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Avalanche Forecast

Archived

Jan 22nd, 2024–Jan 23rd, 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.
Below Treeline
Natural avalanches unlikely.

Regions

Sasquatch, Sasquatch, Coquihalla, Harrison-Fraser, Manning, Skagit.

Watch for new wind slabs forming, as this is when they are most reactive.

Freezing levels are variable throughout the region, surface conditions are your best indicator for avalanche type.

Confidence

Moderate

Avalanche Summary

Multiple new wet loose and glide slab avalanches (Size 1 to 2) have been reported in the Coquihalla and Fraser Valley area from the recent warming period.

Thank you to all our recent MIN submissions, we appreciate you!

Snowpack Summary

In the alpine, up to 30 cm of wind affected snow is topped by a variably breakable crust caused by recent strong winds and above freezing temperatures. At lower elevations, the top 10-20 cm of snow is moist.

The mid and lower snowpack contains various old crusts and is generally well-settled and stable.

Weather Summary

Monday Night

Mainly cloudy with 5 to 10 cm of snow at higher elevations. Alpine wind southwest, 30 to 40 km/h. Treeline temperature 0°C. Freezing level 1500 m.

Tuesday

Mainly cloudy with 5 to 15 cm of snow at higher elevations. Alpine wind southwest 30 to 40 km/h. Treeline temperature 0°C. Freezing level 1500 m.

Wednesday

Mix of sun and cloud with trace precipitation. Alpine wind southwest 20 to 30 km/h. Treeline temperature 0 °C. Freezing level 1500 m.

Thursday

Mix of sun and cloud with trace precipitation. Alpine wind southwest 20 to 30 km/h. Treeline temperature 0°C. Freezing level 1500 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Watch for newly formed and reactive wind slabs as you transition into wind affected terrain.
  • Be carefull with sluffing in steep terrain, especially above cliffs and terrain traps.
  • The more the snow feels like a slurpy, the more likely loose wet avalanches will become.

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.