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Avalanche Forecast

Archived

Feb 11th, 2026–Feb 12th, 2026

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

Regions

Glacier.

Keep the persistent slab problem on your mind at treeline and below.

Shooting cracks and "whumphing" are red flags that human triggering remains 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

A few natural avalanches, size 1 to 1.5, have been observed along the highway corridor recently.

Field teams on Tuesday were triggering small, loose dry avalanches in low density storm snow in steep terrain. These avalanches were failing on the crust.

Also on Tuesday, see the public report of human triggered avalanches, size 1.5.

Snowpack Summary

20-30cm of low density storm snow has formed slabs on lee features at ridge top.

There are a series of crusts in the upper snowpack from solar warming and above freezing temperatures in the past 2 weeks.

30-60cm beneath the surface is the Jan 26th drought layer which consists of surface hoar, facets, and a crust. This layer is widespread with largest surface hoar in sheltered areas at treeline and below.

The mid and lower snowpack is generally well settled and strong.

Weather Summary

A high-pressure system over the region will bring a mix of sun and cloud with a few flurries.

Tonight: Cloudy. Alp low -7°C. Wind SW 25km/h. Freezing level (FZL) 900m.

Thur: Clouds/sun/flurries. Snow: Trace. High -5°C. Wind SW 25-45 km/h. FZL 1300m

Fri: Cloudy/flurries. Snow: 5 cm. Alp High -7°C. Wind SW 20-40 km/h. FZL 1100m

Sat: Clouds/sun/flurries. Snow: Trace. Alp High -8°C.Wind W 10-30 km/h. FZL 800m

Terrain and Travel Advice

  • Look for signs of instability: whumphing, hollow sounds, shooting cracks, and recent avalanches.
  • Keep in mind a buried crust offers an excellent bed surface for avalanches.
  • Approach steep and open slopes at and below treeline cautiously, as buried surface hoar may exist.
  • Be aware of the potential for loose avalanches in steep terrain where snow hasn't formed a slab.

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.

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.

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.