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Archived

Avalanche Forecast

Apr 25th, 2025–Apr 28th, 2025
Alpine
3: Considerable
The avalanche danger rating in the alpine will be considerable
Treeline
2: Moderate
The avalanche danger rating at treeline will be moderate
Below Treeline
1: Low
The avalanche danger rating below treeline will be low
Alpine
3: Considerable
The avalanche danger rating in the alpine will be considerable
Treeline
2: Moderate
The avalanche danger rating at treeline will be moderate
Below Treeline
1: Low
The avalanche danger rating below treeline will be low
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
Treeline
1: Low
The avalanche danger rating at treeline will be low
Below Treeline
1: Low
The avalanche danger rating below treeline will be low

Start your day early and watch the crust closely.

As it breaks down, reduce your exposure to avalanche terrain.

Confidence

Low

Avalanche Summary

Wet loose avalanches have been occurring daily on steep slopes facing the sun. Mostly small, but some large avalanches (size 2 to 3).

Snowpack Summary

A thin surface crust is expected to cover up to 25 cm of recent snow at upper elevations. This snow overlies a robust crust buried around 20 to 30 cm, which is everywhere except northerly aspects in the alpine.

The mid and lower snowpack has no layers of concern.

Weather Summary

Friday Night

Partly cloudy. 10 to 20 km/h southeast ridgetop wind. Treeline temperature 3 °C. Freezing level 2400 m.

Saturday

Mix of sun and cloud. 10 to 20 km/h west ridgetop wind. Treeline temperature 5 °C. Freezing level 2500 m.

Sunday

Mix of sun and cloud. 10 km/h northwest ridgetop wind. Treeline temperature 5 °C. Freezing level 2400 m.

Monday

Cloudy with 5 to 10 cm of snow. 30 to 50 km/h southwest ridgetop wind. Treeline temperature 0 °C. Freezing level 2100 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • The more the snowpack warms up and weakens, the more conservative your terrain selection should be.
  • Avoid steep, sun-exposed slopes when the air temperature is warm or when solar radiation is strong.
  • Avalanche danger will increase as the surface crust breaks down.
  • Pay attention to cornices and give them a wide berth when traveling on or below ridges.

Avalanche Problems

Wet Slabs

Multiple days of warm temperatures and minimal overnight cooling may cause large, wet slab avalanches.

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

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 2 - 3

Loose Wet

Wet loose avalanches will become more likely as the sun and warmth affect the snowpack. Start early, and avoid the hottest part of the day.

If there is a thick surface crust, wet avalanches are unlikely.

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

Elevations: All elevations.

Likelihood: Very Likely

Expected Size: 1 - 3

Cornices

Large cornices hang over many ridges and are more likely to collapse during warm, sunny weather.

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

Elevations: Alpine.

Likelihood: Unlikely - Possible

Expected Size: 1.5 - 2.5