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Avalanche Forecast

Mar 1st, 2024–Mar 2nd, 2024
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
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
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
2: Moderate
The avalanche danger rating below treeline will be moderate

A persistent slab is within the range of rider triggering. The best way to manage this problem is to stick to conservative terrain.

Confidence

Moderate

Avalanche Summary

There is no recent activity to report, however in the neighbouring region, many natural and skier triggered persistent slab avalanches occurred on the facets above the early-February melt-freeze crust described in the Snowpack Summary.

Riders could trigger similar avalanches in the coming days. Persistent slab problems take a while to heal so giving them time is warranted.

Snowpack Summary

30 to 50 cm of recent snow sits on a variety of layers that it may not bond well to, including surface hoar in wind-sheltered terrain, weak facets, or a hard melt-freeze crust on sun-exposed south and west-facing slopes. The wind has likely formed thicker deposits in lee terrain features near ridges.

A thick and hard widespread crust that formed in early February is buried about 60 to 80 cm deep. This crust may have a layer of facets above it, which makes it a troublesome avalanche layer.

The remainder of the snowpack is settled.

Weather Summary

Friday Night

Mostly cloudy with clear breaks and isolated flurries, 1 to 2 cm accumulation. 15 to 30 km/h east ridgetop wind. Treeline temperature -18 °C.

Saturday

Mostly cloudy with sunny breaks. 20 to 40 km/h southeast ridgetop wind. Treeline temperature -15 °C.

Sunday

Mix of sun and cloud. 10 to 20 km/h east ridgetop wind. Treeline temperature -19 °C.

Monday

Mix of sun and cloud. 10 to 20 km/h northwest ridgetop wind. Treeline temperature -21 °C.

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 conservative route selection and resist venturing out into complex terrain.
  • Potential for wide propagation exists, fresh slabs may rest on surface hoar, facets and/or crust.
  • If triggered, wind slabs avalanches may step down to deeper layers resulting in larger avalanches.

Avalanche Problems

Wind Slabs

Recent new snow has been redistributed by wind blowing from a variety of directions. Smaller slabs may easily step down and trigger larger, more destructive avalanches.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Possible - Likely

Expected Size: 1 - 2

Persistent Slabs

A weak layer of facets and/or surface hoar may rest above a hard-melt freeze crust that formed early February. This layer remains in the depth for human triggering .

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Possible - Likely

Expected Size: 1.5 - 3