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Avalanche Forecast

Archived

Dec 26th, 2025–Dec 27th, 2025

Alpine
Natural avalanches possible, human triggered probable.
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

Coquihalla, Harrison-Fraser, Manning, Skagit.

Monitor storm snow reactivity as you travel, dial back terrain choices if you see signs of instability. Sheltered terrain away from overhead hazards will offer the best, safest conditions.

Confidence

Moderate

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

Avalanche Summary

No new avalanches were reported in the region.

Storm snow may remain reactive active to human triggers throughout the day as the new storm snow settles.

Snowpack Summary

Up to 25 cm of storm snow coupled with moderate wind has developed new storm slabs.

This brings total amounts to roughly 130 cm of settling over the December 16 crust. Strong southerly winds over this period have left behind wind slabs of varying age and reactivity, and exposed rock or December crust in open terrain.

Snow depths at the treeline range widely, from 100 - 300 cm, as a result of wind redistribution.

Weather Summary

Friday Night
Mostly cloudy. 2 to 5 cm of snow. 20 km/h northwest ridgetop wind. Treeline temperature -11 °C.

Saturday
Sunny. 20 km/h north ridgetop wind. Treeline temperature -14 °C.

Sunday
Mix of sun and clouds. 30 km/h west ridgetop wind. Treeline temperature -9 °C.

Monday
Mix of sun and clouds. 1 cm of snow. 40 km/h west ridgetop wind. Treeline temperature -3 °C. F

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Avoid steep, rocky, and wind-affected areas where triggering slabs is more likely.
  • Don't let storm day fever lure you into consequential terrain.
  • 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.