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Archived

Avalanche Forecast

Feb 25th, 2021–Feb 26th, 2021
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
2: Moderate
The avalanche danger rating at treeline will be moderate
Below Treeline
2: Moderate
The avalanche danger rating below treeline will be moderate
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: South Coast.

Storm slabs sitting on a hard rain crust may continue to be reactive to human triggers; especially in wind affected terrain.

Confidence

High -

Weather Forecast

  

THURSDAY NIGHT: Cloudy with flurries; 3-5 cm. / Strong, northwest ridgetop wind / Alpine low -4 / Freezing level 600 m.

FRIDAY: Mix of sun and cloud / Light, northwest ridgetop wind / Alpine high 1 / Freezing level 700 m.

SATURDAY: Mix of sun and cloud / Light, northwest ridgetop wind / Alpine high 0 / Freezing level 600 m.

SUNDAY: Cloudy with flurries; 5-10 cm. / Strong, west ridgetop wind / Alpine high 2 / Freezing level 1000 m.

Avalanche Summary

On Thursday, skier triggered storm slab avalanches up to size 2 were reported on all aspects. The new snow is sitting on a hard rain crust and may remain reactive to human triggers; especially in wind affected terrain.

Snowpack Summary

15-20 cm of new snow and strong southwesterly winds have formed fresh storm slabs sitting on top of a hard rain crust that caps the snowpack up to the tops of the North Shore mountains. These storm slabs are expected to be most reactive in wind affected terran. 

The snowpack below the rain crust is well settled and strong in most areas.

Terrain and Travel

  • Expect slab conditions to change drastically as you move into wind exposed terrain.
  • Closely monitor how the new snow is bonding to the crust.
  • Keep in mind the crust offers an excellent bed surface for avalanches.

Avalanche Problems

Storm Slabs

Storm slabs sitting on a hard rain crust may continue to be reactive to human triggers; especially in wind affected terrain.

Aspects: All aspects.

Elevations: All elevations.

Likelihood: Possible - Likely

Expected Size: 1 - 2