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Avalanche Forecast

Archived

Jan 1st, 2025–Jan 2nd, 2025

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

Regions

Lizard-Flathead, Flathead, Lizard.

Surface instabilities may remain reactive to riders.

Choose low-consequence terrain and watch for signs of instability.

Confidence

Moderate

Avalanche Summary

On Tuesday explosive avalanche control and testing near Fernie, produced numerous small ( size 1 to 1.5 ) slab avalanches, These failed on the storm interface that was down approximately 20 cm.

If you head out in the backcountry, let us know what you are seeing by submitting a MIN report!

Snowpack Summary

Recent snow accumulations vary across the region from 30 to 50 cm,. Below 1500 m the surface is presenting as moist. A melt freeze crust can be found throughout the region and is down variable depths from 5 to 20 cm.

The mid and lower snowpack is generally well-settled and stable.

Snow depths at treeline range from 140 to 220 cm.

Weather Summary

Wednesday Night

Cloudy, with isolated flurries. 1 to 5 km/h south ridgetop wind. Treeline temperature -10 °C.

Thursday

Cloudy with light snowfall 1 to 5 cm. 15 to 25 km/h southwest ridgetop wind. Treeline temperature -10 °C.

Friday

Cloudy, with periods of clearing. 20 to 40 km/h southwest ridgetop wind. Treeline temperature -6 °C.

Saturday

Cloudy, with snowfall 10 to 15 cm. 20 to 30 km/h southwest ridgetop wind. Treeline temperature -5 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Look for signs of instability: whumphing, hollow sounds, shooting cracks, and recent avalanches.
  • Be careful with sluffing in steep terrain, especially above cliffs and terrain traps.
  • Be aware of the potential for loose avalanches in steep terrain where snow hasn't formed a slab.

Problems

Storm Slabs

Storm Slab avalanches are the release of a cohesive layer (a slab) of new snow that breaks within new snow or on the old snow surface. Storm-slabs typically last between a few hours and few days (following snowfall). Storm-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 Dry

Loose Dry avalanches are the release of dry unconsolidated snow and typically occur within layers of soft snow near the surface of the snowpack. These avalanches start at a point and entrain snow as they move downhill, forming a fan-shaped avalanche. Other names for loose-dry avalanches include point-release avalanches or sluffs.