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Avalanche Forecast

Archived

Mar 24th, 2025–Mar 25th, 2025

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

Regions

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

Use caution as you travel through wind-affected terrain.

Human-triggered avalanches are possible.

Confidence

High

Avalanche Summary

On Saturday, a group of skiers remotely triggered an avalanche in the Seaton area. More details are available in this MIN.

Additionally, an avalanche was reported in the Crater Lake area of Hudson Bay Mountain on Saturday. Check out the MIN here.

Snowpack Summary

Light snow and southerly winds continue to redistribute recent snowfall. This snow is accumulating on a layer of surface hoar buried 25 to 55 cm deep. This layer of surface hoar is present in the alpine and on aspects that are not exposed to sunlight.

Another layer of facets, surface hoar and/or a crust buried in mid-February is 40 to 80 cm below the snow surface and has been reactive in snowpack tests.

Deeper in the snowpack, a weak layer of facets and a crust from early December can be found. This layer appears to be dormant but is still worth keeping in mind in thin snowpack areas in the alpine.

Weather Summary

Monday Night

Mostly cloudy. 30 to 40 km/h southwest ridgetop wind. Treeline temperature -2 °C. Freezing level 1200 m.

Tuesday

Cloudy with 1 to 3 cm of snow. 20 to 30 km/h southeast ridgetop wind. Treeline temperature 0 °C. Freezing levels reach 1400 m.

Wednesday

Cloudy with up to 8 cm of snow. 30 to 40 km/h southwest winds at ridgetop. Treeline temperature 0 °C. Freezing levels reach 1500 m.

Thursday

Cloud with up to 10cm of snow. 30 to 40 km/h southwest winds at ridgetop. Treeline temperature 0 °C. Freezing levels reach 1600 m.

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.
  • Avoid shallow snowpack areas, rocky outcrops, and steep terrain where triggering is most likely.
  • Be aware of the potential for large avalanches due to buried weak layers.

Problems

Persistent Slabs

Persistent Slab avalanches are the release of a cohesive layer of snow (a slab) in the middle to upper snowpack, when the bond to an underlying persistent weak layer breaks. Persistent layers include: surface hoar, depth hoar, near-surface facets, or faceted snow. Persistent weak layers can continue to produce avalanches for days, weeks or even months, making them especially dangerous and tricky. As additional snow and wind events build a thicker slab on top of the persistent weak layer, this avalanche problem may develop into a Deep Persistent Slab.

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.