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Archived

Avalanche Forecast

Dec 3rd, 2022–Dec 4th, 2022
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
1: Low
The avalanche danger rating in the alpine will be low
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: East Island, North Island, South Island, Vancouver Island, West Island.

Recent snowfall and above freezing tempertures will make avalanches possible at upper elevations.

Confidence

Moderate

Avalanche Summary

No recent avalanches have been reported, but observations are limited this time of year. If you do head into the backcountry please submit a MIN report!

Snowpack Summary

Friday's storm brought 20 to 30 cm of fresh snow to the south and central parts of the island and less than 15 cm to northern parts. This adds to the previous storm to bring recent snowfall up to 30 to 60 cm. Above freezing temperatures over the weekend will promote settlement of this snow and cause the surface to become moist or wet.

80 to 100 cm of snow can be found in the alpine, with wind-loaded areas up to 150 cm. Every storm brings the snowpack closer to the threshold for avalanches, however some areas at treeline and most areas below treeline have yet to overcome ground roughness.

Weather Summary

Saturday night

Clear skies, no precipitation, 30 km/h wind from the northeast, above freezing temperatures between 1000 and 2000 m.

Sunday

Clear skies, no precipitation, 20 km/h wind from the northeast, freezing level climbs to 2200 m with treeline temperatures reaching +3 °C.

Monday

Mix of sun and cloud, no precipitation, 20 to 30 km/h wind from the northwest, treeline temperatures around -3 °C.

Tuesday

Mostly cloudy, isolated flurries with trace amounts of snow, 40 to 60 km/h wind from the northwest, treeline temperatures around -3 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Back off slopes as the surface becomes moist or wet with rising temperatures.
  • Watch for signs of slab formation throughout the day.
  • Make observations and assess conditions continually as you travel.

Avalanche Problems

Storm Slabs

With 20 to 30 cm of fresh snow from Friday night, human-triggered slab avalanches will be possible on specific slopes. Watch for slab formation on steep, convex, or wind-loaded slopes.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1 - 2

Loose Wet

Above freezing temperatures will likely cause small wet loose avalanches, especially sun-exposed slopes.

Aspects: East, South East, South, South West, West.

Elevations: Alpine, Treeline.

Likelihood: Likely

Expected Size: 1 - 1.5