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Avalanche Forecast

Archived

Feb 21st, 2025–Feb 22nd, 2025

Alpine
Natural and human triggered avalanches likely.
Treeline
Natural and human triggered avalanches likely.
Below Treeline
Natural avalanches possible, human triggered probable.
Alpine
Natural avalanches possible, human triggered probable.
Treeline
Natural avalanches possible, human triggered probable.
Below Treeline
Natural avalanches unlikely, human triggered possible.
Alpine
Natural avalanches possible, human triggered probable.
Treeline
Natural avalanches possible, human triggered probable.
Below Treeline
Natural avalanches unlikely.

Regions

South Coast Inland, Birkenhead, Duffey, South Chilcotin, Stein, Taseko.

Additional precipitation and warm temperatures bring dangerous avalanche conditions. Small avalanches may step down to underlying weak layers.

Confidence

Moderate

Avalanche Summary

On Wednesday, a group reported being able to ski cut wet slabs in the forest due to warming temperatures.

Several storm slab (up to size 1.5) avalanches have been reported recently, some have been triggered remotely from up to 10 m away. There are reports of these avalanches sliding on the layer of facets that exist beneath the new snow that formed during the drought in January.

Snowpack Summary

Approximately 20 cm of new snow has accumulated on top of various surfaces formed during recent cold, dry conditions. These include firm wind effect in exposed terrain, weak surface hoar or faceted grains in sheltered terrain, and sun crusts on sun-affected slopes.

20 to 50 cm of generally faceted snow overlies a potentially weak layer buried in late January. In many areas, this layer consists of a hard crust along with weak facets or surface hoar.

The mid and lower snowpack is strong and bonded.

Weather Summary

Friday Night

Mainly cloudy with up to 5 cm of snow. 20 to 40 km/h southwest ridgetop wind. Treeline temperature 0 °C.

Saturday

Mainly cloudy with up to 7 mm of mixed precipitation. 20 to 40 km/h southwest ridgetop wind. Freezing level rising to 2000 m.

Sunday

Mix of sun and cloud with trace precipitation. 10 to 30 km/h southwest ridgetop wind. Freezing level 1600 m

Monday

Cloudy with 5 to 15 mm of mixed precipitation. 20 to 40 km/h southwest ridgetop wind. Freezing level 1600 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Be careful with wind-loaded pockets, especially near ridge crests and rollovers.
  • Back off slopes as the surface becomes moist or wet with rising temperatures.

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.

Loose Wet

Loose Wet avalanches are the release of wet unconsolidated snow or slush. These avalanches typically occur within layers of wet snow near the surface of the snowpack, but they may quickly gouge into lower snowpack layers. Like Loose Dry Avalanches, they start at a point and entrain snow as they move downhill, forming a fan-shaped avalanche. Other names for loose-wet avalanches include point-release avalanches or sluffs. Loose Wet avalanches can trigger slab avalanches that break into deeper snow layers.