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Avalanche Forecast

Archived

Apr 2nd, 2025–Apr 3rd, 2025

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

Regions

South Coast Inland, Birkenhead, Duffey, South Chilcotin, Stein, Taseko.

Uncertainty remains regarding buried weak layers in this region, so careful snowpack and terrain assessment is crucial.

Be extra cautious around cornices and sun-exposed slopes.

Confidence

Moderate

Avalanche Summary

Reports have been limited in this region, but weekend observations indicate a widespread cycle of large persistent slab avalanches during last weekend's warm-up. The status of this problem remains uncertain, but it likely persists on north-facing terrain at treeline and alpine elevations.

Snowpack Summary

Expect wet and moist surfaces on sun-exposed slopes. 10 to 20 cm of wind-affected dry snow exists at high elevations, sitting over a melt-freeze crust. Below this, the upper snowpack remains moist or wet.

Several persistent weak layers from January, February, and March can be found between 1 and 2 m deep across the region.

At lower elevations, the rain-saturated snowpack tapers quickly with elevation.

Weather Summary

Wednesday Night

Partly cloudy. 20 km/h northwest ridgetop wind. Treeline temperature -4 °C.

Thursday

Mostly sunny. 20 km/h northwest ridgetop wind. Treeline temperature -1 °C. Freezing level 1700 m.

Friday

Sunny. 10 km/h southeast ridgetop wind. Treeline temperature +2 °C. Freezing level 2000 m.

Saturday

Mix of sun and cloud. 30 km/h south ridgetop wind. Treeline temperature +3 °C. Freezing level 2300 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Make observations and continually assess conditions as you travel.
  • Be aware of the potential for large avalanches due to buried weak layers.
  • Limit exposure to steep, sun exposed slopes, especially when the solar radiation is strong.
  • Pay attention to cornices and give them a wide berth when traveling on or below ridges.

Problems

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.

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.