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Avalanche Forecast

Archived

Dec 31st, 2022–Jan 1st, 2023

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

Regions

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

carefully assess the bond between storm snow and the underlying crust. Natural avalanche activity has tapered off but human triggering is still possible.

Confidence

Moderate

Avalanche Summary

On Friday one size 1.5 skier remote was reported. This avalanche released on a steep northeast slope at 1400m at the interface between the storm snow and the crust below. Several other avalanches like this one were reported to have occurred on Friday. triggers included ski cuts and naturals. Check out this MIN from Mt Washington.

Snowpack Summary

30 to 70cm of recent storm snow has likely been redistributed into wind slabs on north and east aspects and cross loading on others. This recent snow overlies a crust above 1000m. A thin layer of facets could exist at this interface. Below 1000m the snow surface could still be moist.

Once again terrain below treeline has limited or no coverage.

Weather Summary

Saturday Night

Cloudy with the possibility of light flurries bringing trace amounts of new snow to treeline and above. Light variable winds and freezing level around 900m.

Sunday

Mostly cloudy with the possibility of light flurries bringing trace amounts of new snow. Light to moderate southeast winds and freezing levels around 900m.

Monday

cloudy with light flurries bringing trace amounts of new snow. Moderate southeast winds and freezing levels falling to around 800m.

Tuesday

Stormy with 5 to 15cm of new snow. Moderate south wind and freezing levels around 800m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Continue to make conservative terrain choices while the storm snow settles and stabilizes.
  • Be alert to conditions that change with aspect and elevation.
  • Closely monitor how the new snow is bonding to the crust.

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.