Avalanche Forecast

Issued: Jan 31st, 2025 4:00PM

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

Avalanche Canada Avalanche Canada, Avalanche Canada

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New snow and wind will create dangerous avalanche conditions.

The Forecaster Blog explains how to manage the changing conditions.

Summary

Confidence

Moderate

Avalanche Summary

A few size 1 wind slab and loose dry avalanches have been reported since Tuesday, along with some loose wet avalanches from steep south aspects.

We expect to see an increase in avalanche frequency and size as the new snow amounts increase.

Snowpack Summary

The new snow has fallen on a variety of old surfaces. There is surface hoar, most prevalent at treeline and below treeline elevations, a crust on sun-facing slopes, and 20 to 30 cm of low-density faceted snow in sheltered areas.

Dry January conditions have created a weak, faceted upper snowpack with multiple surface hoar and crust layers. These layers are a concern with the new snow amounts forecasted.

The mid and lower snowpack remains generally well-settled and strong, with no current concerns or significant instability noted.

Weather Summary

Friday night

Cloudy with 10 to 20 cm of snow. 30 to 50 km/h southwest ridgetop wind. Treeline temperature -7 °C.

Saturday

Scattered cloud with 5 to 10 cm of snow. 20 to 30 km/h west ridgetop wind. Treeline temperature -11 °C.

Sunday

Mostly cloudy with 5 to 10 cm of snow. 10 to 20 km/h south ridgetop winds. Treeline temperature -12 °C.

Monday:

Mostly cloudy with 0 to 5 cm of snow. 10 to 20 km/h southeast ridgetop wind. Treeline temperature -14 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Storm slab size and sensitivity to triggering will likely increase through the day.
  • Be aware of the potential for larger than expected storm slabs due to buried surface hoar.
  • Loose avalanches may start small, but they can grow and push you into dangerous terrain.

Problems

Storm Slabs

An icon showing Storm Slabs

As the new snow accumulates expect dangerous avalanche conditions.

Aspects: All aspects.

Elevations: All elevations.

Likelihood

Very Likely

Expected Size

1.5 - 2.5

Valid until: Feb 1st, 2025 4:00PM

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