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Avalanche Forecast

Archived

Apr 9th, 2023–Apr 10th, 2023

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 unlikely, human triggered possible.
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, human triggered possible.

Regions

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

Carefully assess snow conditions as you move through terrain. Storm and wind slab is likely where recent precipitation fell as snow. The largest and most reactive slabs will be found on lee and cross loaded features.

Confidence

Moderate

Avalanche Summary

We suspect that a natural avalanche cycle took place in the region on Sunday but as of this writing reports are not yet in.

Snowpack Summary

Below 1000 m a rain saturated snowpack is likely to be found. Above this elevation dense but dry snow is more likely. At treeline and above this storm snow has been blown into wind slabs on west through east aspects. Below the new snow is a well settled snowpack.

Weather Summary

Sunday Night

Cloudy with up to 5 cm of new snow expected. Moderate southwest winds decreasing to light and a low of -2°C at 1200 m.

Monday

Mostly cloudy with the possibility of flurries bringing trace amounts of new snow. Light to moderate southwest winds and a freezing levels rising to 1200 m.

Tuesday

Mostly cloudy with up to 20 cm of new snow expected. Moderate southerly winds and freezing level rising to 900 m with snowline around 600 m.

Wednesday

A mix of sun and cloud with the possibility of light flurries bringing up to 5 cm of new snow. Light westerly winds and freezing level rising to 900 m.

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.
  • Avoid lee and cross-loaded terrain.

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.