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Archived

Avalanche Forecast

Nov 30th, 2022–Dec 1st, 2022
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
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
2: Moderate
The avalanche danger rating at treeline will be moderate
Below Treeline
1: Low
The avalanche danger rating below treeline will be low

Regions: North Shore, Sasquatch, Skagit, Sky Pilot, South Coast, Stave, Tetrahedron.

Recent storm snow will need more time to settle and bond.

Seek sheltered areas where the wind hasn't loaded terrain features.

Confidence

Low

Avalanche Summary

Many small loose dry avalanches have been reported throughout the area. A group reported in the MIN Wednesday morning that they experienced cracks in the snow and that the new snow layer was reactive.

Snowpack Summary

Approximately 40 cm of new snow fell Tuesday evening. This new storm slab will be reactive and a natural avalanche cycle is to be expected Wednesday. At higher elevations, the new snow covers wind-affected snow which overlies a melt-freeze crust. In the immediate lee of features pockets of wind-loaded snow are to be expected.

At around 1000 m the snowpack is reach depths between 95 and 125 cm. Below treeline elevation, the conditions for avalanches are still below the threshold.

Weather Summary

Wednesday Night

Clear with cloudy periods, no accumulation, winds southwest 20 km/h, temperature -5 C at 1000 m.

Thursday

Sunny with cloudy periods, no accumulation, winds southeast 15 km/h, -5 C at 500 m.

Friday

Cloudy, 15 - 20 cm accumulation, winds southeast 20 to 30 km/h, temperatures 0 to -5 C at 500 m.

Saturday

Mix of sun and cloud, 5 cm accumulation, winds east 10 km/h, 0 C at 500 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Dial back your terrain choices if you are seeing more than 30 cm of new snow.
  • Seek out sheltered terrain where new snow hasn't been wind-affected.

Avalanche Problems

Storm Slabs

Snow that fell Tuesday night continues to settle. Deepest and most reactive slabs can be found in wind-loaded terrain.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Likely - Very Likely

Expected Size: 1 - 2