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Avalanche Forecast

Archived

Mar 30th, 2025–Mar 31st, 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.
Treeline
Natural avalanches unlikely.
Below Treeline
Natural avalanches unlikely.

Regions

Vancouver Island, East Island, North Island, South Island, West Island.

Check for small storm slabs at upper elevations.

Confidence

Moderate

Avalanche Summary

Looking forward, we expect small storm slabs may have formed at upper elevations. Look for deeper and more reactive deposits on north- and west-facing slopes, formed by south and east winds.

Small loose wet avalanches out of steep terrain on treeline and below treeline slopes were reported on Thursday and Friday around Mt Washington.

Snowpack Summary

Between 5 and 15 cm of new snow is expected by the end of the day on Monday. This falls on 20 cm of moist snow at upper elevations and what we now expect to be a crust below 1100 m, from previous above-freezing temperatures and rain.

The mid-pack contains a robust crust formed in early March. The snow above is well bonded to this crust, and below it, the snowpack is well consolidated and strong.

Weather Summary

Sunday Night

Cloudy with 5 mm, falling as snow above 1400 m. 50 km/h southeast ridgetop winds. Treeline temperature 0 °C. Freezing level 1700 m dropping to 1000 m.

Monday

Cloudy with up to 5 mm, falling as snow above 1000 m. 10 km/h east ridgetop wind. Treeline temperature -1 °C.

Tuesday

Mostly cloudy. 20 to 30 km/h northwest ridgetop winds. Treeline temperature 1 °C.

Wednesday

Partly cloudy. 10 to 20 km/h north ridgetop winds. Treeline temperature 0 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Be careful with wind-loaded pockets, especially near ridge crests and rollovers.
  • Avalanche activity is unlikely when a thick melt-freeze crust is present on the snow surface.
  • Back off slopes as the surface becomes moist or wet with rising temperatures.

Problems

Storm Slabs

Storm Slab avalanches are the release of a cohesive layer (a slab) of new snow that breaks within new snow or on the old snow surface. Storm-slabs typically last between a few hours and few days (following snowfall). Storm-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.

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.