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Avalanche Forecast

Archived

Dec 30th, 2022–Dec 31st, 2022

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

Regions

Coquihalla, Harrison-Fraser, Manning, Skagit.

If pushing into bigger terrain assess for stiff, cohesive wind slabs in exposed terrain. The recent storm snow may still need time to bond to the underlying layers.

Confidence

Moderate

Avalanche Summary

No recent avalanche activity has been reported.

Please continue to post your observations and photos to the Mountain Information Network.

Snowpack Summary

Recent snow continues to be redistributed by southerly winds. The underlying snow is frozen into a melt-freeze crust in most higher elevations, while the recently buried snow remains moist at lower elevations. The mid and lower snowpack is generally well settled and bonding.

Snowpack depths are roughly 140 to 180 cm at treeline.

Weather Summary

Friday night

Cloudy with light snow, 2 to 5 cm. Moderate southwest winds. 0 to -5 C at treeline. Freezing levels 700 m.

Saturday

Cloudy with snow, 0 to 10 cm. Moderate southwest winds. -5 C at treeline. Freezing level 1000 m.

Sunday

Cloudy with sunny periods, trace snow amounts. Light southwest winds. 0 to -5 C at treeline. Freezing levels 1000 m.

Monday

Mostly sunny, with no precipitation. Light to moderate southerly winds. -5 to -10 C at treeline. Freezing levels 600 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Carefully evaluate steep lines for wind slabs.
  • Closely monitor how the new snow is bonding to the old surface.

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.