Avalanche Forecast

Issued: Dec 7th, 2023 4:00PM

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

Avalanche Canada mconlan, Avalanche Canada

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Use caution in steep terrain at high elevations where riders could trigger storm slabs. Early-season conditions prevail.

Summary

Confidence

Moderate

Avalanche Summary

We haven't received any reports of avalanche observations in this region. Please consider sharing your observations using the Mountain Information Network (MIN).

Looking forward, riders could trigger storm slab avalanches where the new snow hasn't bonded to the underlying snowpack. Use caution in steep terrain features at high elevations.

Snowpack Summary

Around 10 to 20 cm of snow sits on wet snow that will slowly freeze into a hard melt-freeze crust. A spotty surface hoar layer may be found about 20 to 30 cm deep. It is likely that the intense rain from earlier this destroyed this layer, but it could linger in isolated features.

The middle and base of the snowpack may also be moist from the rain, though weak faceted grains could persist where the snowpack isn't fully moist.

Snowpack depths at treeline are approximately 30 to 60 cm. The snowpack tapers drastically with elevation below treeline.

Weather Summary

Thursday Night

Cloudy with trace to 5 cm of snow, northwest alpine wind 20 km/h, treeline temperature -6 °C.

Friday

Mostly cloudy with trace snow, northwest alpine wind 20 to 30 km/h, treeline temperature -9 °C.

Saturday

Mostly cloudy with 1 to 3 cm of afternoon snow, south alpine wind 60 km/h, treeline temperature -8 °C.

Sunday

Cloudy with 5 to 15 cm of early-morning snow, south alpine wind 20 to 40 km/h, treeline temperature -6 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Closely monitor how the new snow is bonding to the old surface.
  • 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

Around 10 to 20 cm of snow may rest on a wet snowpack or hard melt-freeze crust. Use caution in steep, committing terrain features at higher elevations.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood

Possible

Expected Size

1 - 2

Valid until: Dec 8th, 2023 4:00PM

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