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Avalanche Forecast

Archived

Apr 3rd, 2025–Apr 4th, 2025

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

Regions

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

Be cautious around cornices and sun-exposed slopes, and carefully assess snowpack and terrain due to uncertainty about buried weak layers.

Confidence

Moderate

Avalanche Summary

Recent reports have been limited to small wet loose avalanches.

During last week's warm-up, a widespread cycle of large persistent slab avalanches occurred. The current status of this problem is uncertain, but it likely persists in areas where the upper snowpack has not undergone significant melt-freeze cycles.

Snowpack Summary

Dry, settled powder may still exist on high north-facing slopes, while elsewhere, a daily melt-freeze cycle is forming a hard crust overnight that softens during the day.

Persistent weak layers from January, February, and March are buried 50 to 150 cm deep across the region, though their current reactivity remains uncertain.

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

Weather Summary

Thursday Night

Clear. 10 km/h northwest ridgetop wind. Treeline temperature -2 °C. Freezing level 1700 m.

Friday

Sunny. 10 km/h southwest ridgetop wind. Treeline temperature +1 °C. Freezing level 2000 m.

Saturday

Mix of sun and cloud. 20 km/h southwest ridgetop wind. Treeline temperature +3 °C. Freezing level 2300 m.

Sunday

Mostly cloudy with 1 to 2 mm of rain. 30 km/h south ridgetop wind. Treeline temperature +2 °C. Freezing level 2100 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.