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Avalanche Forecast

Archived

Feb 3rd, 2026–Feb 4th, 2026

Alpine
Natural and human triggered avalanches likely.
Treeline
Natural and human triggered avalanches likely.
Below Treeline
Natural avalanches possible, human triggered probable.
Alpine
Natural and human triggered avalanches likely.
Treeline
Natural and human triggered avalanches likely.
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 unlikely, human triggered possible.

Regions

Glacier.

Warm temperatures and sunshine are expected to increase natural and human triggered avalanche activity.

Avoid exposure to sunny slopes especially as things heat up in the afternoon.

Confidence

Moderate

  • We are uncertain about how persistent slabs will react to the forecast weather.

Avalanche Summary

Human triggering continues on the late Jan surface hoar. Over the past few days field teams have been able to trigger several size 1 slab avalanches at and below treeline.

Regionally there have been numerous natural, skier and remotely triggered avalanches also failing on the surface hoar layer.

Snowpack Summary

Forecast significant warming will turn the snow surface heavy and wet increasing slab cohesion. Roughly 30cm beneath the surface is the late Jan weak layer of surface hoar, facets and a crust. This layer is found on all aspects and elevations with largest surface hoar (up to 40mm) in sheltered areas below treeline. The crust is firmer on solar aspects.

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

Weather Summary

No significant precip but a big warm up will raise freezing levels (FZL) to near mountain top on Thursday.

Tonight: Flurries trace new snow. Alpine low -2°C. Moderate SW wind. (FZL) 1700m.

Wed: Cloudy. Low 0°C, high 3°C. Moderate SW wind. FZL 1900m. Weak inversion.

Thurs: Sun & cloud. Low 3°C, high 6°C. Light gusting moderate SW wind. FZL 3000m.

Fri: Sun & cloud. Low -4°C, high 5°C. Moderate SW wind. FZL 3000m.

Terrain and Travel Advice

  • Avoid exposure to overhead hazards when solar radiation is strong.
  • Limit exposure to steep, sun exposed slopes, especially when the solar radiation is strong.

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.