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Avalanche Forecast

Archived

Apr 25th, 2024–Apr 26th, 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, human triggered possible.
Treeline
Natural avalanches unlikely.
Below Treeline
Natural avalanches unlikely.

Regions

Northwest Coastal, Northwest Inland, Boundary, Kitimat, Nass, Rupert, Seven Sisters, Shames, Stewart, Howson, Kispiox, Microwave-Sinclair, Ningunsaw, Ningunsaw, Ningunsaw, North Bulkley, South Bulkley, South Bulkley, South Bulkley, Telkwa.

Small avalanches are possible on wind-loaded and sun-exposed slopes.

Confidence

Moderate

Avalanche Summary

Recent reports indicate small wet loose avalanches on sun-exposed slopes (size 1 to 1.5).

Small wind slabs possibly formed on Wednesday.

Snowpack Summary

Recent storms delivered 15 to 25 cm of snow to higher elevations and possibly formed wind slabs in lee terrain.

Surfaces below 1500 m are experiencing daily melt-freeze cycles.

Large cornices are present and could weaken with daytime warming.

Weather Summary

Thursday Night

Mostly clear. 15 km/h southeast ridgetop wind. Treeline temperature 0 °C. Freezing level 1500 m.

Friday

Mostly sunny. 10 km/h southeast ridgetop wind. Treeline temperature +2 °C. Freezing level 1800 m.

Saturday

Increasing cloud with 1 to 3 cm of snow in the afternoon. 40 km/h south ridgetop wind. Treeline temperature 0 °C. Freezing level 1600 m.

Sunday

Cloudy with 5 to 10 cm of snow. 50 km/h south ridgetop wind. Treeline temperature -3 °C. Freezing level 1000 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Watch for wind-loaded pockets especially around ridgecrest and in extreme terrain.
  • Minimize exposure to sun-exposed slopes when the solar radiation is strong.
  • Be alert to conditions that change with aspect and elevation.

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.

Loose Wet

Loose Wet avalanches are the release of wet unconsolidated snow or slush. These avalanches typically occur within layers of wet snow near the surface of the snowpack, but they may quickly gouge into lower snowpack layers. Like Loose Dry Avalanches, they start at a point and entrain snow as they move downhill, forming a fan-shaped avalanche. Other names for loose-wet avalanches include point-release avalanches or sluffs. Loose Wet avalanches can trigger slab avalanches that break into deeper snow layers.