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Avalanche Forecast

Archived

Jan 17th, 2019–Jan 18th, 2019

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

Regions

Kootenay Boundary.

A weaker storm passes us on Thursday night and a stronger storm on Friday night. Apply additional caution if you find substantial snow accumulation and slab properties.

Confidence

High -

Weather Forecast

THURSDAY NIGHT: Cloudy with light snowfall, accumulation 5 cm, freezing level rising to 1000 m.FRIDAY: Cloudy with light snowfall, accumulation trace to 5 cm, moderate southwest winds, alpine temperature -5 C, freezing level 1200 m.SATURDAY: Cloudy with snowfall, accumulation 10 to 15 cm, moderate to strong southwest winds, alpine temperature -3 C, freezing level rising to 1400 m over the day.SUNDAY: Clearing over the day, light northwest winds, alpine temperature -6 C, freezing level 1000 m.

Avalanche Summary

No new avalanches were observed on Thursday.

Snowpack Summary

New snow on Friday and Saturday will fall onto a sun crust on south aspects and feathery surface hoar in sheltered and shaded areas at all elevation bands. The new snow may not bond well to these surfaces.Below this, the snowpack is generally well-settled.

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.