednesday

A mix of sun and cloud. 10 to 20 km/h southwest ridgetop wind. Treeline temperature -8 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Watch for newly formed and reactive wind slabs as you transition into wind-affected terrain.
  • Choose low-angled, sheltered terrain where new snow hasn't been wind-affected.
  • Be aware of the potential for large avalanches due to buried weak layers.

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.