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Avalanche Forecast

Archived

Apr 9th, 2026–Apr 10th, 2026

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

Regions

Microwave-Sinclair, North Bulkley, South Bulkley, Telkwa.

Sun and daytime warming can quickly change snow conditions. Avoid steep slopes if the snow is moist, and stay well clear of cornices, which may weaken and threaten slopes below.

Confidence

Moderate

  • We are uncertain about how the timing or intensity of solar radiation will affect the snowpack.
  • We are confident that there are persistent slabs in the snowpack, but uncertain about how likely they are to trigger.

Avalanche Summary

On Thursday, the NW Field Team saw a natural size 3 persistent slab in the alpine on a west aspect. They suspect it was up to 24 hrs old.

On Wednesday, reports of steep sun-facing slopes shed small wet loose avalanches up to size 1.

On Tuesday, a large, size two avalanche was triggered by a snowmobile. The release was in an open alpine feature and may have involved a weak layer down 75 to 150 cm.

Snowpack Summary

Sunny skies, daytime warming and continued northwest winds have created variable surface conditions. In the alpine, isolated pockets of wind slab may exist on northerly slopes. Melt-freeze conditions exist on sun-facing slopes.

At treeline and below, moist and/or refrozen surfaces exist on sunny slopes, and some dry snow (up to 10 cm) is likely be found on northerly slopes. Below 700 m, the snowpack is becoming isothermal. On sun-facing slopes, the surface snow is moist.

A thick crust with faceted snow from late January can be found at a wide range of depths, from 75 to 150 cm. A cornice fall (large load) may be enough to trigger this slab.

Weather Summary

Thursday Night
Mostly clear skies. 20 km/h west ridgetop wind. Treeline temperature 0 °C. Freezing level 1500 m.

Friday
Mix of sun and clouds. 10 km/h southwest ridgetop wind. Treeline temperature 1 °C. Freezing level 2000 m.

Saturday
Mix of sun and clouds. 1 mm of precipitation as snow or rain at treeline. 10 km/h north ridgetop wind. Treeline temperature 2 °C. Freezing level 1800 m.

Sunday
Mostly sunny. 10 km/h southeast ridgetop wind. Treeline temperature 2 °C. Freezing level 2000 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Back off slopes as the surface becomes moist or wet with rising temperatures.
  • Use extra caution around cornices: they are large, fragile, and can trigger slabs on slopes below.
  • Be aware of the potential for large avalanches due to buried weak layers.
  • Be careful as you transition into wind-affected terrain.

Problems

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.

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.

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.