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Archived

Avalanche Forecast

Jan 12th, 2025–Jan 13th, 2025
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
Treeline
2: Moderate
The avalanche danger rating at treeline will be moderate
Below Treeline
1: Low
The avalanche danger rating below treeline will be low
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
Treeline
2: Moderate
The avalanche danger rating at treeline will be moderate
Below Treeline
1: Low
The avalanche danger rating below treeline will be low
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
Treeline
2: Moderate
The avalanche danger rating at treeline will be moderate
Below Treeline
1: Low
The avalanche danger rating below treeline will be low

Regions: Blue River, Central Selkirk, Clearwater, Clemina, Esplanade, Gold, Jordan, North Columbia, North Monashee, North Selkirk, Premier, South Columbia, Valhalla, Whatshan.

Wind slabs may remain triggerable longer than normal due to weak surface hoar underneath.

Confidence

Moderate

Avalanche Summary

On Saturday there were numerous, small accidentally triggered wind slab avalanches. Surface hoar was noted as the failure layer.

Recently, there were reports of glide cracks opening up and large glide slab avalanches. Notably more than usual.

Snowpack Summary

Saturday's moderate northwest wind has affected the surface in open areas at all elevations.

In sheltered terrain, 30 to 40 cm of settling snow sits on a layer of weak, feathery surface hoar crystals, possibly even into the alpine. On sunny slopes, there may be a crust as well.

A crust/facet/surface hoar layer buried in early December may be found 90 to 160 cm deep.

Weather Summary

Sunday Night

Mostly cloudy. 20 to 40 km/h northwest ridgetop wind. Treeline temperature -8 °C.

Monday

A mix of sun and clouds. 20 to 50 km/h northwest ridgetop wind. Treeline temperature -8 °C.

Tuesday

A mix of sun and cloud. 10 to 20 km/h west ridgetop wind. Possible temperature inversion. Treeline temperature -5 °C.

Wednesday

A mix of sun and cloud with 1 cm of snow. 20 to 30 km/h southwest ridgetop wind. Possible temperature inversion. Treeline temperature -5 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Be alert to conditions that change with elevation, aspect, and exposure to wind.
  • Avoid areas where the snow feels stiff and/or slabby.
  • Be aware of the potential for remote triggering and large avalanches due to buried surface hoar.

Avalanche Problems

Wind Slabs

Rider-triggerable wind slabs may be found below ridgetops and in cross-loaded terrain. A layer of surface hoar buried in early January may be reaching a tipping point as the load above it increases, which could lead to wide propagations.

Aspects: North, North East, East, South East, South.

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1 - 2.5