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Avalanche Forecast

Archived

Feb 21st, 2024–Feb 22nd, 2024

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

Regions

Cariboos, Blue River, Clearwater, McBride, Premier, Quesnel, Clemina, North Monashee.

Continuously assess conditions and look for signs of instability as you move through terrain.

New snow amounts vary throughout the region and so do the surfaces it has fallen on.

Confidence

Moderate

Avalanche Summary

On Monday there were several small rider triggered dry loose avalanches reported.

On Sunday, southwest of Mcbride a small (size 1.5) wind slab was remotely triggered from 5 metres away with no involvement.

Snowpack Summary

5 to 15 cm of new snow has buried a variety of surfaces including surface hoar  and facets in sheltered terrain, a crust on south and west facing slopes as well as old wind slab on exposed terrain.

The widespread crust buried in early February is near the surface on exposed alpine terrain and down up to 45 cm elsewhere. In many areas this crust has a layer of facets above.

Weather Summary

Wednesday Night

A mix of cloud and clear skies with up to 2 cm of new snow. 5 to 20 km/h southwest alpine wind. Treeline temperature -7°C.

Thursday

A mix of sun and cloud with trace amounts of new snow. 15 to 35 km/h west alpine wind. Treeline temperature -4°C.

Friday

Cloudy with 5 to 10 cm of new snow. 20 to 40 km/h southwest alpine wind. Treeline temperature -4°C.

Saturday

Cloudy with up to 10 cm of new snow. 25 to 40 km/h west alpine wind. Treeline temperature -7°C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Avoid terrain traps such as gullies and cliffs where the consequence of any avalanche could be serious.
  • Look for signs of instability: whumphing, hollow sounds, shooting cracks, and recent avalanches.
  • Be carefull around freshly wind loaded features.

Problems

Persistent Slabs

Persistent Slab avalanches are the release of a cohesive layer of snow (a slab) in the middle to upper snowpack, when the bond to an underlying persistent weak layer breaks. Persistent layers include: surface hoar, depth hoar, near-surface facets, or faceted snow. Persistent weak layers can continue to produce avalanches for days, weeks or even months, making them especially dangerous and tricky. As additional snow and wind events build a thicker slab on top of the persistent weak layer, this avalanche problem may develop into a Deep Persistent Slab.

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.