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Avalanche Forecast

Archived

Dec 9th, 2023–Dec 10th, 2023

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

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

Continue to assess for fresh wind and storm slabs that are likely sitting on a hard crust.

Confidence

Low

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

Approximately 10 to 30 cm of recent snow may sit overtop a widespread thick crust. New snow may not be bonding well with the underlying crust. Below the crust the snowpack is generally well consolidated.

Overall, the snow depth remains relatively shallow, creating challenging travel conditions and numerous hazards at or just below the snow surface across all elevations.

Weather Summary

Saturday Night

Cloudy with 5 to 15 cm of snow, southwest alpine winds 40 to 60 km/h, treeline temperature -3 °C.

Sunday

Cloudy with 2 to 10 cm of snow, southwest alpine winds 30 to 50 km/h, treeline temperature 0 °C, freezing level 2000m in the morning and gradually dropping through the day.

Monday

Mostly sunny with no precipitation, southwest alpine winds 10 to 30 km/h, treeline temperature -3 °C.

Tuesday

Mix of sun and cloud with no precipitation, southwest alpine winds 30 to 40 km/h, treeline temperature -2 °C, freezing level rising to 2500 m by end of the day.

 

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Avoid areas where the snow feels stiff and/or slabby.
  • 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.