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Archived

Avalanche Forecast

Feb 10th, 2020–Feb 11th, 2020
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
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
2: Moderate
The avalanche danger rating below treeline will be moderate

Regions: South Coast.

Watch for wind slabs, particularly on southeast facing slopes as the wind shifts around to the northwest.

Confidence

Moderate - Uncertainty is due to the speed, direction, or duration of the wind and its effect on the snowpack.

Weather Forecast

Monday night: Dry with moderate northwesterly winds.

Tuesday: Flurries. Moderate northwesterly winds. Freezing level around 1000 m.

Wednesday: Dry with some sunny breaks. Light northwesterly winds. Freezing level around 1000 m.

Thursday: 10-15 cm new snow. Moderate southwesterly winds. Freezing level around 900 m.

Avalanche Summary

A small skier triggered slab avalanche was reported on Saturday (see this MIN report). Similar avalanches might be expected under the current conditions in wind-affected areas.

Snowpack Summary

Winds are expected to shift to the northwest quadrant, which is likely to build wind slabs on southeast aspects. Warmer temperatures have densified the upper snow pack. There is around 30 recent new snow that sits on a thick rain crust. The snowpack below the crust consists of moist to wet snow and is well settled. Snowpack depths are suspected to be in the range of 150-250 cm around the peaks of the north shore mountains (1400 m), tapering quickly with elevation to almost nothing below 1000 m.

Terrain and Travel

  • Approach lee and cross-loaded slopes with caution.
  • Avoid areas where the snow feels stiff and/or slabby.

Avalanche Problems

Wind Slabs

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

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1 - 2