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Avalanche Forecast

Archived

Jan 16th, 2024–Jan 17th, 2024

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

New snow may not be bonding to the cold, wind-affected surfaces below.

Storm slabs and loose dry avalanches will become more likely as snow accumulates throughout the day.

Confidence

Moderate

Avalanche Summary

No recent avalanche activity has been observed.

If you head into the backcountry, please consider submitting a MIN report.

Snowpack Summary

New snow has buried widespread wind-affected snow surfaces at treeline and above. The recent cold and clear weather has likely led to widespread facet and surface hoar development which may prolong the bonding of new snow to the underlying surfaces.

Roughly 100 cm of recent snow sits atop a crust with a generally well-settled and stable lower snowpack.

With recent snowfall lower elevation areas may now be at the threshold for avalanches.

Weather Summary

Tuesday Night

Cloudy with 2 to 8 cm of snow, southwest alpine winds 10 to 30 km/h, treeline temperature -6 °C.

Wednesday

Cloudy with 15 to 25 cm of snow, variable alpine winds 10 to 30 km/h, treeline temperature -12 °C.

Thursday

Mostly cloudy with no precipitation, southeast alpine winds 20 to 40 km/h, treeline temperature -10 °C.

Friday

Cloudy with up to 5 cm of snow, southwest alpine winds 30 to 50 km/h, treeline temperature -1 °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 old surface.
  • Dial back your terrain choices if you are seeing more than 20 cm of new snow.

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.