Avalanche Forecast

Issued: Jan 5th, 2024 4:00PM

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

Avalanche Canada lcrawley, Avalanche Canada

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7 am update: Avalanche danger will increase through the day as new snow builds fresh storm slabs. Stick to low-angle slopes with no large slopes above.

Summary

Confidence

High

Avalanche Summary

Several small (size 1 to 1.5) dry loose avalanches were triggered in the Lizard Range on Friday.

Wednesday: Near Fernie, two large (size 2) avalanches were triggered with explosives at 2100 m. These failed on buried surface hoar 30 cm deep.

Snowpack Summary

Expecting up to 15 cm of new snow sitting over crusts on solar aspects, surface hoar, wind-affected snow, and facets.

The snowpack contains a couple of thick, hard crusts buried 10 to 20 cm and 30 to 70 cm deep. In most areas, the snowpack has no weak layers below. Except for one location in the Lizard Range, where the crust disappears around treeline and a layer of surface hoar was found. This layer hasn't been found elsewhere in the Lizard Range.

The snow depth at treeline is 50 to 150 cm, with the deepest snowpack near Fernie. Snow depth decreases rapidly at lower elevations.

Weather Summary

Friday Night

Mostly cloudy with up to 5 cm of snow, southwest alpine wind 35 to 55 km/h, treeline temperature -9 °C.

Saturday

Mostly cloudy with 5 to 10 cm of snow, southwest alpine wind 15 to 35 km/h, treeline temperature -8 °C.

Sunday

Mostly cloudy with up to 5 cm of snow, alpine wind calm to 15 km/h from various directions, treeline temperature -13 °C.

Monday

Mostly cloudy with a dusting of snow, west alpine wind 35 km/h, treeline temperature -13 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Avoid all avalanche terrain during periods of heavy snowfall.
  • Storm snow and wind is forming touchy slabs. Use caution in lee areas in the alpine and treeline.
  • Storm slab size and sensitivity to triggering will likely increase through the day.
  • Be aware of the potential for loose avalanches in steep terrain where snow hasn't formed a slab.

Problems

Storm Slabs

An icon showing Storm Slabs

The deeper the new snow, the more reactive the storm slab problem is expected to be. Watch for shooting cracks as they indicate triggering an avalanche is likely.

Aspects: All aspects.

Elevations: All elevations.

Likelihood

Very Likely

Expected Size

1 - 2

Valid until: Jan 6th, 2024 4:00PM

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