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Avalanche Forecast

Archived

Feb 22nd, 2026–Feb 23rd, 2026

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

Regions

Glacier.

Wind slab hazard is building at upper elevations and a persistent weak layer lurks down low.

Human and remote triggering of the persistent slab is still possible.

Confidence

Moderate

  • We are confident that there are persistent slabs in the snowpack, but uncertain about how likely they are to trigger.

Avalanche Summary

Human triggered wind slab and persistent slab avalanches have been reported on the MIN.

Field teams have triggered numerous size 1 to 2 persistent slabs from low angle terrain at tree-line and below. These have been 40-60cm deep, failing on surface hoar layers in the upper snowpack.

Snowpack Summary

The surface has up to 60cm of low density snow in sheltered areas with wind slab development in exposed terrain.

The Feb 9 surface hoar (SH) is down 50-80cm and remains reactive in snowpack testing. The Feb 9 SH sits over a crust on solar aspects.

The Jan 26th layer, composed of surface hoar/facets/crust, is buried down 60-80cm. The largest surface hoar is preserved in sheltered areas below treeline.

Weather Summary

Gusty!

Tonight: Flurries, 6cm. Alp low -6°C. Wind SW 20 gusting to 75 km/h. Freezing level (FZL) 1200m.

Mon: Flurries, 8 cm. High -5. Wind SW 20 gusting to 75km/h. FZL 1400 metres.

Tues Cloudy / sunny periods and isolated flurries. Trace precipitation. High -8. Wind SW 20 gusting to 50 km/h. FZL 900m.

Wed Cloudy with scattered flurries, 4 cm. High -7. Wind SW 20 gusting to 60 km/h. FZL 900m.

Terrain and Travel Advice

  • Surface hoar distribution is highly variable. Avoid generalizing your observations.
  • If triggered, wind slabs may step down to deeper layers, causing larger avalanches.
  • Be alert to conditions that change with elevation, aspect, and exposure to wind.

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.