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Avalanche Forecast

Archived

Mar 25th, 2024–Mar 26th, 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

Sea To Sky, South Coast Inland, Homathko, Birkenhead, Duffey, South Chilcotin, Stein, Taseko.

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 thick crust capping a moist upper snowpack on all but direct north aspects above 1900 m, where the well-settled dry snow can be found.

A significant crust/facet layer is buried 60 to 170 cm deep. Now over a week ago, this layer was reactive to human triggering 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

Monday night

Partly cloudy with up to 5 cm of snow. 10 to 20 km/h southwest ridgetop wind. Treeline temperature -4 °C. Freezing level 900 m.

Tuesday

Mostly cloudy with up to 5 cm of snow. <10 km/h southwest ridgetop wind. Treeline temperature -1 °C. Freezing level 1600 m.

Wednesday

Mostly cloudy with up to 5 cm of snow. 20 to 40 km/h south ridgetop wind. Treeline temperature -2 °C. Freezing level 1500 m.

Thursday

A mix of sun and cloud. 10 to 20 km/h southwest ridgetop wind. Treeline temperature -1 °C. Freezing level 1600 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Conditions may have improved, but be mindful that deep instabilities are still present.
  • Use caution on large alpine slopes, especially around thin areas that may propagate to deeper instabilities.
  • When a thick, melt-freeze surface crust is present, avalanche activity is unlikely.

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.