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Archived

Avalanche Forecast

Feb 20th, 2025–Feb 21st, 2025
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
Treeline
2: Moderate
The avalanche danger rating at treeline will be moderate
Below Treeline
2: Moderate
The avalanche danger rating below treeline will be moderate
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
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

Carefully assess local conditions, as new snow, wind, and warming temperatures could increase avalanche danger throughout the day.

Confidence

Moderate

Avalanche Summary

There have been a few reports of small (size 1-1.5) loose dry avalanches from steep terrain over the past few days.

Otherwise, no avalanche activity has been reported since last weekend.

With more snow, wind, and warm temperatures in the forecast, we anticipate natural avalanche activity in the coming days.

Snowpack Summary

New snow is accumulating across the region, burying various surfaces, including old wind-affected snow in exposed terrain, sun crusts on south-facing slopes, and weak surface hoar or faceted grains in sheltered areas.

Layers from dry conditions in January are found at varying depths within the upper 100 cm of snow. These include weak faceted snow, sun crusts on south-facing slopes, and surface hoar in shaded terrain.

The mid and lower snowpack is generally well-settled and strong.

Weather Summary

Thursday Night

Cloudy with 1 to 4 cm of snow. 20 to 40 km/h southwest ridgetop wind. Treeline temperature -5 °C.

Friday

Cloudy with 2 to 10 cm of snow. 30 to 60 km/h southwest ridgetop wind. Treeline temperature -4 °C.

Saturday

Cloudy with 10 to 20 cm of snow. 20 to 40 km/h south ridgetop wind. Treeline temperature -1 °C. Freezing level rising to 1800 m.

Sunday

Cloudy with 5 to 15 cm of snow. 20 to 40 km/h southwest ridgetop wind. Treeline temperature -1 °C. Freezing level rising to 1800 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Pay attention to the wind; once it starts to blow, sensitive wind slabs are likely to form.
  • Avalanche danger is expected to increase throughout the day.
  • Be aware of the potential for large avalanches due to buried weak layers.

Avalanche Problems

Wind Slabs

New snow and moderate southwest wind will build fresh slabs on lee slopes.

Aspects: North, North East, East, South East, North West.

Elevations: Alpine, Treeline.

Likelihood: Likely

Expected Size: 1 - 2

Persistent Slabs

Weak layers from recent dry, clear, and cold conditions persist within the upper 100 cm of snow. These layers could become more reactive with the added stress of new snow and warming temperatures.

Aspects: All aspects.

Elevations: All elevations.

Likelihood: Possible

Expected Size: 1 - 2.5