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Avalanche Forecast

Archived

Feb 25th, 2024–Feb 26th, 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, human triggered possible.
Below Treeline
Natural avalanches unlikely.

Regions

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

Watch for fresh wind slabs on a variety of aspects at upper elevations.

Confidence

Moderate

Avalanche Summary

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

Snowpack Summary

10-30 cm of new snow has been redistributed by wind at upper elevations. It sits over weak, faceted snow in most areas and may be slow to bond.

Another layer of weak, faceted crystals and a crust are buried 20 to 50 cm deep.

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

Weather Summary

An upslope effect associated with the passing front will bring snowfall to the eastern slopes tonight.

Sunday night

5 to 15 cm of snow. 30 to 40 km/h ridgetop wind switching from west to east. Treeline temperature -14 °C.

Monday

A mix of sun and cloud. 10 to 20 km/h northeast ridgetop wind. Treeline temperature -14 °C.

Tuesday

Mostly cloudy with scattered flurries bringing a trace of snow. 30 to 50 km/h south ridgetop wind. Treeline temperature -20 °C.

Wednesday

Mostly cloudy. 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

  • Watch for newly formed and reactive wind slabs as you transition into wind affected terrain.
  • Recent wind has varied in direction so watch for wind slabs on all aspects.
  • Watch for signs of instability like whumpfing, hollow sounds, shooting cracks or recent avalanches.

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.