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Avalanche Forecast

Archived

Feb 24th, 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 avalanches unlikely, human triggered possible.
Treeline
Natural avalanches unlikely.
Below Treeline
Natural avalanches unlikely.

Regions

Microwave-Sinclair, North Bulkley, South Bulkley, South Bulkley, South Bulkley, Telkwa.

Watch for fresh, reactive wind slabs forming in lee terrain features at upper elevations.

Confidence

Moderate

Avalanche Summary

No new avalanche observations since Thursday when a small (size 1) wind slab was triggered by a sledder in the alpine.

Snowpack Summary

Small amounts of new snow falls over faceted and wind-affected surfaces. At upper elevations, west winds are redistributing the new snow into fresh wind slabs in leeward terrain features. Older, hard wind slabs sit over weak faceted crystals and a crust, 20 to 30 cm below the surface.

The mid and lower snowpack is generally well-bonded and strong.

Weather Summary

Saturday night

Cloudy with up to 5 cm of snow. 40 to 60 km/h west ridgetop wind. Treeline temperature -5 °C.

Sunday

Mostly cloudy with around 5 cm of snow. 30 to 50 km/h west ridgetop wind. Treeline temperature -4 °C.

Monday

Around 5 cm overnight then clearing to a mix of sun and cloud. 10 to 20 km/h northeast ridgetop wind. Treeline temperature -12 °C.

Tuesday

A mix of sun and cloud. 20 to 40 km/h south ridgetop wind. Treeline temperature -16 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Be careful with wind slabs, especially in steep, unsupported and/or convex terrain features.
  • 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.