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Avalanche Forecast

Archived

Dec 26th, 2025–Dec 27th, 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 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

South Coast, North Shore, Sasquatch, Sky Pilot, Tetrahedron.

New snow and strong winds = reactive storm slabs that require a cautious approach to backcountry travel. Stick to lower-angled, low consequence terrain to manage it.

Confidence

Moderate

  • Uncertainty is due to the limited number of field observations.

Avalanche Summary

Reports have been limited. Natural and human triggered avalanche activity has been observed near Cypress.

Tricky avalanche conditions are likely to persist through Saturday as the new snow takes time to settle.

Snowpack Summary

Up to 40 cm of new snow brings us to roughly 120 to 170 cm of settling storm snow since Dec 17.

Each round of substantial snowfall and wind loading has produced storm and wind slab problems, generally limited to each day's accumulations.

In most places the storm snow overlies bare ground. At alpine elevations it covers a crust over 20 to 50 cm of old, wet snow.

Weather Summary

Friday Night
Partly cloudy. 30 km/h northwest ridgetop wind. Treeline temperature -8 °C.

Saturday
Sunny. 20 km/h northwest ridgetop wind. Treeline temperature -10 °C.

Sunday
Mix of sun and clouds. 40 km/h west ridgetop wind. Treeline temperature -7 °C.

Monday
Mostly cloudy. 1 cm of snow. 40 km/h west ridgetop wind. Treeline temperature -2 °C. Freezing level 1000 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Don't let storm day fever lure you into consequential terrain.
  • Start with conservative terrain and watch for signs of instability.
  • Continue to make conservative terrain choices while the storm snow settles and stabilizes.
  • Use extra caution around cornices: they are large, fragile, and can trigger slabs on slopes below.

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.