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Archived

Avalanche Forecast

Jan 30th, 2025–Jan 31st, 2025
Alpine
4: High
The avalanche danger rating in the alpine will be high
Treeline
4: High
The avalanche danger rating at treeline will be high
Below Treeline
3: Considerable
The avalanche danger rating below treeline will be considerable
Alpine
4: High
The avalanche danger rating in the alpine will be high
Treeline
4: High
The avalanche danger rating at treeline will be high
Below Treeline
3: Considerable
The avalanche danger rating below treeline will be considerable
Alpine
3: Considerable
The avalanche danger rating in the alpine will be considerable
Treeline
3: Considerable
The avalanche danger rating at treeline will be considerable
Below Treeline
3: Considerable
The avalanche danger rating below treeline will be considerable

Regions: Bonnington, Grohman, Kootenay Boundary, Kootenay Pass, Norns, Rossland, Ymir.

Up to 30 cm of new snow may be seen by Friday afternoon. Travel in avalanche terrain is not recommended.

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Confidence

Moderate

Avalanche Summary

No new avalanches were reported on Wednesday.

Natural and human-triggered avalanches are likely on Friday and through the weekend.

Snowpack Summary

15 to 30 cm of snow is forecast by Friday afternoon. The new snow will likely have a poor bond to the old snow surfaces. These consist of a thick melt-freeze crust on sun-exposed slopes, large surface hoar and/or facets on shaded slopes, and wind-affected surfaces in exposed terrain.

The upper snowpack may contain one or more layers of surface hoar buried sometime in January. These layers are not currently a problem but may wake up with the upcoming storm loading.

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

Weather Summary

Thursday Night

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

Friday

Cloudy with snow 10 to 25 cm with enhanced amounts near Kootenay Pass. 15 gusting to 45 km/h southwest ridgetop wind. Treeline temperature -3 °C.

Saturday

New snow 5 to 10 cm. 15 gusting to 70 km/h southwest ridgetop wind. Treeline temperature -4 °C.

Sunday

Cloudy with flurries. 20 km/h southwest ridgetop wind. Treeline temperature -10 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Avoid avalanche terrain during periods of heavy snowfall.
  • Avalanche danger is expected to increase throughout the day.
  • Storm slabs in motion may step down to deeper layers resulting in large avalanches.

Avalanche Problems

Storm Slabs

Reactive storm slabs will build through the day. Northeast aspects will likely see deeper slabs with wind loading.

Dry loose avalanches are likely from steep terrain features.

Aspects: All aspects.

Elevations: All elevations.

Likelihood: Very Likely

Expected Size: 1 - 2