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Avalanche Forecast

Archived

Mar 23rd, 2024–Mar 24th, 2024

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

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

While avalanche hazard is improving with cooling temperatures, human-triggered persistent slab avalanches remain a concern in areas not capped by a thick surface crust.

Confidence

Moderate

Avalanche Summary

No new avalanches have been reported in the region.

If you are heading into the backcountry please consider posting your observations to the Mountain Information Network. We read every report!

Snowpack Summary

A dusting of snow overlies a melt-freeze crust that varies in thickness but is present at all elevations except on direct north aspects above 1900 m where the snow surface remained dry through the prolonged warming. Below the crust, the upper 30 cm of the snowpack remains moist.

60 to 170 cm down is a layer of facets overlying a crust. This layer was reactive to human triggering last weekend and it continues to be reactive in snow pit tests. It remains a concern on northerly aspects above 1800 m, where the layer is still possible to human-trigger.

Below the crust, the snowpack is well settled.

Weather Summary

Saturday night

Clear. 15 to 30 km/h northeast ridgetop wind. Treeline temperature -5 °C. Freezing level 700 m.

Sunday

Sunny. <10 km/h variable ridgetop wind. Treeline temperature -1 °C. Freezing level 1800 m.

Monday

Partly cloudy with a trace of snow. <20 km/h southwest ridgetop wind. Treeline temperature -2 °C. Freezing levels 1600 m.

Tuesday

A mix of sun and cloud with a trace of snow. <20 km/h southwest ridgetop wind. Treeline temperature -3 °C. Freezing levels 1500 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Keep in mind that human triggering potential persists as natural avalanching tapers off.
  • Use caution on large alpine slopes, especially around thin areas that may propagate to deeper instabilities.
  • Minimize exposure to sun-exposed slopes when the solar radiation is strong.

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.