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Avalanche Forecast

Archived

Apr 8th, 2024–Apr 9th, 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.
Below Treeline
Natural avalanches unlikely.

Regions

North Columbia, South Columbia, Clearwater, Jordan, North Monashee, North Selkirk, Shuswap, Badshot-Battle, Central Selkirk, Goat, Gold, North Okanagan, Whatshan.

New snow and wind will build fresh wind slabs in exposed lee terrain. If local snow amounts overnight Monday are greater than 20 cm, danger ratings may be greater than posted.

Confidence

Moderate

Avalanche Summary

Avalanche activity on Sunday and Monday was reported as a few loose wet size 1-2 from steep alpine.

Snowpack Summary

There may be 10-20 cm of new snow sitting on the surface. This likely sits on a supportive crust or moist snow at all elevations except high north facing slopes. Weak faceted grains sitting a crust formed in early February are buried 100 to 150 cm. This layer has generally been gaining strength, however it is still occasionally producing large avalanches at upper elevations where supportive crusts have not formed above it.

Weather Summary

Monday Night

Cloudy with 5-15 cm snow at higher elevations. Ridgetop wind west and southwest 30 to 50 km/h . Treeline temperature -3 °C. Freezing level 1500 m.

Tuesday

Cloudy with 3 to 8 cm of snow at upper elevations. Ridgetop wind southwest 25 to 50 km/h. Treeline temperature -2 °C. Freezing level 1500 m.

Wednesday

Mix of sun and cloud. Ridgetop wind west 10 to 20 km/h. Treeline temperature 2 °C. Freezing level 2000 m.

Thursday

Mix of sun and cloud. Ridgetop wind west 10 to 20 km/h. Treeline temperature 3 °C. Freezing level 2100 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Carefully evaluate steep lines for wind slabs.
  • Watch for newly formed and reactive wind slabs as you transition into wind affected terrain.
  • Wind slabs may be poorly bonded to the underlying crust.

Problems

Wind Slabs

Wind Slab avalanches are the release of a cohesive layer of snow (a slab) formed by the wind. Wind typically transports snow from the upwind sides of terrain features and deposits snow on the downwind side. Wind slabs are often smooth and rounded and sometimes sound hollow, and can range from soft to hard. Wind 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.