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Avalanche Forecast

Archived

Dec 30th, 2025–Dec 31st, 2025

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

Continuously assess conditions as you move through terrain.

Where the snow surface is dry small wind slabs may exist , where it’s wet loose avalanches are possible.

Confidence

Moderate

  • Uncertainty is due to rapidly fluctuating freezing levels.
  • Uncertainty is due to limitations in the field data.

Avalanche Summary

No new avalanches were reported in the region on Monday.

Several human triggered avalanches size 1 to 1.5 were reported on Sunday off the Coquihalla in the Zoa area. A larger size 2 wind slab was also reported. This avalanche was human triggered on a cross loaded feature at treeline.

Snowpack Summary

Dry, wind affected snow can still be found in the alpine on north aspects. Early in the morning a new surface crust could be found on south aspects at treeline but it’s expected to break down quickly.

The Mid December crust is found down 50 to 150 cm. In general the snowpack is right-side up and well settled.

Weather Summary

Tuesday Night

Clear skies. 30 km/h southwest ridgetop wind. Treeline temperature 3 °C. Freezing level 3000 m.

Wednesday

Sunny. 30 km/h southwest ridgetop wind. Treeline temperature 2 °C. Freezing level 2700 m.

Thursday

Mix of sun and clouds. 20 km/h southwest ridgetop wind. Treeline temperature 2 °C. Freezing level 2500 m.

Friday

Mostly cloudy. 5 to 15 cm of snow at treeline and above, rain below treeline. 30 km/h south ridgetop wind. Treeline temperature 0 °C. Freezing level 1500 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Pay attention to isolated wind affected features in the alpine, as well as cross-loaded features at treeline.
  • Back off slopes as the surface becomes moist or wet with rising temperatures.

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.

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.