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Avalanche Forecast

Archived

Apr 8th, 2023–Apr 9th, 2023

Alpine
Natural and human triggered avalanches likely.
Treeline
Natural and human triggered avalanches likely.
Below Treeline
Natural avalanches possible, human triggered probable.
Alpine
Natural avalanches possible, human triggered probable.
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, human triggered possible.

Regions

South Coast, Powell River, North Shore, Sasquatch, Sasquatch, Sky Pilot, Tetrahedron.

Avoid avalanche terrain. New snow and wind will likely result in a natural avalanche cycle.

Confidence

High

Avalanche Summary

We suspect that a natural avalanche cycle will take place on Sunday.

Snowpack Summary

Another  significant storm will further saturate the snowpack at lower elevations. At higher elevations new snow accompanied by southerly winds will form storm and wind slabs.

A thick crust exists below recent storm snow at higher elevations, below this the remainder of the snowpack is well settled.

Weather Summary

Saturday Night

Stormy with up to 35 cm of new snow expected at higher elevations. Strong southerly winds and freezing levels falling to 1400 m.

Sunday

Stormy with up to 70 cm of new snow expected at higher elevations. Strong southerly winds and freezing levels rising to 1700 m with the snowline around 1000 m.

Monday

Mostly cloudy with flurries bringing up to 5 cm of new snow at higher elevations. Light to moderate southerly winds and freezing levels rising to 1000 m.

Tuesday

Mostly cloudy with up to 20 cm of new snow possible at higher elevations. Moderate southwest winds and freezing levels rising to 1000 m.

 

 

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Avoid all avalanche terrain during periods of heavy snowfall.
  • Be careful to keep storm day fever from luring you out into bigger terrain features.
  • The more the snow feels like a slurpy, the more likely loose wet avalanches will become.

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.

Loose Wet

Loose Wet avalanches are the release of wet unconsolidated snow or slush. These avalanches typically occur within layers of wet snow near the surface of the snowpack, but they may quickly gouge into lower snowpack layers. Like Loose Dry Avalanches, they start at a point and entrain snow as they move downhill, forming a fan-shaped avalanche. Other names for loose-wet avalanches include point-release avalanches or sluffs. Loose Wet avalanches can trigger slab avalanches that break into deeper snow layers.