Avalanche Forecast

Issued: Dec 13th, 2024 4:00PM

The alpine rating is high, the treeline rating is considerable, and the below treeline rating is considerable. Known problems include Storm Slabs.

Avalanche Canada Avalanche Canada, Avalanche Canada

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Heavy snowfall and strong winds are building reactive storm slabs. Human-triggered avalanches are likely.

Summary

Confidence

High

Avalanche Summary

No new avalanches have been reported this week, but avalanche activity is expected to increase as the snow piles up.

If you are going out in the backcountry, please consider filling out a Mountain Information Network (MIN) report.

Snowpack Summary

Fresh snow falling with strong gusty winds will accumulate through Saturday.

The upper snowpack is a series of crusts with moist snow between. The lower snowpack is well-settled with no layers of concern.

Snow depths at treeline vary across Vancouver Island from 230 cm near Mt. Washington to 130 cm near Mt Cain. This current storm forecasts the highest precipitation amounts between Cambell River and Port Alberni.

Weather Summary

Friday night

Snowing, 10 to 20 cm of snow. 50 to 90 km/h south-southeast ridgetop wind. Treeline temperature -2 °C.

Saturday

Snowing, 15 to 25 cm of snow. 40 to 80 km/h south ridgetop wind. Treeline temperature -2 °C.

Sunday

Unsettled and cloudy. 15 to 30 km/h south ridgetop wind. Treeline temperature -4 °C.

Monday

Flurries, 10 cm. 20 km/h south ridgetop wind. Treeline temperature -4 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Avoid avalanche terrain during periods of heavy loading from new snow, wind, or rain.
  • As the storm slab problem worsens, the easy solution is to choose more conservative terrain.

Problems

Storm Slabs

An icon showing Storm Slabs

Snowfall accumulating with strong to extreme winds will build a widespread and reactive storm slab problem.

Aspects: All aspects.

Elevations: All elevations.

Likelihood

Likely - Very Likely

Expected Size

1.5 - 2.5

Valid until: Dec 14th, 2024 4:00PM

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