Avalanche Forecast

Issued: Dec 5th, 2023 4:00PM

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

Avalanche Canada isnowsell, Avalanche Canada

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A thick crust on the surface will provide stable avalanche conditions in most areas. Assess for cohesive storm and wind slabs at higher elevations where the crust may be buried or not exist.

Summary

Confidence

Moderate

Avalanche Summary

No avalanches have been reported in the region yet this season. We expect a natural avalanche cycle occurred during peak warming Monday night.

If you're heading out in the backcountry, please consider sharing any observations on the Mountain Information Network

Snowpack Summary

At lower elevations, below roughly 1800 m, a widespread thick crust continues to form in the aftermath of Monday's warm, wet weather. This crust should provide a bridge over any previous layers of concern deeper in the snowpack.

In the alpine areas that did not receive significant rain, approximately 20 to 40 cm of dense, heavy snow sits over various layers of crusts, faceted snow, and isolated pockets of surface hoar in sheltered areas.

Weather Summary

Tuesday Night

Cloudy with trace amounts of snow, southwest alpine winds 20 to 40 km/h, treeline temperature -2 °C, freezing level 1500 m and dropping.

Wednesday

Mix of sun and cloud with no precipitation, west alpine winds 10 to 20 km/h, treeline temperature -4 °C.

Thursday

Mix of sun and cloud with no precipitation, south alpine winds 10 to 20 km/h, treeline temperature -7 °C.

Friday

Mostly sunny with precipitation overnight, northwest alpine winds 10 to 30 km/h, treeline temperature -8 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • When a thick, melt-freeze surface crust is present, avalanche activity is unlikely.
  • Snow is accumulating at higher elevations despite lower elevations being almost snow free
  • Early season avalanches at any elevation have the potential to be particularly dangerous due to obstacles that are exposed or just below the surface.

Problems

Storm Slabs

An icon showing Storm Slabs

In alpine areas where a surface crust is not present, reactive storm slabs may exist.

Aspects: All aspects.

Elevations: Alpine.

Likelihood

Possible - Likely

Expected Size

1 - 2

Valid until: Dec 6th, 2023 4:00PM

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