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Avalanche Forecast

Archived

Jan 23rd, 2025–Jan 24th, 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.
Treeline
Natural avalanches unlikely.
Below Treeline
Natural avalanches unlikely.

Regions

North Columbia, South Columbia, Blue River, Clearwater, Premier, Clemina, Esplanade, Jordan, North Monashee, North Selkirk, Robson, Badshot-Battle, Central Selkirk, Goat, Gold, Kokanee, Retallack, Valhalla, Whatshan.

The main concern is wind slabs, especially in areas where they overlie weak surface hoar.

Avoid areas where the snow feels stiff or slabby.

Confidence

Moderate

Avalanche Summary

Human and naturally triggered wind slabs (size 1 to 2) continue to occur throughout the region, mainly on wind-loaded alpine slopes with a few reported at treeline as well. Notably, a few of these slabs failed on a buried layer of surface hoar down 30 to 40 cm.

Due to wind slabs overlying weak surface hoar in some areas, we expect triggering of these slabs to remain possible for longer than usual.

Snowpack Summary

10 to 20 cm of low-density new snow has fallen over the last few days. This snow has buried a variety of surfaces including sun crust, surface hoar, and facets.

The snow surface is likely wind-affected in most open areas at all elevations.

A secondary layer of weak surface hoar from early January is buried 30 to 50 cm. This layer has most recently only been reactive where wind slabs have formed above it.

A crust/facet/surface hoar layer from early December may be found 90 to 160 cm deep. Avalanche activity on this layer has tapered in recent weeks.

Check out this great MIN that describes the snowpack!

Weather Summary

Thursday Night

Mainly cloudy with isolated flurries, accumulations of 0 to 3 cm. 20 to 40 km/h northwest ridgetop wind. Treeline high temperature -12 °C.

Friday

A mix of sun and cloud. 20 to 45 km/h northwest ridgetop wind. Treeline high temperature -13 °C.

Saturday

A mix of sun and cloud. 20 to 30 km/h northwest ridgetop wind. Treeline high temperature -14 °C.

Sunday

Sunny. 15 to 25 km/h northwest ridgetop wind. Treeline high temperature -9 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Seek out sheltered terrain where new snow hasn't been affected by wind.
  • Avoid areas where the snow feels stiff and/or slabby.
  • Back off if you encounter whumpfing, hollow sounds, or shooting cracks.
  • Be careful as you transition into wind-affected terrain.

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.