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Avalanche Forecast

Archived

Feb 25th, 2024–Feb 25th, 2024

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

Regions

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

Heightened avalanche conditions exist in the alpine where recent snow and strong winds have built fresh wind slabs.

Confidence

Moderate

Avalanche Summary

No new avalanches have been reported on Sunday, however, we expect users who head into the backcountry on Monday will see evidence of a small natural wind slab avalanche cycle that occurred during the storm.

Snowpack Summary

5 to 15 cm of snow blankets the coast mountains. In most areas, the storm snow overlies a widespread crust. At the highest elevations, buries old wind affected snow surfaces.

The mid and lower snowpack are generally well consolidated, and likely still moist from the recent rain. Conditions remain rugged at lower elevations, with a shallow snowpack.

Weather Summary

Sunday Night

Cloudy with 0 to 2 cm of snow. 40 to 60 km/h west ridgetop wind. Treeline temperature -7 °C. Freezing levels drop to 500 m.

Monday

A mix of sun and cloud. 30 to 40 km/h northwest ridgetop wind. Treeline temperature -8 °C. Freezing levels hover around 500 m.

Tuesday

Increasing clouds with 1 to 2 cm of snow. 40 to 50 km/h northwest ridgetop wind. Treeline temperature -10 °C. Freezing levels hover around 500 m.

Wednesday

Cloudy with snow switching to rain, accumulation 30 to 40 cm above the rain-snow line. Freezing level 500 m rising to 1500 m. 80 to 100 km/h southwest ridgetop wind. Treeline temperature -3 °C. 

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Be especially cautious as you transition into wind affected terrain.
  • Wind slabs may be poorly bonded to the underlying crust.
  • Potential for wide propagation exists, fresh slabs may rest on surface hoar, facets and/or crust.

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.