Avalanche Forecast

Issued: Mar 10th, 2019 3:57PM

The alpine rating is moderate, the treeline rating is moderate, and the below treeline rating is low. Known problems include Wind Slabs.

Avalanche Canada shorton, Avalanche Canada

A storm is approaching from the north and will form fresh wind slabs at higher elevations.

Summary

Confidence

Moderate - Timing of incoming weather systems is uncertain

Weather Forecast

SUNDAY NIGHT: Increasing cloud overnight, 30-50 km/h southwest wind, alpine temperatures drop to -8 C.MONDAY: Storm approaches from the north with 5-15 cm of snow by the evening in northern parts of the region, less in the south, 40-70 km/h southwest wind, alpine high temperatures -5 C, freezing level 800 m.TUESDAY: Snow continues throughout the day with total accumulation of 15-30 cm over the course of the storm, 20-30 km/h northwest wind, alpine high temperatures near -5 C, freezing level 1000 m.WEDNESDAY: Cloudy with isolated flurries then clearing in the afternoon, light northwest wind, alpine high temperatures near -5 C, freezing level 1200 m.

Avalanche Summary

Over the past few days, a few small (size 1) loose and slab avalanches were triggered naturally and by skiers within recent storm snow. On Saturday, one size 2 wind slab avalanche was triggered by a skier north of Pemberton. The avalanche occurred on a southwest aspect at 1850 m.

Snowpack Summary

New snow will accumulate above 10 to 15 cm of recent snow. Strong southwest wind will likely form drifts and wind slabs in exposed areas. Beneath this recent snow you may find hard wind-affected snow at higher elevations, soft and faceted snow in shaded and sheltered areas, and melt-freeze crusts on southerly slopes. The middle and lower snowpack is generally well-settled.

Problems

Wind Slabs

An icon showing Wind Slabs
Fresh slabs will form at higher elevations as snow accumulates throughout the day. Forecast snowfall amounts are variable, so pay attention to how much it snows in your local area.
Watch for signs of instability such as whumpfing, or cracking. Avoid freshly wind loaded features.Be cautious of sluffing in steep terrain.

Aspects: North, North East, East, South East, South, North West.

Elevations: Alpine, Treeline.

Likelihood

Possible

Expected Size

1 - 1.5

Valid until: Mar 11th, 2019 2:00PM

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