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Avalanche Forecast

Archived

Nov 29th, 2024–Nov 30th, 2024

Alpine
Natural avalanches unlikely.
Treeline
Natural avalanches unlikely.
Below Treeline
Natural avalanches unlikely.
Alpine
Natural avalanches unlikely.
Treeline
Natural avalanches unlikely.
Below Treeline
Natural avalanches unlikely.
Alpine
Natural avalanches unlikely.
Treeline
Natural avalanches unlikely.
Below Treeline
Natural avalanches unlikely.

Regions

Coquihalla, Manning, Skagit.

Seek out sheltered powder for better, safer riding.

Consider submitting a MIN report if you are out in the mountains.

Confidence

Low

Avalanche Summary

We have not had any reports of avalanche activity since the 27th of Nov.

Please consider sharing any observations you have on the Mountain Information Network.

Snowpack Summary

New snow may bury surface hoar crystals, potentially creating an avalanche problem. However, rain before snow likely mitigates this danger.

Expect the old snow to be affected by the wind in open areas and generally well settled.

The bottom of the snowpack contains several crusts that have not been a concern.

Around 100 cm of snow can be found at treeline. This diminishes rapidly below about 1500 m, where a surface crust is present.

Weather Summary

Friday Night

Cloudy with 2 cm of snow. 20 to 40 km/h west ridgetop wind. Treeline temperature -5 °C.

Saturday

Cloudy with 2 cm of snow. 20 to 30 km/h west ridgetop wind. Treeline temperature -2 °C. Freezing level 1100 m.

Sunday

A mix of sun and cloud with 5 cm of snow. 20 to 30 km/h southwest ridgetop wind. Treeline temperature 2 °C. Freezing level 2500 m.

Monday

Sunny. 10 to 20 km/h southwest ridgetop wind. Treeline temperature 4 °C. Freezing level 3200 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Make observations and continually assess conditions as you travel.
  • Carefully evaluate steep lines for wind slabs.
  • Use caution above cliffs and terrain traps where even small avalanches may have severe consequences.

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.