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Avalanche Forecast

Archived

Feb 13th, 2025–Feb 14th, 2025

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

Regions

Kitimat, Nass, Rupert, Seven Sisters, Shames, Howson.

Although the likelihood of triggering a persistent slab avalanche is decreasing, it is still possible in steep, rocky, and wind effected areas in the alpine.

Confidence

High

Avalanche Summary

There has been no avalanche activity reported in the past few days.

Snowpack Summary

Previous strong to extreme winds have scoured exposed terrain on all aspects at alpine and treeline. Ongoing cold temperatures have softened the surface of wind affected terrain in many areas. In sheltered terrain 10 to 40 cm of faceted snow overlies a surface hoar layer from late January.

Another layer of surface hoar was buried near the middle of January and can be found 30 to 60 cm deep.

A layer of facets on top of a crust from early December is buried 100 to 200 cm deep. This layer is generally not a concern in this region.

Weather Summary

Thursday Night

Mostly clear skies. 40 to 70 km/h east ridgetop wind. Treeline temperature -16 °C.

Friday

Mix of sun and clouds. 30 to 60 km/h east ridgetop wind. Treeline temperature -16 °C.

Saturday

Mix of sun and clouds. 0 to 10km/h east ridgetop wind. Treeline temperature -10°C.

Sunday

Cloudy. 1 to 3cm of snow. 0 to 10km/h north ridgetop wind. Treeline temperature -10°C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Avoid steep, rocky, and wind-affected areas where triggering slabs is more likely.
  • Seek out sheltered terrain where new snow hasn't been affected by wind.

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.