Avalanche Forecast

Issued: Nov 29th, 2022 4:00PM

The alpine rating is high, the treeline rating is considerable, and the below treeline rating is moderate. Known problems include Storm Slabs.

Avalanche Canada rgoddard, Avalanche Canada

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Heavy snowfall is expected to bring with it increased avalanche activity.

Summary

Confidence

Moderate

Avalanche Summary

No new avalanches have been observed in our area. In the Whistler area, however, there was one skier accidental size 2 produced from triggering a wind slab. If you head into the backcountry consider submitting a MIN report.

Snowpack Summary

At around 1000 m our snowpack is sitting at 85 cm. Since Monday morning, there has been 5 cm of new snow. At the highest elevations, recent wind-affected snow covers a melt-freeze crust and moist upper snowpack.

Snow is beginning to cover the surface roughness. The snow-dirt line is found around 1000 m, and most solar slopes and below treeline are below the threshold for avalanches. This will begin to change with the incoming storm.

Weather Summary

Tuesday Night

Cloudy, 30 to 35 cm accumulation, winds south-southwest 25 km/h gusting to 50, temperatures -5 to -10 at 1500 m.

Wednesday

Cloudy with some sunny periods, 5 to 15 cm accumulation, winds southwest 20 km/h gusting to 50, temperatures around -7 C.

Thursday

Mostly sunny, trace accumulation, winds northwest 8 km/h, temperatures -5 C at 500 m.

Friday

Mix of sun and cloud, 0 to 5 cm accumulation, winds southeast 10 km/h, temperatures -7 C with freezing levels climbing to 400 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Watch for fresh storm slabs building throughout the day.
  • Storm slab size and sensitivity to triggering will likely increase through the day.
  • Dial back your terrain choices if you are seeing more than 30 cm of new snow.
  • Travel in alpine terrain is not recommended.

Problems

Storm Slabs

An icon showing Storm Slabs

Wednesday's storm will bring with it substantial accumulations. Rapid and intense loading will produce naturally triggered avalanches.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood

Very Likely

Expected Size

1 - 2

Valid until: Nov 30th, 2022 4:00PM

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