Avalanche Forecast

Issued: Nov 21st, 2024 4:00PM

The alpine rating is moderate, the treeline rating is moderate, and the below treeline rating is low. Known problems include Wind Slabs.

Avalanche Canada Avalanche Canada, Avalanche Canada

Assess for wind slabs at higher elevations before committing to consequential terrain.

Summary

Confidence

Moderate

Avalanche Summary

We haven't received any recent reports of avalanche activity. Looking forward, it may be possible for riders to trigger slabs, particularly in wind-loaded terrain features at treeline and alpine elevations.

Watch out for early-season hazards like creeks, logs, and rocks, particularly at lower elevations.

Please consider sharing any observations you have on the Mountain Information Network.

Snowpack Summary

Around 100 cm of snow is found in the alpine, with the snowpack depth rapidly dropping with elevation below treeline. Recent snow and strong wind have formed storm and wind slabs, which are likely starting to bond to the snowpack. New snow and wind on Friday may form new slabs, particularly in wind-exposed terrain at high elevations.

Various melt-freeze crusts are found in the bottom half of the snowpack but are not avalanche concerns.

Weather Summary

Thursday Night

Partly cloudy. 10 to 20 km/h southeast ridgetop wind. Treeline temperature -5 °C.

Friday

Cloudy with 5 to 10 cm of snow. 20 to 40 km/h southeast ridgetop wind. Treeline temperature -4 °C.

Saturday

Cloudy with 5 to 10 cm of snow. 20 km/h south ridgetop wind. Treeline temperature -4 °C.

Sunday

Mix of sun and cloud. 10 km/h east ridgetop wind. Treeline temperature -5 °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.
  • Watch for signs of instability like whumpfing, hollow sounds, shooting cracks, or recent avalanches.

Problems

Wind Slabs

An icon showing Wind Slabs

Recent snow and strong southeast wind likely formed wind slabs. Riders are most likely to trigger them on steep lee slopes adjacent to ridges.

Aspects: North, North East, West, North West.

Elevations: Alpine, Treeline.

Likelihood

Possible

Expected Size

1 - 2

Valid until: Nov 22nd, 2024 4:00PM

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