Dashboard Regions Weather Stations Radar Alerts Glossary
Contact About
Log In

Register for an account and never miss a forecast again!

Register

Avalanche Forecast

Archived

Dec 4th, 2025–Dec 5th, 2025

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

Regions

Coquihalla, Harrison-Fraser, Manning, Skagit.

Avalanche danger will rapidly increase when snowfall changes to rainfall.

Cautious travel is advised as the snowpack remains shallow in many areas.

Confidence

Low

Avalanche Summary

No avalanches have been reported. However, observations are limited.

If you're heading out into the backcountry, please consider sharing your observations on the MIN.

Snowpack Summary

New snowfall may not bond well to old snow crystals, including: surface hoar, sugary facets, and sun crusts. It's estimated that anywhere from 15 to 35 cm of new snow will have covered this layer.

Above treeline, there is a buried crust down 40 to 60 cm, which extends to the ground. The snowpack is around 70 to 90 cm deep at treeline, and diminishes rapidly below treeline.

In wind exposed areas, soft snow has likely been redistributed into lee features and formed wind slabs.

Weather Summary

Thursday Night
Cloudy. 1 to 2 cm of snow. 20 km/h west ridgetop wind. Treeline temperature -3 °C. Freezing level 1100 m.

Friday
Cloudy. 10 mm of precipitation as snow or rain at treeline. 50 km/h southwest ridgetop wind. Treeline temperature -1 °C. Freezing level 1500 m.

Saturday
Mostly cloudy. 20 to 30 mm of precipitation as snow or rain at treeline. 50 km/h west ridgetop wind. Treeline temperature -2 °C. Freezing level 1500 m.

Sunday
Mostly cloudy. 15 to 20 cm of snow. 50 km/h southwest ridgetop wind. Treeline temperature -2 °C. Freezing level 1400 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Avalanche danger will rapidly increase if snow switches to rain.
  • Recent wind has varied in direction, so watch for wind slabs on all aspects.
  • Be cautious of buried obstacles, especially below treeline.

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.

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.