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Avalanche Forecast

Archived

Feb 21st, 2023–Feb 22nd, 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.
Below Treeline
Natural avalanches unlikely.
Alpine
Natural avalanches unlikely.
Treeline
Natural avalanches unlikely.
Below Treeline
Natural avalanches unlikely.

Regions

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

Watch for heightened avalanche conditions at upper elevations where unstable slabs may be found on wind-loaded slopes.

Confidence

High

Avalanche Summary

There are no new avalanches to report in the past few days.

Snowpack Summary

New snow at upper elevations from the past several days has accumulated over a variety of old surfaces including wind slabs in the alpine and a breakable freezing rain crust between 1100 m and 1600 m.

The mid and lower snowpack is well-settled, strong, and consolidated.

Snowpack depths are reaching 250 cm at treeline.

Weather Summary

Tuesday Night

Mainly cloudy with flurries, accumulation 3-5cm. Light east wind. Treeline temperature -5 °C. Freezing level 400 m.

Wednesday

Mainly cloudy. Light to moderate northwest wind. Treeline temperature -10 °C.

Thursday

Mix of sun and cloud. Moderate east wind. Treeline temperature -12 °C.

Friday

Mix of sun and cloud. Light northwest wind. Treeline temperature -13 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Carefully evaluate steep lines for wind slabs.
  • Wind slabs are most reactive during their formation.

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.