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Avalanche Forecast

Archived

Dec 8th, 2023–Dec 9th, 2023

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

Regions

Sasquatch, Sasquatch, Coquihalla, Harrison-Fraser, Manning, Skagit.

Continually assess for fresh storm and wind slabs building throughout Saturday.

Confidence

Moderate

Avalanche Summary

No new avalanches have been reported. However, observations have been minimal throughout the early winter.

If you're heading out in the backcountry, please consider sharing any observations on the Mountain Information Network

Snowpack Summary

Anywhere form 5 to 25 cm of recent snow may sit overtop a widespread thick crust. New snow may not be bonding well with the underlying crust. This crust should provide a bridge over any previous layers of concern deeper in the snowpack.

Snow depth at treeline is roughly 60 to 80 cm and decreases dramatically at lower elevations.

Weather Summary

Friday Night

Mostly clear with no precipitation, southwest alpine winds 20 to 30 km/h, treeline temperature -7 °C.

Saturday

Cloudy with 5 to 10 cm of snow, south alpine winds 30 to 40 km/h, treeline temperature -5 °C.

Sunday

Cloudy with 2 to 5 cm of snow, southwest alpine winds 40 to 50 km/h, treeline temperature 0 °C.

Monday

Mostly sunny with 5 to 10 cm of snow overnight ending Monday morning, east alpine winds 20 to 30 km/h, treeline temperature -2 °C.

 

 

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Watch for fresh storm slabs building throughout the day.
  • Closely monitor how the new snow is bonding to the crust.
  • Early season avalanches at any elevation have the potential to be particularly dangerous due to obstacles that are exposed or just below the surface.

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.