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Avalanche Forecast

Archived

Apr 7th, 2024–Apr 8th, 2024

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

Regions

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

Start on small features and retreat to mellower terrain if you find signs of instability.

Watch for changing conditions, storm slabs will get deeper and more reactive through the day.

Confidence

Moderate

Avalanche Summary

No recent avalanches have been reported.

If you are getting out in the backcountry, consider making a post on the MIN (Mountain Information Network).

Snowpack Summary

Snowfall amounts above treeline will vary across the forecast area, 7 to 15 cm for the east and south island, 25-30 cm for the north island, and as much as 50 cm on the west island. Through the day, snow will turn to rain around treeline, making the surface snow shallower, denser, and wetter. At high elevations, the new snow covers a hard, frozen crust.

Below the crust, the rest of the snowpack is generally settled and well-bonded.

Below treeline, the snow is moist or wet and slopes are largely below the threshold for avalanches.

Weather Summary

Sunday Night

Cloudy. Generally 2 to 5 cm of snow expected above 750 m, with 8 to 15 cm on the west island. Strong southwest ridgetop wind. Treeline temperature around -2 °C.

Monday

Cloudy. Light to moderate rain, generally 5 to 10 cm of snow expected above 1200 m, with 20 to 35 cm on the north and west island. Strong southwest ridgetop wind. Treeline high around 0 °C

Tuesday

Mostly cloudy. Light rain, generally 0 to 5 cm of snow expected above 1200 m, with up to 10 cm on the south island. Moderate to strong southwest ridgetop wind. Treeline high around 0 °C.

Wednesday

Mostly cloudy. No new snow/rain expected. Light southwest ridgetop wind. Treeline high around 1 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Watch for changing conditions today, storm slabs may become increasingly reactive.
  • Continue to make conservative terrain choices while the storm snow settles and stabilizes.
  • A moist or wet snow surface, pinwheeling and natural avalanches are all indicators of a weakening snowpack.
  • When a thick, melt-freeze surface crust is present, avalanche activity is unlikely.

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.