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Archived

Avalanche Forecast

Dec 28th, 2023–Dec 29th, 2023
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
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
Alpine
1: Low
The avalanche danger rating in the alpine will be low
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

Be alert to conditions that change throughout the day with rising temperatures.

Avalanches are possible on slopes with wet or wind-affected snow.

Confidence

Moderate

Avalanche Summary

No recent avalanches have been reported. Recent snow, rain, and wind may have caused isolated wind slabs and wet loose avalanches in steep terrain since Thursday but field observations are limited.

Snowpack Summary

Up to 30-40 mm of precipitation has fallen since Wednesday night, with rain below 1500 m. Up 15-20 cm of wet snow may be found at upper elevations. This new snow should bond well to the warm and moist snow beneath. Total snow depths at ski hills and remote stations are 60 to 80 cm, with closer to 100 cm possible at treeline. Many areas are below the threshold depth for avalanches.

Weather Summary

Thursday Night

Cloudy with isolated flurries, alpine wind southeast 40 to 60 km/h, treeline temperature around +4 °C, freezing level around 1800 m.

Friday

Cloudy with no precipitation, alpine wind southeast 40 to 60 km/h, treeline temperature around +5 °C, freezing level climbing to 2500 m.

Saturday

Cloudy with 10-15 cm of snow above 1500 m (rain below), alpine wind south 50 to 70 km/h, treeline temperature around +2 °C, freezing level lowering to 1300 m by evening.

Sunday

Cloudy with sunny periods, no precipitation, alpine wind south 20 km/h, treeline temperature around 0 °C, freezing level around 1300 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Watch for newly formed and reactive wind slabs as you transition into wind affected terrain.
  • Use caution above cliffs and terrain traps where even small avalanches may have severe consequences.
  • As surface loses cohesion due to melting, loose wet avalanches become common in steeper terrain.

Avalanche Problems

Wind Slabs

New snowfalls and strong wind have formed reactive slabs on lee terrain features at upper elevations. Be alert to conditions that change with elevation and wind exposure.

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

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1 - 2

Loose Wet

Rain and rising temperatures could destabilize surface snow at treeline elevations and produce small wet, loose avalanches. Avalanches may be particularly dangerous due to obstacles that are exposed or just below the surface.

Aspects: All aspects.

Elevations: Treeline.

Likelihood: Possible

Expected Size: 1 - 1.5