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Avalanche Forecast

Archived

Mar 14th, 2025–Mar 15th, 2025

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.

Buried weak layers remain rider-triggerable.

Use extra caution on north-facing slopes at ridgeline.

Confidence

Moderate

Avalanche Summary

There has been no new avalanche activity reported in the previous few days. If you do observe an avalanche, consider posting a MIN.

Snowpack Summary

10-30 cm of recent new snow has buried widespread layer of surface hoar crystals, which sit over a crust on solar aspects and low elevations.

A layer of facets, surface hoar and/or a crust buried mid February is 30 to 50 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

Friday Night

Mostly cloudy. 20 to 40 km/h southeast ridgetop wind. Treeline temperature -9 °C.

Saturday

Mostly cloudy with 0 to 4 cm of snow. 30 to 60 km/h east ridgetop wind. Treeline temperature -11 °C.

Sunday

A mix of sun and cloud. 10 to 30 km/h southwest wind. Treeline temperature -6 °C.

Monday

A mix of sun and cloud. 25 to 45 km/h southwest wind. Treeline temperature -3 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Be careful as you transition into wind-affected terrain.
  • Be aware of the potential for large avalanches due to buried weak layers.
  • If triggered, wind slabs avalanches may step down to deeper layers resulting in larger 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.

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.