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Avalanche Forecast

Archived

Feb 12th, 2026–Feb 13th, 2026

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

Regions

Little Yoho, Kootenay.

Decent conditions overall, but we have lingering concerns for persistent slabs in these areas, where a 20-40 cm slab may overlie the Jan 24 surface hoar/crust layer and be reactive in steeper terrain. As the surface snow becomes deeper, watch for cracking or signs of slab formation.

Confidence

Avalanche Summary

A report from yesterday in Yoho about the Jan 24 surface hoar being reactive below treeline shows the layer can still be triggered. No other avalanches reported.

Snowpack Summary

The snow surface is a mix of crusts, wind slab and soft snow, and changes often within short distances. Below this, lies a variety of crusts on solar aspects; dry snow on north aspects, and surface hoar/crust (Jan 24) down 15-30 cm at treleine and below. This layer has been reactive recently between 1500 and 800m. Below this interface, the snowpack is generally strong and well settled.

Weather Summary

Friday - Moderate SW winds, trace snow and treeline temperatures around -7C

Saturday - Moderate SW winds, 3-5cm of snow, and the same temperatures as Friday

Sunday - Trace snow, and similar winds and temperatures.

Terrain and Travel Advice

  • Wind slabs are isolated, but may remain reactive.
  • Approach steep and open slopes at and below treeline cautiously, as buried surface hoar may exist.

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.