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Avalanche Forecast

Archived

Dec 6th, 2025–Dec 7th, 2025

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

Regions

Pine Pass.

Heavy snowfall and strong wind will create dangerous avalanche conditions.

Seek out lower-angled, sheltered terrain for the best and safest riding.

Confidence

Moderate

Avalanche Summary

No recent avalanches have been reported, but observations are limited. We expected heavy snowfall and wind on Monday to form fresh slabs that may fail easily on buried weak layers. Learn more in our recent conditions update.

Let us know what you are seeing by posting a MIN if you are heading out in the backcountry!

Snowpack Summary

Up to 30 cm of new snow is expected to fall on Sunday. This new snow adds to the 10 to 20 cm of snowfall that has accumulated over the past 4 days. Strong southwest wind will redistribute new snow in wind-exposed areas.

This new snow may be sitting on a weak layer of surface hoar, facets and/or a crust formed during the recent cold, clear weather.

Data is limited at this time of year, but to our knowledge, the mid and lower snowpack remains generally well-bonded, containing several crusts from earlier in the season.

Average snow depths at treeline range from 60 to 100 cm and decrease dramatically at lower elevations.

Weather Summary

Saturday Night
Cloudy. 40 to 50 km/h southwest ridgetop wind. Treeline temperature -6 °C.

Sunday
Cloudy. 20 to 30 cm of snow. 50 to 70 km/h south ridgetop wind. Treeline temperature -5 °C.

Monday
Cloudy. 40 cm of snow. 40 to 60 km/h southwest ridgetop wind. Treeline temperature -4 °C.

Tuesday
Mostly cloudy. 5 to 15 cm of snow. 40 to 70 km/h southwest ridgetop wind. Treeline temperature -12 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Storm slab size and sensitivity to triggering will likely increase through the day.
  • Be aware of the potential for large avalanches due to buried weak layers.
  • Be cautious of buried obstacles, especially below treeline.

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.