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Avalanche Forecast

Archived

Feb 12th, 2024–Feb 13th, 2024

Alpine
Natural avalanches unlikely.
Treeline
Natural avalanches unlikely.
Below Treeline
Natural avalanches unlikely.
Alpine
Natural avalanches unlikely.
Treeline
Natural avalanches unlikely.
Below Treeline
Natural avalanches unlikely.
Alpine
Natural avalanches unlikely.
Treeline
Natural avalanches unlikely.
Below Treeline
Natural avalanches unlikely.

Regions

Northwest Inland, Howson, Kispiox, Microwave-Sinclair, North Bulkley, South Bulkley, South Bulkley, South Bulkley, Telkwa.

Assess steep lines at upper elevations for wind slab.

Wind slabs may be more reactive where they overlie facets or surface hoar.

Confidence

High

Avalanche Summary

Several size 1 slab avalanches were triggered by riders on Saturday, 10-30 cm deep, in the alpine and treeline.

If you go into the backcountry, consider submitting a MIN report.

Snowpack Summary

5 to 10 cm of recent storm snow has been redistributed into wind slab by westerly winds. In sheltered terrain this new snow could overlie a layer of surface hoar, Below treeline it overlies a melt-freeze crust.

Weather Summary

Monday Night

Mostly clear with trace amounts of new snow possible, northwest alpine wind 30 to 50 km/h, temperature inversion with -4°C at 1500 m and colder temperatures below.

Tuesday

Mostly clear skies  with no new snow expected, northeast alpine wind 15 to 40 km/h, treeline temperature -5°C.

Wednesday

Clear skies with no new snow expected, east alpine wind 15 to 35 km/h, treeline temperature -7°C.

Thursday

Clear skies with no new snow expected, east alpine wind 25 to 60 km/h, treeline temperature -7°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 wind-affected.
  • Avoid areas where the snow feels stiff and/or slabby.
  • Even a small avalanche can be harmful if it pushes you into an obstacle or a terrain trap.

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.