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Avalanche Forecast

Archived

Apr 12th, 2023–Apr 13th, 2023

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.
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, Tetrahedron.

Continually assess conditions as you move through terrain. Rider triggerable wind slabs will still be found on lee and cross loaded features.

Confidence

Moderate

Avalanche Summary

NWe recently recieved a report of deep slab avalanches that released during the atmospheric river event over the weekend.

No recent avalanches have been reported but observations are becoming increasingly limited.

Snowpack Summary

Below 1000 meters, a thick crust exists on or near the surface. Above this elevation, 20-50 cm of dry snow has accumulated above a melt-freeze crust that extends to mountain tops. This previous storm snow has been blown into wind slab on west through east aspects. Below this is a well settled snowpack.

Weather Summary

Wednesday Night

Increasing cloud with the possibility of light flurries bringing trace amounts of new snow. Light westerly winds and freezing levels falling to 800 m.

Thursday

Mostly cloudy with the possibility of flurries bringing trace amounts of new snow. Light southwest winds and a high of -2°C at 1200 m.

Friday

Mostly sunny with the possibility of light flurries bringing trace amounts of new snow. Light southerly winds and a high of -2°C at 1200 m.

Saturday

Stormy with up to 20 cm of new snow expected. Moderate to strong southerly winds and freezing levels rising to 1300 m with the snowline around 1000 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Be especially cautious as you transition into wind affected terrain.
  • Use ridges or ribs to avoid areas of wind loaded snow.
  • Be alert to conditions that change with aspect and elevation.
  • Minimize your exposure time below cornices.

Problems

Wind Slabs

Wind Slab avalanches are the release of a cohesive layer of snow (a slab) formed by the wind. Wind typically transports snow from the upwind sides of terrain features and deposits snow on the downwind side. Wind slabs are often smooth and rounded and sometimes sound hollow, and can range from soft to hard. Wind 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.