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Avalanche Forecast

Archived

Dec 7th, 2022–Dec 8th, 2022

Alpine
Natural avalanches possible, human triggered probable.
Treeline
Natural avalanches possible, human triggered probable.
Below Treeline
Natural avalanches unlikely.
Alpine
Natural avalanches unlikely, human triggered possible.
Treeline
Natural avalanches unlikely, human triggered possible.
Below Treeline
Natural avalanches unlikely.
Alpine
Natural avalanches possible, human triggered probable.
Treeline
Natural avalanches possible, human triggered probable.
Below Treeline
Natural avalanches unlikely.

Regions

Vancouver Island, East Island, North Island, South Island, West Island.

Overnight snow and wind have formed fresh and reactive storm slabs at upper elevations.

Confidence

Moderate

Avalanche Summary

No recent avalanches have been reported, but field observations are limited this time of year.

If you head into the backcountry please submit a MIN report! They are extremely helpful to us in the early season when snowpack information is limited.

Snowpack Summary

New snow buries a variety of wind-affected surfaces and possibly a surface crust on south aspects and low elevations,

80 to 100 cm of snow can be found in the alpine, with wind-loaded areas up to 150 cm. Many lower elevation areas remain below threshold for avalanches.

Weather Summary

Wednesday Night

5-15 cm new snow in most areas, up to 30 cm in coastal areas. Strong to extreme southerly ridgetop winds. Alpine temperature low of -2. Freezing level around 800 m.

Thursday

Isolated flurries bringing up to 5 cm new snow. Moderate southwesterly ridgetop winds. Alpine temperature high of -5. Freezing level around 700m.

Friday

Cloudy with flurries bringing up to 5 cm new snow. Moderate southerly ridgetop winds. Alpine temperature high of -5. Freezing level around 500m.

Saturday

10-20 cm new snow. Light to moderate southerly ridgetop winds. Alpine temperature high of -5. Freezing level around 500m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Storm snow and wind is forming touchy slabs. Use caution in lee areas in the alpine and treeline.
  • Seek out sheltered terrain where new snow hasn't been wind-affected.

Problems

Storm Slabs

Storm Slab avalanches are the release of a cohesive layer (a slab) of new snow that breaks within new snow or on the old snow surface. Storm-slabs typically last between a few hours and few days (following snowfall). Storm-slabs that form over a persistent weak layer (surface hoar, depth hoar, or near-surface facets) may be termed Persistent Slabs or may develop into Persistent Slabs.