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Avalanche Forecast

Archived

Dec 29th, 2022–Dec 30th, 2022

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

Regions

South Coast, North Shore, Sasquatch, Sasquatch, Sky Pilot.

As new snow accumulates throughout the day the likelihood of triggering an avalanche will increase. Continually assess the changing conditions throughout the day.

Confidence

Moderate

Avalanche Summary

No notable recent avalanches have been reported.

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

Snowpack Summary

New snow is burying a highly saturated snowpack from recent rain events. At higher elevations, the new snow overlies a melt-freeze crust. Treeline snow depths range from 100 to 150 cm.

Weather Summary

Thursday night

Cloudy and snow, 10 to 20 cm. Light southeast winds. 0 C at treeline. Freezing levels 1000 m.

Friday

Cloudy and heavy snow, 30 to 50 cm. Moderate south winds. 0 C at treeline. Freezing levels 1200 m.

Saturday

Cloudy and snow, 5 to 10 cm. Light southerly winds, with strong gusts. 0 C at treeline. Freezing levels 1000 m.

Sunday

Mostly cloudy, with no precipitation. Light south winds. -5 C at treeline. Freezing levels 700 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Storm slab size and sensitivity to triggering will likely increase through the day.
  • Watch for signs of slab formation throughout the day.

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.

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.