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Avalanche Forecast

Archived

Nov 30th, 2024–Dec 1st, 2024

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

Regions

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

Avoid areas where the wind has created deep deposits.

The new snow could be sitting on a touchy layer of surface hoar.

Confidence

Moderate

Avalanche Summary

No new avalanches have been reported since the 25th of Nov.

Snowpack Summary

5 to 10 cm of new snow or wind loading may hide large surface hoar crystals in sheltered areas. This could be shallow, but easy to trigger.

Thin melt-freeze crusts may be found on sun-exposed slopes under the 5 cm of new snow.

The most prominent of several melt-freeze crusts in the lower snowpack is 100 - 150 cm deep in the Whistler area and decomposing.

Snowpack depth is around 130 cm at treeline and decreases rapidly below about 1500 m.

Weather Summary

Saturday Night

Cloudy with up to 2 cm of snow. 20 to 30 km/h west ridgetop wind. Treeline temperature -3 °C.

Sunday

Mostly sunny. 20 to 30 km/h southwest ridgetop wind. Treeline temperature 1 °C. Freezing level 2000 m.

Monday

Sunny. 20 to 30 km/h south ridgetop wind. Treeline temperature 4 °C. Freezing level 3000 m.

Tuesday

Sunny. 10 km/h west ridgetop wind. Treeline temperature 4 °C. Freezing level 3000 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Approach lee and cross-loaded slopes with caution.
  • Use caution above cliffs and terrain traps where even small avalanches may have severe consequences.
  • Back off slopes as the surface becomes moist or wet with rising temperatures.

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.