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Avalanche Forecast

Archived

Jan 19th, 2024–Jan 20th, 2024

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

Regions

Northwest Coastal, Boundary, Kitimat, Nass, Rupert, Seven Sisters, Shames, Stewart, Howson, Ningunsaw, Ningunsaw, Ningunsaw.

New snow and strong winds will increase the avalanche hazard in the alpine and exposed treeline. Wind slabs avalanches are happening in your region.

Confidence

Moderate

Avalanche Summary

On Thursday, numerous reports of natural wind slab avalanche were reported up to size 2.

We expect, with the currently forecasted snow and wind that there will be natural avalanches occurring Saturday and Sunday.

Snowpack Summary

We expect up to 20 cm of new snow by the end of day Saturday. The moderate- strong winds and new snow will continue building new wind slabs over previous faceted wind slabs or previous hard faceted surfaces.

In sheltered areas treeline and below a layer of surface hoar can be found down 30 cm and the December crust is decomposing down 60 cm.

The rest of the snowpack is well settled.

Weather Summary

Friday Night

Cloudy, up to 10 cm of new snow, southwest alpine wind up to 40 km/h, treeline temperature -8 °C.

Saturday

Cloudy, up to 8 cm of new snow, southwest alpine wind up to 50 km/h, treeline temperature -5 °C with pockets of warm air aloft forming overnight.

Sunday

Cloudy, up to 5 cm during the day, southwest alpine wind up to 30 km/h, treeline temperature -5 °C.

Monday

Cloudy, trace of snow overnight and a trace throughout the day, southwest alpine wind up to 40 km/h, treeline temperature -5°C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Seek out wind sheltered terrain below treeline where you can avoid wind slabs and find great riding.
  • Keep your guard up at lower elevations. Wind slab formation has been extensive.
  • Recent wind has varied in direction so watch for wind slabs on all aspects.

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.