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Archived

Avalanche Forecast

Jan 7th, 2025–Jan 8th, 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
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
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

Regions: Flathead, Lizard, Lizard-Flathead.

Strong winds are redistributing available snow into fresh wind slabs at upper elevations

Minimize exposure to avalanche terrain and overhead hazards during periods of heavy wind loading

Confidence

Moderate

Avalanche Summary

On Tuesday, a skier-triggered size 1 wind slab avalanche was reported. The avalanche was 15 to 20 cm deep and occurred in a steep north-facing couloir. See MIN for details!

If you head out in the backcountry, let us know what you are seeing by submitting a MIN report!

Snowpack Summary

Strong west winds are building fresh wind slabs in lee terrain at upper elevations. Unconsolidated snow can still be found in sheltered areas. Below this is 30 to 50 cm of settling snow.

Below 1500 m elevation a previously moist surface is now dense and refrozen.

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

Snow depths at treeline range from 140 to 220 cm.

Weather Summary

Tuesday Night

Cloudy with light flurries, 1 to 2 cm. 30 to 50 km/h west ridgetop wind. Treeline temperature -5 °C.

Wednesday

Cloudy with light flurries, 1 cm. 15 to 25 km/h northwest ridgetop wind. Treeline temperature -8 °C.

Thursday

A mix of sun and cloud. 10 to 25 km/h southwest ridgetop wind. Treeline temperature -6 °C.

Friday

Cloudy with light flurries, 1 to 4 cm. 30 to 50 km/h west ridgetop wind. Treeline temperature -7 °C

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.
  • Avoid freshly wind-loaded features, especially near ridge crests, rollovers, and in steep terrain.
  • Seek out sheltered terrain where new snow hasn't been affected by wind.

Avalanche Problems

Wind Slabs

Moderate gusting strong west winds have built new wind slabs on lee slopes at upper elevations. Wind slabs are most sensitive to triggering when they are newly formed. Look for signs of wind transport as you move through the terrain.

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

Elevations: Alpine, Treeline.

Likelihood: Likely

Expected Size: 1 - 2