Avalanche Forecast

Issued: Mar 3rd, 2024 4:00PM

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

Avalanche Canada trettie, Avalanche Canada

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Avoid Avalanche Terrain

Beware of overhead and adjacent slopes. Remote triggering is a concern, avalanches have run full path

We have received a report of a serious incident near Revelstoke

Summary

Confidence

High

Avalanche Summary

Human and naturally triggered avalanche activity continues throughout the region with avalanches ranging in size from 2 to 4. Some avalanches have  run full path to valley bottom. Many human triggered avalanches have been remotely triggered and also resulted in sympathetics.

We expect human triggered avalanche activity to continue.

Snowpack Summary

The wind has come from a variety of directions, wind effect could be found on all exposed terrain at higher elevations. A new crust could be found on south and west facing slopes as well as all aspects at low elevations..

50 to 110 cm overlies a layer of surface hoar in wind-sheltered terrain, weak facets, or a hard melt-freeze crust on south and west-facing slopes.

A thick and hard widespread crust that formed in early February is buried about 70 to 140 cm deep and extends up to 2400 m. This crust may have a layer of facets above it. The snowpack below this crust is generally not concerning except in shallow alpine terrain.

Weather Summary

Sunday Night

Mostly cloudy with around 5 cm of new snow. 10 to 30 km/h south alpine wind.  Treeline temperature -11°C.

Monday

A mix of sun and cloud with around 5 cm of new snow. 10 to 25 km/h southwest to west alpine wind. Treeline temperature  -10°C.

Tuesday

Clearing skies throughout the day with up to 5 cm of new snow. 20 to 40 km/h west alpine wind. Treeline temperature -11°C.

Wednesday

Sunny. 5 to 20 km/h northwest alpine wind. Treeline temperature -10°C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Conservative terrain selection is critical, choose only well supported, low consequence lines.
  • Remote triggering is a concern, watch out for adjacent and overhead slopes.
  • Be aware of the potential for surprisingly large avalanches due to deeply buried weak layers.
  • If triggered, wind slabs avalanches may step down to deeper layers resulting in larger avalanches.
  • Recent wind has varied in direction so watch for wind slabs on all aspects.
  • Avoid exposure to steep sun exposed slopes.

Problems

Persistent Slabs

An icon showing Persistent Slabs

A weak layer of faceted grains above a crust buried 70 to 140 cm deep is a recipe for large, high-consequence avalanches. Remote triggering is an ongoing concern.

Avalanches triggered on this layer could run full path.

Aspects: All aspects.

Elevations: All elevations.

Likelihood

Likely

Expected Size

2 - 4

Wind Slabs

An icon showing Wind Slabs

Wind slab could be found on all exposed slopes at treeline and above.

these avalanches could step down to deeper layers.

Solar Input could increase the likelihood of triggering.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood

Likely

Expected Size

1.5 - 3

Valid until: Mar 4th, 2024 4:00PM

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