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Avalanche Forecast

Archived

Jan 7th, 2019–Jan 8th, 2019

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, 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.

Regions

South Columbia.

You may find touchy wind slabs at higher elevations. Best to employ cautious route-selection and decision-making in suspect terrain features.

Confidence

High -

Weather Forecast

MONDAY NIGHT: Clearing, freezing level below valley bottom.TUESDAY: Mostly cloudy, light southwest winds, alpine temperature -10 C, freezing level below valley bottom.WEDNESDAY: Cloudy with light snowfall, accumulation 5 cm, light to moderate southwest winds, alpine temperature -5 C, freezing level below valley bottom.THURSDAY: Cloudy with light snowfall, accumulation 5 to 10 cm, light to moderate southwest winds, alpine temperature -4 C, freezing level below valley bottom.

Avalanche Summary

A few small to large (size 1 to 2) storm slab avalanches were triggered by skiers and naturally in the region on Sunday. Check out this MIN report for an example.

Snowpack Summary

30 to 70 cm of recent snow has been redistributed by strong south to southwest winds. Wind effect is widespread in the alpine as well as isolated features at treeline elevations. A thin (1 to 2 mm) freezing-rain crust under the new snow has been reported in the mountains surrounding Revelstoke. Below this, the snowpack is generally settled and strong.

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.