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Avalanche Forecast

Archived

Apr 12th, 2023–Apr 13th, 2023

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

Regions

South Coast Inland, Birkenhead, Duffey, South Chilcotin, Stein, Taseko.

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

Over the past few days several natural and skier triggered storm and wind slabs were reported. These avalanches were up to size 3 and took place in the alpine on all aspects.

Snowpack Summary

Around 30 cm of recent storm snow overlies a crust on solar aspects and all aspects below 2000 m. This recent snow has also formed wind slabs on west through east aspects at treeline and above.

A layer of facets or a crust from early April can be found down up to 60 cm at treeline and above.

The base of the snowpack remains faceted and weak. Avalanche activity has not been observed on this layer recently but concern remains for shallow rocky snowpack areas.

Weather Summary

Wednesday Night

Mostly clear with no new snow expected. Light southwest winds and a low of -10°C at 1800 m.

Thursday

Mostly cloudy with the possibility of flurries bringing trace amounts of new snow. Light southwest winds and a high of -3°C at 1800 m.

Friday

Clearing skies throughout the day with the possibility of light flurries bringing trace amounts of new snow in the morning. Light southwest winds and freezing levels rising to 1700 m.

Saturday

Mostly cloudy with flurries bringing up to 5 cm of new snow. Moderate to strong southerly winds and freezing levels rising to 1700 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.
  • 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.