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 23rd, 2025–Dec 24th, 2025

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

Regions

Coquihalla, Harrison-Fraser, Manning, Skagit.

Snowfall, wind, and warming are a recipe for dangerous avalanche conditions!

It's a good day to avoid overhead hazard make conservative terrain choices.

Confidence

Moderate

  • Uncertainty is due to difficult to forecast freezing levels.

Avalanche Summary

On Monday, several natural size 1 to 2 storm slabs were observed at treeline and below. One size 1 natural wind slab was observed on Zoa peak from below a south-facing alpine cliffband.

Looking forward to Wednesday, ongoing snowfall and wind will continue to form reactive storm slabs, which could be surprisingly deep, especially in wind-loaded terrain.

Snowpack Summary

Up to 15 cm of new snow by end of day Wednesday overlies over 100 cm of settled storm snow from the past week. Strong southerly winds have created a variety of surfaces - wind slabs and loaded pockets in lee features, scoured rock in open terrain, and storm slabs and softer snow in sheltered areas.

Below this recent snowfall, a melt-freeze crust could exist to near mountaintop. The depth of this crust is highly variable due to extensive recent wind transport.

Snow depths at the treeline are estimated to range from 200 to 250 cm.

Weather Summary

Tuesday Night
Mostly cloudy. 1 cm of snow. 20 km/h southeast ridgetop wind. Treeline temperature -4 °C.

Wednesday
Cloudy. 10 to 15 cm of snow. 40 km/h south ridgetop wind. Treeline temperature 0 °C. Freezing level rising to 1600 m.

Thursday
Mostly cloudy. 2 to 3 cm of snow. 20 km/h south ridgetop wind. Treeline temperature -3 °C.

Friday
Mostly cloudy. 5 to 10 cm of snow. 30 km/h southwest ridgetop wind. Treeline temperature -6 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • It's a good day to make conservative terrain choices.
  • Choose low-angled, sheltered terrain where new snow hasn't been wind-affected.
  • Be careful with wind-loaded pockets, especially near ridge crests and rollovers.
  • Loose avalanches may start small, but they can grow and push you into dangerous terrain.

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.

Loose Wet

Loose Wet avalanches are the release of wet unconsolidated snow or slush. These avalanches typically occur within layers of wet snow near the surface of the snowpack, but they may quickly gouge into lower snowpack layers. Like Loose Dry Avalanches, they start at a point and entrain snow as they move downhill, forming a fan-shaped avalanche. Other names for loose-wet avalanches include point-release avalanches or sluffs. Loose Wet avalanches can trigger slab avalanches that break into deeper snow layers.